MOUNTING AND
OPERATING INSTRUCTIONS
EB|14tTranslation of the original manualControl and shut-off valve type BR|14t|-|LTR|43
to combine with actuators

June 2023 edition

PFEIFFER Chemie-Armaturenbau GmbH · Hooghe Weg 41 · 47906 Kempen · Germany
Phone: +49 2152 2005-0 · Fax: +49 2152 1580
sales-pfeiffer-de@samsongroup.com · www.pfeiffer-armaturen.com

Note regarding this installation and operating manualThis Installation and Operating Manual (EB) provides guidance
for safe assembly and operation.
The notes and instructions in this EB are binding when handling
PFEIFFER devices. The figures and illustrations in this EB are
examples and must therefore be considered as such.
Ö For safe and correct use, read this EB carefully prior to use
and keep it for later reference.
Ö In the case of questions that go beyond the scope of this EB,
please contact the After Sales Service at PFEIFFER ChemieArmaturenbau GmbH.
Ö This manual only applies to the butterfly valve itself, therespective additional manual applies for the mounted
actuator.

Definition of signal words
DANGER
Hazardous situations that lead to death or serious injuries

WARNING
Situations that can lead to death or serious injuries

NOTE
Property damage and malfunctions

Info
Additional information

Tip
Recommended action

EB|14t_EN
June 2023 edition
Subject to technical changes

Content

Content
1

Safety instructions and safety measures

1-1

1.1

Notes regarding possible severe personnel injury

1-2

1.2

Notes regarding possible personnel injury

1-3

1.3

Notes regarding possible property damage

1-4

1.4

Warning notes on the device

1-4

2Markings on the device

2-1

2.1

Control and shut-off valve type plate

2-1

2.2

Actuator type plate

2-1

2.3

Material markings

2-1

3

Design and principle of operation

3-1

3.1

Variants

3-2

3.2

Additional optional components on the valve

3-2

3.3

Control-related additional equipment

3-3

3.4

Technical data

3-3

4

Shipment and on-site transport

4-1

4.1

Accepting delivery

4-1

4.2

Unpacking the valve

4-1

4.3

Transporting and lifting the valve

4-1

4.3.1

Transporting the valve

4-1

4.3.2

Lifting the valve

4-1

4.4
5

Storing the valve
Installation

4-2
5-1

5.1

Installation conditions

5-1

5.2

Preparing for assembly

5-2

5.3

Assembling the butterfly valve

5-2

5.3.1

Assembling the butterfly valve and actuator

5-2

5.3.2

Installing the valve in the pipe

5-3

5.4

Checking the assembled valve

5-4

5.4.1

Pressure and leak test

5-4

5.4.2

Checking the rotary movement

5-5

5.4.3

Checking the fail-safe position

5-5

6Start-up

6-1

7

Operation

7-1

7.1

Working in automatic mode

7-1

7.2

Working in manual mode

7-1

7.3

Working with the manual gear

7-1

8

Malfunction

8-1

8.1

Detecting and rectifying errors

8-1

8.2

Carrying out emergency measures

8-1

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Content

9Servicing

9-1

9.1

Periodic tests

9-2

9.2

Preparing maintenance work

9-2

9.3

Maintenance work

9-2

9.3.1

Maintenance work on the attachments

9-2

9.3.2

Maintenance work on the actuator

9-2

9.3.3

Maintenance work on the butterfly valve in an installed condition

9-2

9.3.4

Maintenance work on the butterfly valve in a removed condition

9-5

9.4

Assembling and commissioning the valve after maintenance work

9-5

9.5

Design of the sealing system

9-5

10 Decommissioning

10-1

11 Removal

11-1

11.1

Removing the butterfly valve with an assembled actuator from the pipe

11-1

11.2

Disassembling the actuator

11-1

12 Repairs

12-1

12.1

12-1

Sending devices to PFEIFFER

13 Disposal

13-1

14 Certificates

14-1

4

15-1

Annex

15.1

Tightening torques, lubricant and tools

15-1

15.1.1

Tightening torques

15-1

15.1.2

Lubricant15-3

15.1.3

Tools

15-3

15.2

Service

15-3

15.3

Spare parts

15-3

15.3.1

Spare parts for the control and shut-off valve BR 14t - LTR 43

15-4

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Safety instructions and safety measures

1

Safety instructions and safety measures

Intended use
The control and shut-off butterfly valve type BR 14t - LTR 43 is designed for use in combination with an actuator for the regulationof the volume flow, pressure and temperature of fluid, gaseous orvaporous media.
− The butterfly valve and its drive are designed for precisely
defined conditions (e.g. operating pressure, utilised medium,
temperature).
Therefore the operator must make sure that the butterfly valve
is only used when the conditions of use comply with the design criteria defined in the order.
If the operator would like to use the butterfly valve in otherapplications or environments, they must contact PFEIFFER.
− PFEIFFER shall not be held liable for damage that result from
non-compliance with the intended use, as well as for damage
that results from external forces or external influences.

− Protective garments, protective gloves and eye protection
when using hot, cold, aggressive and/or corrosive media− Hearing protection when working in the vicinity of the butterfly valve− Industrial safety helmet− Safety harness, if there is a danger of falling (e.g. if working
unsecured at a height)− Safety shoes, e.g. with protection against static discharge− Request additional protective equipment from the plant operator.
Changes and other modifications
Changes, conversions and other modifications to the valve are
not authorised by PFEIFFER. They are made at your own risk andcan lead to safety risks, for example, that cause the valve to nolonger fulfil the prerequisites required for its use.
Protective devices− Use outside of the technical data and the limits defined by thedesign.

If the butterfly valve switches to a defined fail-safe position when
the pneumatic energy fails, it depends on the utilised butterfly
valve, see the corresponding actuator documentation. In the caseof combinations of a butterfly valve with single-acting actuators,
the butterfly valve automatically switches to a certain fail-safe position in case of a pneumatic energy failure, see Chapter 3. The
fail-safe position corresponds to the effective direction and is indicated on the type plate.

− Use outside of the limited defined by the attachments installedon the butterfly valve.

Warning of residual risks− Limits of use, areas of use and possible uses can be found in
the technical data and on the type plate.
Reasonably foreseeable misuse
The butterfly valve is not suited for the following areas of use:

Furthermore, the following activities are considered unintendeduse:− Use of third-party spare parts− Performance of maintenance and repair work that is not described
Qualification of operating personnel
The butterfly valve may only be installed in observance of therecognised rules of technology, commissioned, serviced and repaired by specialist personnel.
− Specialist personnel in terms of this installation and operating
manual are persons who, on the basis of their vocational education, knowledge and experience and knowledge of therelevant standards, are capable of evaluating the assigned
tasks and identifying possible hazards.

To prevent personal injury or property damage, the operator andoperating personnel must use suitable measures to prevent thehazards that can result from the flow medium and operatingpressure as well as the signal pressure and moving parts.
− Therefore, the operator and operating personnel must observe all the hazard information, warning information andinformation in this installation and operating manual.
− Hazards that result from the specific work conditions at thearea of butterfly valve use must be determined in an individual risk assessment and made avoidable by corresponding instructions from the operator.
Obligation of the operator to exercise diligence
The operator is responsible for proper operation as well as compliance with the safety regulations.

− In the case of valves with an explosion-protection version,
personnel must have been trained or instructed or be authorised to work on explosion-protected devices in plants at riskof explosion.

− The operator is responsible for providing operating personnel
with this installation and operating manual as well as the applicable documents and to provide instructions on proper operation.

Personal protective equipment− Furthermore, the operator must ensure that operating personnel and third parties are not endangered.

PFEIFFER recommends obtaining information regarding the hazards resulting from the medium in use, for example using the
GESTIS substance database.

− The operator is responsible that the limit values for the valve
defined in the technical data are not undershot or exceeded.

Depending on the medium that is used and/or the respective activity, the following protective equipment, among others, may benecessary:

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1-1Safety instructions and safety measures− The start-up and shut-down processes are a part of theoperating process and as such, are not a part of these
installation and operating instructions. PFEIFFER cannot makea statement about these processes, as the operational details(e.g. differential pressures and temperatures) differ
individually and are only known to the operator.
Obligation of operating personnel to exercise diligence− Oxygen
Butterfly valve types BR 14t - LTR 43 are suitable for use inapplications in which the oxygen content of the operating
media is greater than or equal to 35% (Vol.). All parts
coming into contact with the medium are cleaned oil andgrease free and the butterfly valve is protected by means of a
specific protective packaging against dirt and environmental
influences.

Operating personnel must be familiar with this installation andoperating manual and the applicable documents and comply
with the indicated hazard information, warning information andother information. Furthermore, operating personnel must be
familiar with the applicable regulations concerning occupationalsafety and accident prevention and observe them.

All maintenance and repair work must be carried out in an
oil and grease-free environment (clean room).

Applicable standards and directives

For butterfly valves to be used in oxygen applications, whenordering spare parts, it must be specifically indicated thatthey are for “OXYGEN USE” and the corresponding
measures must be observed.

The valve fulfils the requirements of the following European
Directives:− 2014/68/EU Pressure Equipment Directive

The utilised tools as well as personal equipment must comply
with the cleanliness requirements.
The required cleanliness of the butterfly valve must be
ensured through suitable measures prior to reinstallation.

− 2006/42/EC Machinery Directive

Applicable documents− 2014/35/EU Low Voltage Directive− 2014/30/EC Electromagnetic Compatibility

The following general and order-related documents apply in
addition to this installation and operating manual:− 2014/34/EU Equipment and protective systems intended foruse in potentially explosive atmospheres− EB (Installation and operating manual) for the installed
actuator

In the case of valves provided with a CE marking, the Declarationof Conformity provides information about the conformity
assessment procedure that was used, see Chapter 14.

− EB for attachments (positioner, solenoid valve etc.)

Non-electrical actuators do not have their own potential ignition
sources pursuant to the ignition hazard assessment in compliancewith EN ISO 80079-36, even in the case of seldom occurring
operational failures, and therefore are not subject to Directive
2014/34/EU.
Ö For the connection to the equipotential bonding system,
observe Paragraph 6.4 of EN 60079-14, VDE 0165-1.
− NACEAs regards the use or application of materials according to
NACE MR0175 / ISO15156 as well as NACE MR0103(materials in an environment containing H2S) the designationof the standard in the material or test certificates does notindicate suitability for use of the butterfly valve.
This depends additionally on the operating andenvironmental parameters, to which generally only the plant
operator has access. Therefore the suitability for use of suchbutterfly valves must always be checked by the plant
manufacturer/operator.
− SIL
The suitability for use of butterfly valves in (SIL) protective
circuits must be documented in separate agreements.
The below requirements are described in standards (e.g.
VDI 2180, EN 61508, EN 61511) and in the applicable
SAMSON Group Manual (Functional safety for control
valves, rotary plug valves, ball valves and control butterfly
valves; WA 236).

1-2− Data sheet  TB 14t− Safety manual  SH 14t− Manual  WA 236− Copy of the order-related type plate− Order-related dimensional drawing (if agreed)

1.1 Notes regarding possible severe
personnel injury
The following list indicates only generally-applicable information.
The respective chapters can contain hazard information that, due
to context, is provided in addition or is formulated slightly
differently.
DANGER
Risk of bursting due to pressurised devices and components!
Butterfly valves and pipes are pressure equipment that can burst
if handled improperly. Projecting, flying components, fragments
and released pressurised medium can cause injuries or evendeath.
Ö Observe the maximum permissible pressure the butterfly
valves and plant.
Ö Empty the medium from the concerned plant parts and butterfly valve.

EB|14t_EN
June 2023 edition
Subject to technical changes

Safety instructions and safety measures

DANGER
Danger due to falling of suspended loads!
Ö Do not stand under suspended loads.
Ö Secure the transport paths.
Danger due to escaping medium as a result of unsuitableflange seals
Leaks caused by unsuitable flange seals can cause operating
medium to escape. Flange leaks can cause fatal injury to
personnel and damage the environment.
Ö Use suitable flange seals.
Ö Request special dimensions from PFEIFFER.

1.2 Notes regarding possible personnel injury
The following list indicates only generally-applicable warning information. The respective chapters can contain warning information that, due to context, is provided in addition or is formulatedslightly differently.
WARNING
Danger of burning due to hot or cold components and pipes!
Butterfly valves and pipes can become very hot or very cold
during operation and cause burns upon contact.
Ö Let the components and pipes cool down or warm up
Ö Wear protective garments and protective gloves.
Hearing damage and deafness due to a high sound level!
Noise emissions depend on the version of the valve, the plant
equipment as well as the utilised medium. During operation,
medium-related noise emissions may be generated depending on
the plant conditions. In addition, there may be a short-term highsound pressure level when a pneumatic actuator or pneumatic
attachment is suddenly ventilated without noise-reducing
elements. Both can damage hearing.
Ö Wear hearing protection when working in the vicinity of thevalve.
Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the butterfly valve, exhaust air can escape, for example from theactuator.
Ö Install the valve such that the actuator does not ventilate ateye level.
Ö Use suitable silencers and plugs.
Ö Wear eye protection when working in the vicinity of theactuator.
Danger of injury due to incorrect lifting without lifting
equipment!
When lifting the valve without lifting equipment, injuries may occur, especially in the torso area, depending on the weight of thevalve.
Ö Observe the occupational health and safety regulations applicable at the installation site.

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June 2023 edition
Subject to technical changes

WARNING
Overturning of the lifting equipment and damage to the load
lifting equipment by exceeding the lifting capacity!
Ö Only use approved lifting equipment and load lifting equipment whose lifting capacity corresponds at least to the weightof the valve and the packaging if applicable.
Danger of crushing due to moving parts!
The butterfly valve contains moving parts (e.g. shaft and wedgelock-washer) that can lead to crushing if reaching into it.
Ö During operation, do not reach into the bracket between thebutterfly valve and the actuator.
Ö Before working on the valve, interrupt and lock the pneumaticenergy and the control signal.
Ö Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö In the case of a blocked shaft, contact PFEIFFER.
Danger of injury due to preloaded springs!
Valves that are equipped with preloaded actuator springs are under mechanical tension. The marking on the actuator type plate
indicates whether a spring return is available and the fail-safe
position. The marking on the type plates is described in the instruction manuals for the actuators.
Ö Release the compression from the preloaded springs before
working on the actuator, see the corresponding actuator
documentation.
Danger of injury due to moving parts with spring-loaded
actuators
Spring-loaded actuators may only be pressurised when installedin the pipe and not to perform work on the valve outside of thepipe. There is risk of fatal injury if the pneumatic energy
suddenly fails and the valve disc moves automatically to the failsafe position by means of spring force.
For devices that have a spring-loaded actuator with a “fail open”
fail-safe position, the control and shut-off valve must be installedin the open position, for example by removing the pipe.
The sealing surfaces may not be damaged during this operation.
Danger of injury due to residual medium in the butterfly valve!
When working on the butterfly valve, residual medium canescape and, depending on the medium properties, cause injuries(e.g. scalding, chemical burns).
Ö If possible, empty the medium from the concerned plant partsand control and shut-off valve.
Ö Wear protective garments, protective gloves and eye protection.
Danger of injury due to pressurised components and escaping
medium!
Ö Do not loosen pressurised components.
Danger of injury due to static chargeÖ If there is a risk of static charge of the butterfly valve, the operator must ensure, to avoid it, that a suitable ground connection is installed in the provided position.

1-3

Safety instructions and safety measures

WARNINGNOTE

Danger of injury due to incorrect operation, use or installation
caused by illegible information on the butterfly valve!
Over time, imprints or impressions on the valve can soil theadhesives and signs or make them illegible for other reasons sothat dangers are not recognised and necessary operational
messages cannot be followed. Danger of injury can occur.

Damage to the butterfly valve due to unsuitable lubricants!
The functionality of the butterfly valve is ensured only by using acertain lubricant. Unsuitable lubricants can corrode and damage
the surface.
Ö The butterfly valve material requires suitable lubricants, see
Chapter “15.1.2 Lubricants”.

Ö Keep all relevant markings on the device legible at all times.
Ö Damaged, missing or faulty signs or adhesives must be
replaced immediately.

Medium contamination due to unsuitable lubricants andcontaminated tools and components!
Ö If required, for example for oxygen applications, keep thebutterfly valve and utilised tools free from solvents andgreases.
Ö Only use suitable lubricant, see Chapter “15.1.2 Lubricant”

Functional impairment of the butterfly valve due to oil leaking
from the hand pump!
Ö Observe the agreed and documented actuator/valvealignment.
Dangers due to use of the butterfly valve as an end fitting!
During normal operation, in particular with gaseous, hot and/or
hazardous media, spraying medium can cause hazards.
Ö A blind flange must be assembled on the free connecting
pieces or the butterfly valve must be secured against
unauthorised actuation.
Ö If a butterfly valve is used as an end fitting in a pressurised
line is opened, this may only be done with extreme caution
so that the escaping medium does not cause any damage.

1.3 Notes regarding possible property
damage1.4 Warning notes on the device
Warning of moving parts.

Figure|1-1: Example of the warning information

NOTE
Damage to the butterfly valve due to contamination (e.g. solid
particles) in the pipes!
The plant operator is responsible for cleaning the pipes in theplant.
Ö Rinse the pipes prior to commissioning.
Damage to the butterfly valve due to unsuitable medium
properties!
The butterfly valve is designed for a medium with certain
properties.
Ö Only use a medium that corresponds to the design criteria.
Damage to the butterfly valve and leakage due to excessively
high or low tightening torques!
The butterfly valve components must be tightened with specifictorques. Excessively tightened components are subject toincreased wear. Insufficiently tightened components can cause
leakage.
Ö Comply with the specified tightening torques, see Chapter“15.1.1 Tightening torques”

Figure|1-2: Position on the valve

There is a risk of crushing due to the rotation of the shaft,especially during fast rotation movements, when reaching into
the bracket as long as the pneumatic energy is connected to theactuator.

Damage to the butterfly valve due to unsuitable tools!
Unsuitable tools can damage the valve.
Ö Suitable commercially available tools are needed to work on
the butterfly valve, see Chapter “15.1.3 Tools”.

1-4

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Markings on the device

2Markings on the device

2.1 Control and shut-off valve type plate
The butterfly valves are marked with a metal type plate that isfastened to the butterfly valve or, if required, in another suitablelocation of the valve (e.g. extension, bridge).
Conformity with the Pressure Equipment Directive is confirmed
when the type plate bears the CE symbol with the ID number ofthe notified body.
The plate provides the following information:

The current type plates are attached to the final documentationfor each order.
The preferable pressure force direction is marked by a direction
arrow that is integrated in the butterfly valve body or is fastened
as a metal label on the body in a suitable position. Further information can be provided on additional metal labels.

2.2 Actuator type plate
See the corresponding actuator documentation.

2.3 Material markings
The material markings for bodies and wedge-lock-washers arecast into or stamped onto the respective components.

Figure|2-1: Sample type plate

Table|2-1: Meaning of the positions on the type plate
Pos.

Meaning of the marking position

1

Butterfly valve type2

Nominal size (DN or NPS)

3

Nominal pressure level (PN or CL)

4

Order number

5

Permissible pressure (PS)6

Permissible maximum temperature (TSmax.)

7

Maximum permissible differential pressure on the shut-off
trim (P shut-off trim)

8

Permissible minimum temperature (TSmin)

9

Year and month of manufacture (Date)

10

Remarks

11

Test point no. if available (Tag no.)EB|14t_EN
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2-1Markings on the device

2-2

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Design and principle of operation

3

Design and principle of operation

Figure|3-1: Sectional view BR 14t - -LTR 43

Table|3-1: Parts list
Pos.

Designation

Pos.

Designation

1

Body

17

Bracket

2

Disc

18

Coupling

3

Seal ring

39

Packing

4

Seat

A1

Centre console actuator

6

Shaft

A2

Spring cylinder actuator

7

Cover

A3

Pneumatic cylinder actuator

8

Gland

The BR 14t - LTR 43 is a triple-eccentric control and shut-off butterfly valve. It is preferably combined with pneumatic actuators in
the “rack and pinion” or “scotch-yoke” version, or can also be
combined with electric or hydraulic actuators as well as manual
gears.

The butterfly valve body (1) either contains an installed replaceable seat (4) or it is integrated fixed in the body (1a). The respective seal ring (3) that is fastened to a disc (2) is connected withthe actuator via a shaft (6). The actuator itself is fixed to the valve
body by means of a bracket (17).

The designed butterfly valve is available in different series for almost all applications and specifications for the control and shutoff of fluids.

Adjusting the signal pressure that acts on the drive pistons (A3)changes the position of the wedge-lock-washer with respect tothe seat, and therefore the flow rate. The springs (A2) installed inpneumatic actuators move the wedge-lock-washer with the seal
ring into the respective fail-safe position if the pneumatic energy
fails. The seal between the body and the shaft is guaranteed by
the packing rings (39) pressed by a stuffing box (8).

The series differ in the structure of the sealing system. The following paragraph provides an example in order to explain the functionality of the valve. In the case of a special design or in combination with a different auxiliary energy, the functionality may differ slightly.

EB|14t_EN
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3-1Design and principle of operation

The butterfly valve reaches its maximum tightness when it is operated according to the preferable pressure force direction (FTC)
when installed in the pipe system. The preferable pressure force
direction is indicated by an arrow on the side of the body.

Various variants and special designs, such as a heating jacket
body, sealing gas connections, exterior bearing points, oxygen
versions, TA-Luft seals, etc. are available upon request.

Fail-safe positions

3.2 Additional optional components on thevalve

If the butterfly valve switches to a defined fail-safe position when
the pneumatic energy fails, it depends on the utilised butterfly
valve, see the corresponding actuator documentation.
The position of the wedge-lock-washer is indicated by two red
dots just above the stuffing box. When the butterfly valve isclosed, the imaginary connection axis is the red marks at a rightangle to the flow direction. When the actuator shaft rotates clockwise, the butterfly valve closes (clockwise to close).

Body extension
For operating or design temperatures below -60 °C (-76 °F) or
above 350 °C (662 °F), the valve are equipped standard with abody extension (insulation part), see Chapter “5.2 Preparing for
assembly”.
Grip protection
In the case of conditions of use that require a high level of safety(e. g. if the valve is freely accessible to untrained specialist personnel), grip protection must be provided to exclude the risk ofcrushing due to moving parts (actuator shaft). The decision
whether to use grip protection is the responsibility of the plant
operator and depends on the risk potential of the individual
plants and their respective conditions.
Noise reduction
Trims with flow dividers can be used to reduce noise emissions.
Fixed assembly plates on the actuator for control accessories.
For optimal accessibility and maintenance, the actuator accessories can be fit on a central plate as the operator level, dependingon the application.

Figure|3-2: Position indicator

Weather protection equipment

Valve closed by springs (FS)To protect the valve function against the risk of pitting due to theentry of foreign material (e.g. sand) between the stuffing box
and the shaft, additional cover plates can be attached to thebracket upon customer request.

Upon reduction of the signal pressure or failure of the pneumaticenergy, the springs move the actuator shaft clockwise and close
the butterfly valve.

To protect the actuator accessory (e.g. solenoid valve, positioner)
against the sun, rain and other environmental influences, additional protective devices can be attached upon customer request.

The butterfly valve opens when the signal pressure increases, acting against the force of the springs.

Fire-resistant insulation

Valve opened by springs (FÖ)
Upon reduction of the signal pressure or failure of the pneumaticenergy, the springs move the actuator shaft counterclockwise andopen the butterfly valve.
The butterfly valve closes when the signal pressure increases, acting against the force of the springs.

3.1 Variants

Upon customer request, the fire resistance of the valve with respect to the installation environment can be increased by meansof individually customised fire protection equipment.
WARNING
Danger of burns due to heated components!
Additional optional components can become very hot during
operation and cause burns upon contact.
Ö Let components and pipes cool down.
Ö Wear protective garments and protective gloves.

For very high or very low temperatures, the butterfly valve can beprovided with a body extension and, for example, insulated witha cold-box cover.

3-2

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Design and principle of operation

3.3 Control-related additional equipment
For valves such as rotary valves, the following accessories areavailable, for example, either individually or in combinations:− Positioner− Limit switch− Solenoid valves− Filter - reducing station− Jacket heater
Other additional equipment is possible according to
specifications on request.

3.4 Technical data
The type plates of the butterfly valve and actuator provide
information about the butterfly valve version, see Chapter 2.1
and the actuator documentation.
Conformity
The butterfly valve type LTR 43 complies with the essential
international standards, and is in particular both CE and EAC
compliant.
Temperature range
Depending on the version, the butterfly valve is designed for atemperature range from –60 to +400 °C. The temperature range
can be expanded using adapted material as well as an
insulation and body extension.
Leakage class
The following leakage classes are available upon agreement andaccording to customer specifications:− DIN EN 12266 Part 1 - Testing of metallic valves / ISO 5208
[Leakage class A – G)
− ANSI FCI 70-2 Control Valve Seat Leakage /DIN EN 60534-4 (Leakage class I-VI)− Others upon agreement

Noise emissions
PFEIFFER cannot make a general statement about noise emission.
Noise emissions depend on the version of the butterfly valve, theplant equipment as well as the utilised medium.
Dimensions and weights
The dimensions and weights can be found on the technical data
sheet  TB 14t or on the order-related dimensions sheet of thevalve.

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Subject to technical changes

3-3Design and principle of operation

3-4

EB|14t_EN
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Shipment and on-site transport

4

Shipment and on-site transport

The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.

4.1 Accepting delivery
Perform the following steps after receiving the goods:
1. Check the scope of supply. Compare the data on the butterfly
valve type plate with the delivery note. For details about thetype plate, see Chapter “2 Markings on the device”.
2. Check the supply for transport damage. Report transport
damage through the PFEIFFER office and the transport company, see the delivery note.
3. Select suitable lifting equipment and load handling devices
according to the weight and dimensions of the valves to betransported and lifted, see the transport documentation andChapter “3.4 Technical data”.

4.2 Unpacking the valve
Observe the following procedures:

WARNING
Danger of injury due to incorrect lifting without lifting equipment!
When lifting the valve without lifting equipment, injuries may occur, especially in the torso area, depending on the weight of thevalve.
Ö Observe the occupational health and safety regulations applicable at the installation site.

NOTE
Damage to the valve due to improper fastening of the sling!
The lifting eye/eyebolts on the actuators are used only for actuator assembling and disassembling as well as for lifting the actuator without the butterfly valve. These fastening points are not intended for lifting the complete valve.
Ö When lifting the valve, make sure that the entire load is carried by the sling that is fastened to the butterfly valve body.
Ö Do not fasten the load-bearing sling to the actuator, handwheel or other components.
Ö Observe the conditions for lifting, see Chapter 4.3.2.
Ö Do not use the control air lines, accessories or other components with safety functions for suspension or damage them.

Ö Unpack the valve directly before lifting for installation into thepipe.
Ö Check the valve for damage.
Ö Use suitable transport equipment for on-site transport.
Ö Only remove the protective caps on the butterfly valve inlet
and outlet directly before installation into the pipe. They protect the butterfly valve against damage by preventing the entrance of foreign material.
Ö Dispose of the packaging according to local regulations.

4.3.1

Transporting the valve

The transport notes from the packaging (e.g. wooden box) mustbe followed. The valve can be transported using lifting equipment
such as a crane or a forklift.
Ö Comply with the transport conditions.
Transport conditions
Ö Protect the valve against external influences, such as impacts.

4.3 Transporting and lifting the valve
DANGER
Danger due to falling of suspended loads!
Ö Do not stand under suspended loads.
Ö Secure the transport paths

Ö Do not damage the corrosion protection (paint, surface coating). Report any damage immediately and remedy it after
consultation.
Ö Protect the pipes and any attachments from damage.
Ö Protect the valve against moisture and dirt.
Ö When the valve is in the standard version, the permissible
transport temperature is from –20 to +65 °C.

WARNING
Overturning of the lifting equipment and damage to the load
lifting equipment by exceeding the lifting capacity!
Ö Only use approved lifting equipment and load lifting equipment whose lifting capacity corresponds at least to the weightof the valve and the packaging if applicable.
Danger of injury due to tipping of the valve!
Ö Observe the centre of gravity of the valve.
Ö Secure the valve against tipping and twisting.

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June 2023 edition
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4.3.2

Lifting the valve

When installing the valve in the pipe, suitable lifting equipment
should be used, such as a crane or a forklift. Use suitable tested
slings and suitable fastening to make sure that the surfaces andcontact surfaces are not damaged, and that no other damage
occurs to the valve (e.g. actuator accessories, piping, sealing elements).

4-1

Shipment and on-site transport

Conditions for liftingÖ Use a hook with a safety clamp as the suspension element,
see Figure 4-1, so that the sling cannot slip off the hookduring lifting and transport.
Ö Secure the sling against shifting and slipping off.
Ö Fasten the sling such that it can be removed again after
installation in the pipe.
Ö Avoid swinging and tipping the valve. Pay attention to thecentre of gravity!
Ö In the case of interruptions in work, do not leave the lifting
equipment suspended in the air for a long period of time.
WARNING
Danger due to incorrect lifting and transport!
The lifting points for the lifting slings shown on the schematic
drawing serve as examples for most valve variants. On site theconditions for lifting and transporting the butterfly valve canchange however.
Ö The operator makes sure that the butterfly valve is lifted andtransported safely.

Figure|4-2: Sample lifting points for valves

Version: Horizontal alignment
1. Use suitable tested slings and suitable fastening to lift thevalve using suitable lifting equipment.
2. Lift the valve carefully. Check if the load lifting equipment
holds.
3. Move the valve at a constant speed to the installation site.
4. Install the valve in the pipe, see chapter “5 Installation”.
5. Remove the lifting slings after successful installation.
Info
Upon request, PFEIFFER can provide comprehensive transportand lifting instructions. Contact PFEIFFER.

4.4 Storing the valve
NOTE
Figure|4-1: Sample lifting points for butterfly valves

Damage to the valve due to improper storage!
Ö Comply with the storage conditions.
Ö Avoid long storage periods.
Ö In the case of deviating storage conditions and long storage,
contact PFEIFFER.

Info
PFEIFFER recommends checking the valve and the storage conditions regularly during a longer storage period.

Storage conditions
Ö Protect the valve in its original packaging in a covered
location in a clean and dry environment against external
influences, such as impacts.

4-2

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Shipment and on-site transport

Ö Secure the valve in the storage position against slipping or
tipping over.
Ö Do not damage the corrosion protection (paint, surface
coating). Remedy any damage immediately.
Ö Protect the valve against moisture and dirt and store at a
relative humidity of <75 %. Prevent condensation in damp
rooms. Use a desiccant or heater.
Ö Make sure that the surrounding area is free of acids or othercorrosive and aggressive media.
Ö The permissible storage temperature for valves is from –20 to+65 °C.
Ö No components may be placed on the valve.
Special storage conditions for elastomer
Example of elastomer: Actuator seals
Ö To maintain the shape and avoid the formation of cracks, donot suspend or bend elastomers.
Ö PFEIFFER recommends a storage temperature of 15 °C forelastomers.
Ö Store elastomers separately from lubricants, chemicals,
solutions and fuels.

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June 2023 edition
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4-3Shipment and on-site transport

4-4

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June 2023 edition
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Installation

5

Installation

The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.
Observe chapter 4.3 for transport to the installation site.

The entry and run-out lengths depend on various variables andprocess conditions and are provided as a recommendation, see
Table 5-1.
If the lengths recommended are significantly undershot, contact
PFEIFFER.
The guidelines applicable on site apply for the installation of thebutterfly valve in the pipe.

5.1 Installation conditions
Operator level
The operator level for the valve is the front view on all operating
elements of the valve from the perspective of operating personnel.
The plant operator must make sure that operating personnel can
carry out all work after the butterfly valve is installed safely andcan access it easily from the operator level.

Install the butterfly valve so there is low vibration and no
mechanical tension, use a support if necessary. Observe thesections “Installation orientation” and “Support and mounting” inthis chapter.
Install the valve so there is enough space to replace the actuatorand butterfly valve as well as to perform maintenance and repair
work.
Installation position
The butterfly valves of the BR 14t - LTR 43 are designed such that
it is possible to position the actuator/butterfly valve horizontallyor vertically, whereby the standard version is vertical. The agreed
and documented installation location must be observed. If it must
be adjusted contact PFEIFFER.

Pipe routing

Q Flowa Entry lengthb Run-out length

Figure|5-1:

WARNING
Functional impairment of the valve due to oil leaking from thehand pump in case of an incorrect installation position!
Ö Observe the agreed and documented actuator and butterfly
valve alignment.

Entry and run-out lengths

Support and mounting
Table|5-1: Entry and run-out lengths
Mediumstate
GaseousInstallation
length a

Run-out
length b

Ma ≤ 0.324

0.3 ≤ Ma ≤ 0.7

2

10

Ma ≤ 0.3 1)

24

0.3 ≤ Ma ≤ 0.7

Vaporous

Fluid

Butterfly valve conditions

2

10

Wet steam(Condensation percentage >5%)

2

20

1)

Cavitation free / w < 10 m/s

2

4Sound cavitation / w ≤ 3 m/s

2

4Sound cavitation / 3 < w < 5 m/s

2

10

Critical cavitation / w ≤ 3 m/s

2

10

Critical cavitation / 3 < w < 5 m/s

2

20

Flashing-

2

20

Multi-phase

-

10

20

1)

The plant manufacturer is responsible for the selection andimplementation of a suitable support or mounting for the installedvalve as well as the pipe.
Attachments
When connecting the attachments, make sure that they can be
operated from the operator level safely and with easy access.
Venting
Vents are screwed into the exhaust air connections of pneumaticand electropneumatic devices to ensure that the generated
exhaust air can be released to the outside (protection against
overpressure in the device). Furthermore, vents allow the intake
of air (protection against underpressure in the device).
Ö Ventilation must be oriented such that operating personnel is
not endangered. The operator must evaluate the hazard due
to noise and prevent it using suitable measures.

no wet steam

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June 2023 edition
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5-1Installation

5.2 Preparing for assembly

Ensure the following conditions prior to assembly:− The valve is clean.

DANGER
Danger due to escaping medium resulting from unsuitableflange seals!
Leaks caused by unsuitable flange seals can cause operating medium to escape. Flange leaks can cause fatal injury to personnel
and damage the environment.
Ö The butterfly valves of BR 14t - LTR43 have special dimensions, if applicable. It is indicated in the order confirmationor the dimension sheet if special dimensions are required.
Ö Special dimensions can be requested from PFEIFFER.
Danger of injury due to moving parts with spring-loaded
actuators!
Spring-loaded actuators may only be pressurised when installedin the pipe and not to perform work on the butterfly valve outsideof the pipe. There is risk of fatal injury if the pneumatic energy
suddenly fails and the valve disc moves automatically to the failsafe position by means of spring force.
Ö Install butterfly valves that have a spring-loaded actuator withthe “fail open” fail-safe position in the open position. Remove
the pipe if necessary.
Ö Do not damage the sealing surface.

NOTE
Employees or third parties may not be endangered.
Any applicable legal regulations of the country of destinationmust also be observed.
Other seals.
For other seals, such as spiral or grooved gaskets, the standardised dimensions may not be suitable.
Ö Contact PFEIFFER for suitable special dimensions.
Ö Upon request, PFEIFFER can supply these seals.
Damage to the butterfly valve due to incorrect insulation!
Insulate butterfly valves with a body extension with medium temperatures below -60 °C or above 350 °C only up to the maximum permissible height.
Ö In the case of high temperature applications, insulate only thelowest third of the insulation part.
Ö In the case of low temperature applications, insulate only thelowest two thirds of the entire length.
Ö In the case of cold-box applications, insulate the cold-box
cover up to the lower edge. If the insulation part is insulated
at an impermissibly high level, it can lose its function!

Info
The plant operator is responsible for cleaning the pipes in theplant.

5-2− The valve and all attachments inclusive of the pipes are notdamaged.
− The data on the type plate (type, nominal size, material,nominal pressure and temperature range) matches the plantconditions and conditions of use. For details about the typeplate, see Chapter “2 Markings on the device”.
− Additional optional components are installed or prepared tothe point as required prior to the assembly of the valve, see
Chapter “3.2 Additional optional components on the valve”.
− Sufficient installation space is available.
− The pipe connections must be aligned plane-parallel, flush
and tension-free.
− Measures for avoiding contact with hazardous media were
found.
− All welding requirements have been met.
Perform the following preparation steps for assembly:− Get the material and tools ready that are required for
assembly.
− If the butterfly valve and actuator are already assembled together, check the screw connections for the correct tightening
torques, see Chapter “15.1.1 Tightening torques”. Components can loosen up during transport.

5.3 Assembling the butterfly valve
The tasks are listed below that are necessary for assembly andprior to the commissioning of the butterfly valve.
Make sure before assembly that all necessary preparations are
made, see Chapter 5.2.

5.3.1

Assembling the butterfly valve andactuator

The PFEIFFER valves are delivered in working order. In individual
cases, the actuator and butterfly valve are delivered separately
and must be assembled.
The tasks are listed below that are necessary for assembly andprior to the commissioning of the valve.
DANGER
Danger and damage due to retrofitting an actuator unit!
The subsequent fitting of an actuator unit can pose a danger tothe user and cause damage to the pipe system.
Ö The torque, rotation direction, actuation angle and adjustment of the “OPEN” and “CLOSED” end stops must be
adapted to the butterfly valve.

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Installation

WARNING
Danger and damage due to use of an electrical actuator!
Ö It must be ensured that the valve in the “CLOSED” and“OPEN” position is turned off by the limit switch signal.
Ö If shut-off takes place in an intermediate position due to thesignal of the torque switch, this signal should be used in addition for an error message. The fault must be remedied assoon as possible, see Chapter “8 Malfunction”.
Ö For further instructions, see the electrical actuator documentation.
Danger of injury due to preloaded springs!
Butterfly valves that are equipped with preloaded actuator
springs are under mechanical tension. The marking on the actuator type plate indicates whether a spring return is available andthe fail-safe position. The marking on the type plates is describedin the instruction manuals for the actuators.
Ö Release the compression from the preloaded springs before
working on the actuator, see the corresponding actuator documentation.
Danger and damage due to high external loads on an actuator
unit!
Actuators are not “stepladders”.
Ö Loads may not be applied to the actuators as they can damage or destroy the butterfly valve.
Danger and damage due to heavy actuator units!
Actuators that are heavier than the weight of the butterfly valve
can pose a danger to the user and cause damage to the pipe
system.
Ö These actuators must be supported if they generate a bending stress on the butterfly valve due to their size and/or installation situation.

NOTE
Damage due to incorrectly installed end stops.
The actuator end stops must be adjusted such that the seat is notoverrun, see the corresponding actuator documentation.
Damage to the butterfly valve due to the incorrect actuator
assembly!
Triple eccentric butterfly valves must always be closed clockwise!
Ö Observe the turning direction when assembling an actuator.
Damage to the butterfly valve due to the incorrect setting of theend stops!
The actuating device is adjusted to the operating data specified
in the order.
Any change to the “OPEN” and “CLOSED” end stops preset by
PFEIFFER is only permissible upon consultation and approval.

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5.3.2

Installing the valve in the pipe

NOTE
Premature wear and leakage due to insufficient support or
mounting!
Ö Use sufficient supports or mountings in suitable points.

Ö Fasten the valve with suitable lifting equipment and pay attention to the centre of gravity of the valve, see chapter“4.3.2 Lifting the valve”. Data regarding the centre of gravity
can be requested from PFEIFFER.
NOTE
Swivel and/or tipping danger
When using manual auxiliary actuations, observe the corresponding documentation to bring the valve into the closed position.

Ö Remove the protective elements on the butterfly valve prior to
installation.
Ö Check the closed position. Make sure that no parts of thewedge-lock-washer protrude beyond the plane-parallel sealing surfaces.
Ö In the case of noise-reducing versions of the wedge-lockwasher that protrudes past the sealing surfaces, the order-related dimension sheet must be observed.
To ensure that there is a collision-free installation, suitablemeasures must be taken.
Ö Lift the valve at the installation site using suitable lifting equipment, see Chapter 4.3.2. When doing so observe the flow
direction of the butterfly valve. It is marked with direction arrows on the side of the valve body.
Ö Install the butterfly valve tension-free in the pipe after previously installing supports or mountings, if necessary. It must
be ensured that suitable flange seals are used, see chapter
5.2. Use bolts (no screws) and nuts to assemble the flangewith blind threads on the bodies. The bolts must be screwed
in to the thread base.
WARNING
Danger of injury due to static chargeÖ If there is a risk of static charge of the butterfly valve, the operator must ensure, to avoid it, that a suitable ground connection is installed in the provided position.

5-3

Installation

WARNING
Danger of crushing due to moving parts!
The valve contains moving parts (e.g. shaft and wedge-lockwasher) that can lead to crushing if reaching into it.
Ö During operation, do not reach into the bracket between thebutterfly valve and the actuator.
Ö Before working on the valve, interrupt and lock the pneumaticenergy and the control signal.
Ö Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö In the case of a blocked shaft, contact Pfeiffer.

Figure|5-2:

Grounding thread position

5.4 Checking the assembled valve
DANGER
Risk of bursting due to pressurised devices and components!
Butterfly valves and pipes are pressure equipment that can burst
if handled improperly. Projecting, flying components, fragments
and released pressurised medium can cause injuries or evendeath.
Before working on the valve:Ö Depressurise the concerned plant parts and butterfly valves,
inclusive of the actuator. Also discharge the residual energy.
Ö Empty the medium from the concerned plant parts and butterfly valve.

WARNING
Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the butterfly valve, exhaust air can escape, for example from theactuator.
Ö Wear eye protection when working near the actuator.
Hearing damage and deafness due to a high sound level!
During operation, medium-related noise emissions may be generated depending on the plant conditions. In addition, there may
be a short-term high sound pressure level when a pneumatic actuator or pneumatic attachment is suddenly ventilated without
noise-reducing elements. Both can damage hearing.
Ö Wear hearing protection when working in the vicinity of thevalve.
Danger of injury due to pressurised components and escaping
medium!
Ö Do not loosen pressurised components.

5-4Danger of injury due to preloaded springs!
Butterfly valves that are equipped with preloaded actuator
springs are under mechanical tension. The marking on the actuator type plate indicates whether a spring return is available andthe fail-safe position. The marking on the type plates is describedin the instruction manuals for the actuators.
Ö Release spring force before working on the actuator, see thecorresponding actuator documentation.

NOTE
If the actuator is delivered separately from the butterfly valve or if
it must be disassembled, actuator assembly may be carried out
only by personnel trained by PFEIFFER.

Perform the following tests to test the function of the valve prior tocommissioning or recommissioning:

5.4.1

Pressure and leak test

NOTE
Damage to the butterfly valve due to a sudden pressure increase
and resulting high flow speed must be avoided!
Ö Observe the data on the type plate.
Damage to the butterfly valve due to excessively high or low
tightening torques!
The butterfly valve components must be tightened with specifictorques, see Chapter “15.1.1 Tightening torques”.
Excessively tightened components are subject to increased wear.
Insufficiently tightened components can cause leakage.
Ö Observe the specified tightening torques.

The plant operator is responsible for performing the leak test andselecting the test procedure. The leak test must comply with thenational and international standards and regulations applicableat the installation site!
During the pressure test and leak test from the outside, the butterfly valve disc must be brought into the open position.

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Installation

Tip
Upon request, the After Sales Service can provide you with support for the planning and implementation of a leak test specific toyour plant. Contact PFEIFFER.

Tightening the flangeÖ Tighten the flange screws with the specified torque.
Ö If the seal is not sufficient, the flanges and flange seals must
be checked for damage and replaced if necessary.
Optional body extension (15) (insulation part)

The tightness of the packing, bonnet, flange and optional bodyextension must be checked.

Ö Tighten the nuts (63) with the specified tightening torque, see
Chapter “15.1.1 Tightening torques”.
Ö In the case of insufficient tightness, contact PFEIFFER.

In the case of impermissible leakage, proceed as follows:
Tighten the packing (8)Ö Tighten the stuffing box nuts (56) alternately and evenly using
the specified torques, see Chapter “15.1.1 Tightening torques”. Avoid tilting

5.4.2

Checking the rotary movement

The rotary movement of the actuator shaft must be even (smooth).

5.4.3

Checking the fail-safe position

It must be checked if the valve moves to the fail-safe position indicated on the actuator type plate, see Chapter “3 Design andprinciple of operation”.

Figure|5-3:

Correct tightening of the packing

Ö Open and close the valve completely multiple times, if possible.
Ö Repeat steps 1 and 2 until the required tightness is achieved.
NOTE
Functional impairment of the butterfly valve due to increased
friction resulting from an excessively tightened stuffing box!
Ö Make sure that the actuator shaft is able to move smoothly after tightening the stuffing box.
Ö If the adjustable packing is not correctly sealed, contact
PFEIFFER.

Tighten the bonnet (7)Ö Tighten the bonnet screws (53) with the specified tightening
torque, see Chapter “15.1.1 Tightening torques”.
Ö In the case of insufficient tightness, contact PFEIFFER.

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5-5Installation

5-6

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Start-up

6

Start-up

The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.
WARNING
Danger of burning due to hot or cold components and pipe!
The valve and pipe can become very hot or very cold during operation and cause burns upon contact.
Ö Let the components and pipes cool down or warm up.
Ö Wear protective garments and protective gloves.
Danger of injury due to pressurised components and escaping
medium!
Ö Pressurised components may not be loosened.
Hearing damage and deafness due to a high sound level!
During operation, medium-related noise emissions may begenerated depending on the plant conditions. In addition, there
may be a short-term high sound pressure level when a pneumatic
actuator or pneumatic attachment is suddenly ventilated without
noise-reducing elements. Both can damage hearing.
Ö Wear hearing protection when working in the vicinity of thevalve.
Danger of crushing due to moving parts
The valve contains moving parts (e.g. shaft and wedge-lockwasher) that can lead to crushing if reaching into it.
Ö During operation, do not reach into the bracket between thebutterfly valve and the actuator.
Ö Before working on the valve, interrupt and lock the pneumaticenergy and the control signal.
Ö Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö In the case of a blocked shaft, contact PFEIFFER.

Ö the limit values indicated on the type plate, such as the max.
permissible pressure PS of the valve, minimum/maximum
temperature TS, see Chapter “2 Markings on the device”, arenot exceeded due to the operating conditions (P < PS, TS
min. < T < TS max.).
Furthermore, the pressure-temperature assignment must be
observed according to EN 12516-1, EN 1092-1 and
ASME B16.34.
The valve must be operated by expert and instructed personnel.
Furthermore, the operator must ensure that employees and third
parties are not endangered. The nationally applicableregulations of the country of destination must be observed when
operating the valve.
Changes to the factory settings for the actuator (e.g. end stops)
and accessories (e.g. filter regulator, booster, controller etc.) are
not permissible and may be made on an individual basis only
upon approval of the manufacturer by qualified and expert
personnel.
The system must be started-up and shut-down so that thetemperature increase/decrease or sudden pressure increases do
not result in impermissible increases in voltage.
During start-up operation, the valve must be continuously
observed and checked for possible leakage.
During normal operation, the valve may only be operated if all
valve components are functional and not deactivated or changed
with regard to its intended effect.
Operation of the valve in a continuous throttle position (noopening angle) can lead to increased wear of the sealing
elements (seat/seal ring) and require more frequent maintenanceintervals.

Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the butterfly valve, exhaust air can escape, for example from theactuator.
Ö Wear eye protection when working in the vicinity of theactuator.

Commissioning/recommissioning
The valve may only be commissioned after the operator has
ensured thatÖ the valve has been inspected to ensure its proper condition in
relation to installation and safe function, see Chapter “5Installation”.
Ö the parts in contact with the media are suitable for theintended use, see chapter “1 Safety instructions and safetymeasures“.
Ö The actuators and accessories (if installed) are connectedaccording to manufacturer instructions and the valvefunctions correctly according to the control commands.
Ö for electrical components, the IP and Ex markings/data arecorrect.

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6-1

Start-up

6-2

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Operation

7

Operation

As soon as the commissioning/recommissioning work iscomplete without any defects, see Chapter “6 Start-up”, the valve
is ready for operation.

After commissioning and reaching the operating temperature, it
may be necessary to retighten the screw connections on the bodyparts with the corresponding tightening torques, see Chapter“15.1.1 Tightening torques”.
If an valve leaks, see chapter “8 Malfunction”.

DANGER
Danger due to jerky operation of the valve!
The failure to observe these warnings can cause extreme danger
for persons or damage to the pipe system.
Ö Do not open and close the butterfly valve suddenly to prevent
pressure surges and/or a temperature shock in the pipe
system.

WARNING
Danger of burning due to hot or cold components and pipe!
Butterfly valves and pipes can become very hot or very cold
during operation and cause burns upon contact.
Ö Let the components and pipes cool down or warm up.
Ö Wear protective garments and protective gloves.
Danger of injury due to pressurised components and escaping
medium!
Ö Pressurised components may not be loosened.
Hearing damage and deafness due to a high sound level!
During operation, medium-related noise emissions may begenerated depending on the plant conditions. In addition, there
may be a short-term high sound pressure level when a pneumatic
actuator or pneumatic attachment is suddenly ventilated without
noise-reducing elements. Both can damage hearing.
Ö Wear hearing protection when working in the vicinity of theactuator.

7.1 Working in automatic mode
For actuators with additional manual adjustment, bring them intoa neutral position recommended by the manufacturer. Further
information can be found in the respective component
instructions.
Butterfly valves that were delivered from the factory with anactuator are precisely adjusted. The user is responsible for any
changes they make.

7.2 Working in manual mode
For actuators with manual adjustment, the butterfly valve can be
opened and closed manually if the pneumatic energy fails.
Further information can be found in the respective component
instructions.

7.3 Working with the manual gear
For butterfly valves with manual adjustment, they can be opened
and closed manually. Further information can be found in therespective component instructions.

Danger of crushing due to moving parts
The valve contains moving parts (e.g. shaft and wedge-lockwasher) that can lead to crushing if reaching into it.
Ö During operation, do not reach into the bracket between thebutterfly valve and the actuator.
Ö Before working on the valve, interrupt and lock the pneumaticenergy and the control signal.
Ö Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö In the case of a blocked shaft, contact PFEIFFER.
Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the butterfly valve, exhaust air can escape, for example from theactuator.
Ö Wear eye protection when working in the vicinity of theactuator.

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7-1Operation

7-2

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Malfunction

8

Malfunction

When rectifying the faults, chapter “1 Safety instructions and safety measures” must be observed.

8.1 Detecting and rectifying errors
Type of fault
Leaks in the passage

Leaks in the flange seal

Leaks in the shaft sealing(packing)

Leaks in the body cover

Difficulty of actuator shaft
movement

Actuator functionality limited

Cause

MeasureNote

Wedge-lock-washer not in the Check the end stops on the actuator and/ Note 1: Check the position marking on
closed position
or gear (sealing paint undamaged)
the shaft, see Chapter 3.
Contact PFEIFFER for further measures
Note 2: Check the position display on theactuator
Note 3: Rinse the butterfly valve andpipes
Seat/seal ring damaged

Replace the seat/seal ringContact PFEIFFER with regard to a repair
kit

Seal damaged

Replace the seal

Use a suitable seal, see Chapter 4.4

Insufficient surface pressure
on the seal

Tighten the flange screws

Observe the maximum permissible
tightening torques

Flange sealing surface
damagedRework the flange sealing surface

Coordinate rework with PFEIFFER

Packing worn

Tighten the stuffing box nuts

Observe the max. permissible tightening
torques, see Chapter 15.2

Packing insufficiently
preloaded

Tighten the stuffing box nuts

Observe the max. permissible tightening
torques, see Chapter 15.2

Packing defective

Replace the packing

See chapter 9.3.3

Seal insufficiently preloaded

Retighten the bonnet screws.

Observe the max. permissible tightening
torques, see Chapter 15.2

Seal defective

Replace the seal.

See chapter 9.3.3

Packing improperly preloaded Release and and realign the gland
Insufficient tightening torque

Check the pneumatic energy.

Actuator insufficiently
supported

Use construction measures to support theweight of the actuator

Dirt in the bearing area

Contact PFEIFFER

Actuator or control faulty

Contact PFEIFFER.

Depressurise the butterfly valve, see
Chapter 10

In the case of faults that are not listed in the table, contact the After Sales Service at PFEIFFER.

8.2 Carrying out emergency measures
The system operator is responsible for emergency measures. In
the case of an valve fault, observe the measures in Chapter 8.1.

Recommissioning after faults
See chapter 6

In case of an valve fault:
Ö Close off the pipe upstream and downstream of the actuatorso that no medium flows through the valve.
Ö Troubleshoot the error, see chapter 8.1.
Ö Rectify the fault that can be fixed as indicated in the instructions provided in this installation and operating manual.
Contact PFEIFFER for additional errors.

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8-1Malfunction

8-2

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Servicing

9Servicing

The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.
The following documents are required in addition for the
maintenance of the valve:− Instructions for actuators and attachments

DANGER
Risk of bursting due to pressurised devices and components!
Butterfly valves and pipes are pressure equipment that can burst
if handled improperly. Projecting, flying components, fragments
and released pressurised medium can cause injuries or evendeath.
Before working on the valve:Ö Depressurise the concerned plant parts and actuators. Also
discharge the residual energy.
Ö Empty the medium from the concerned plant parts andbutterfly valve.

WARNING
Danger of burning due to hot or cold components and pipe!
The valve and pipe can become very hot or very cold during
operation and cause burns upon contact.
Ö Let the components and pipes cool down or warm up.
Ö Wear protective garments and protective gloves.
Danger of injury due to pressurised components and escaping
medium!
Ö Pressurised components may not be loosened.
Hearing damage and deafness due to a high sound level!
During operation, medium-related noise emissions may begenerated depending on the plant conditions. In addition, there
may be a short-term high sound pressure level when a pneumatic
actuator or pneumatic attachment is suddenly ventilated without
noise-reducing elements. Both can damage hearing.
Ö Wear hearing protection when working in the vicinity of theactuator.
Danger of crushing due to moving parts
The valve contains moving parts (e.g. shaft and disc) that canlead to crushing if reaching into it.
Ö During operation, do not reach into the bracket between thebutterfly valve and the actuator.
Ö Before working on the valve, interrupt and lock the pneumaticenergy and the control signal.
Ö Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö In the case of a blocked shaft, contact PFEIFFER.

WARNING
Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the butterfly valve, exhaust air can escape, for example from theactuator.
Ö Wear eye protection when working in the vicinity of theactuator.
Danger of injury due to preloaded springs!
Valves that are equipped with preloaded actuator springs areunder mechanical tension. The marking on the actuator typeplate indicates whether spring return is available and the failsafe position. The marking on the type plates is described in the
instruction manuals for the actuators.
Ö Release the compression from the preloaded springs before
working on the actuator, see the corresponding actuator
documentation.
Danger of injury due to residual medium in the butterfly valve!
When working on the butterfly valve, residual medium canescape and, depending on the medium properties, cause injuries(e.g. scalding, chemical burns).
Ö If possible, empty the medium from the concerned plant parts
and butterfly valve.
Ö Wear protective garments, protective gloves and eye
protection.
Damage to the butterfly valve due to unsuitable lubricants!
The functionality of the butterfly valve is ensured only by using acertain lubricant. Unsuitable lubricants can corrode and damage
the surface.
Ö Only use lubricants recommended by PFEIFFER, see Chapter“15.1.2 Lubricants”.

NOTE
Damage to the butterfly valve due to the subsequent fitting of
the actuator!
Ö If the actuator is delivered separately from the butterfly valve
or if it must be disassembled, observe the corresponding
assembly instructions.
Damage to the butterfly valve due to excessively high or low
tightening torques!
The butterfly valve components must be tightened with specifictorques, see Chapter “15.1.1 Tightening torques”. Excessively
tightened components are subject to increased wear. Insufficiently
tightened components can cause leakage.
Ö Observe the tightening torques.

Info
The valve was checked by PFEIFFER prior to delivery.

− Certain test results certified by PFEIFFER are no longer valid
when performing maintenance work on the valve. This
includes the test for seat leakage and the leak test (outertightness).

EB|14t_EN
June 2023 edition
Subject to technical changes

9-1Servicing− If maintenance and repair work is performed without
approval from the After Sales Service of PFEIFFER, theproduct guarantee will be voided.
− For spare parts, only use original parts from PFEIFFER that
correspond to the original specification.

Test

Measures in the case of a negative test
resultCheck the rotary movement Check the packing for correct tighteningof the actuator for a smooth, torque and tighten correctly if necessary,rotating movement.
see Chapter 5.1.1.
Check the functionality/energy supply of
the actuator and the attachments andtake suitable measures if necessary.

9.1 Periodic tests

If the actuator shaft is blocked, contact
PFEIFFER immediately through.

Depending on the conditions of use, the valve must be checked atdefined intervals in order to take remedial measures prior topossible malfunctions. The plant operator is responsible forpreparing a suitable test plan in consideration of the
documentation of the utilised components.

Decommission the valve, see chapter 10.
Then determine the cause and remedy it,
see Chapter 8.1.

Tip
After Sales Service can provide you with support for creating atest plan specific to your plant. Contact PFEIFFER.

PFEIFFER recommends the following inspections that can be carried out during operation:
Test

Measures in the case of a negative test
resultCheck the butterfly valve for Remedy any damage immediately, if
exterior damage (e.g. corro- possible. If required, decommission thesion).
valve, see chapter 10.
Check the imprints and impressions on the valve, adhesives and signs for legibility and completeness.

Request a replacement for damaged,
missing or faulty signs or adhesives andreplace them.

Check the butterfly valve forleaks from the outside.

Tighten the packing, see Chapter 5.1.1.

Clean text that is illegible due to dirt.
Tighten the screw connections on thebonnet and extension, see Chapter 5.1.1
or replace the corresponding seals.
Check the flange connection (tightening
torques) and replace the seals on theflange connection if necessary, see
Chapter 9.4.

If required, check the failsafe position of the valve(partial stroke/full stroketest).

Contact PFEIFFER.

9.2 Preparing maintenance workÖ Get the material and tools ready that are required for the
maintenance work.
Ö Identify the components that should be checked or serviced.
Ö If components are to be replaced, it is recommended tocontact PFEIFFER.
Ö Decommission the valve, see chapter “10 Decommissioning”.
Ö Interrupt the pneumatic energy to the valve (deenergise anddepressurise).

9.3 Maintenance work
9.3.1

Maintenance work on the attachments

Observe the documentation for the corresponding attachments.

9.3.2

Maintenance work on the actuator

Check the actuator, attachments and their piping forleaks.

Proper tightening of the pipe connections.

Check the inner tightness ofthe butterfly valve.

Rinse the plant part with the butterfly
valve open, to remove any dirt and/or
deposited foreign material from between
the seat and the seal ring.

9.3.3

Check the end position to the closed position and adjust if necessary.

At least one PFEIFFER Seal Kit is required to perform this work.

In the case of defective components, contact PFEIFFER.

Replace the seat and seal ring, see
Chapter 9.3.4

9-2

Observe the documentation for the corresponding actuator.

Maintenance work on the butterfly
valve in an installed condition

PFEIFFER recommends the procurement of a corresponding repkit, see Chapter “15.3 Spare parts”.

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June 2023 edition
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Servicing

9.3.3.1 Replacing the packing

Figure|9-1: Packing replacement

Table|9-1: Parts list
Pos.

Designation

Pos.

Designation

6

Shaft

64

Key

8

Gland

65

Screw

17

Bracket

66

Pin

18

Coupling

67

Wedge-lock-washer

39

Packing

68

Key

54

Stud bolt

108

Screw

55

Washer239

Support ring

56

Nut

500

Actuator

59

Spring washer

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9-3Servicing

Ö Secure the actuator (500) with a crane, see the corresponding actuator documentation.
Ö Mark the installation position of the actuator.
Ö Release only the screws (65) and wedge-lock-washers (67)
between the bracket (17) and the butterfly valve.
Ö Lift the actuator with the crane and put it down in a safe
place.
Ö Disassemble the coupling (18) and secure the key(s) (68) in it
to prevent it from falling out.
Ö Remove the key(s) (64).
Ö Remove the nuts (56) and wedge-lock-washers (55) or spring
washers (59). When reassembling the spring washer set, observe the correct sequence and alignment.
Ö Release the screws (108) until the stuffing box can be pulledoff.

Ö Tighten the nuts (56) alternately with slight manual force.
Make sure that the stuffing box does not tilt with respect tothe shaft.
Ö Assemble the key(s) (68).
Ö Tighten the nuts (56) in a criss-cross pattern with the specified
torques, see Chapter 15.1.1.
Ö Assemble the actuator in the marked installation position.
Ö Check the tightness of the packing (39) and the functionalityof the valve, see chapter “5.4 Checking the assembled valve”.
If the packing leaks, tighten the nuts (56) in a criss-cross pattern in small steps. If there is still leakage, contact PFEIFFER.

9.3.3.2 Replacing the gasket coverÖ Disassemble the gland (8) and remove the packing ring (39)carefully with a suitable tool. (The support ring (239) remains
in the body.)Ö Remove any residues in the packing area and clean it.
Ö Apply a thin layer of approved lubricant in the packing area,
see Chapter “15.1.2 Lubricants”
WARNING
Damage to the butterfly valve due to unsuitable lubricants!
The functionality of the butterfly valve is ensured only by using acertain lubricant. Unsuitable lubricants can corrode and damage
the surface.
Ö Only use lubricants recommended by PFEIFFER, see Chapter“15.1.2 Lubricants”.

Ö In the case of increased requirements on the outer tightness(TA-Luft), see Chapter “15.1.1 Tightening torques”.
Ö Insert the new packing rings (39) one after the other. If available, it must be ensured that the trimmed edges are offset
with respect to each other.
Ö Assemble the gland (8), nuts (56) and wedge-lock-washers(55) or spring washers (59).

Figure|9-3: Gasket cover replacement

Table|9-2: Parts list
Pos.

Designation

1

Body

6

Shaft

7

Bonnet25

Thrust ring37

End cap seal

53

Screw

Ö Release and remove the screws (53), see Figure 9 3.
Ö Disassemble the bonnet (7) and remove the old cover sealing(37). During disassembly, make sure that the thrust ring (25)does not fall out.
Ö Remove the residues and check for damage.
Ö Apply a thin layer of approved lubricant on the new gasket
cover (37) and thrust ring (25) and position them on the bonnet (7) and install.
Figure|9-2: Correct tightening of the gland (8)9-4Ö First tighten the screws (53) cross-wise with slight manual
force. Then tighten with the specified tightening torque,see Chapter “15.1.1 Tightening torques”.

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Servicing

Ö Check the butterfly valve for any leaks in this area prior tocommissioning. If there is still leakage, contact PFEIFFER.

9.3.4

Maintenance work on the butterfly
valve in a removed condition

Observe Chapter 11 for valve disassembly.
PFEIFFER recommends a rep-kit for the performance of this work,
see Chapter “15.3 Spare parts”.
Replacing the seat and seal ring
The series differ in the design of the sealing system, see Chapter
9.6.
The procedure for replacing the seat and seal ring is described inseparate documentation, see the “Applicable documents” in
Chapter 1.

9.4 Assembling and commissioning the valve
after maintenance work
The assembly and commissioning of the valve takes place according to the specifications in Chapter “5 Installation” and “6Start-up”.

9.5 Design of the sealing system
The following figures describe the constructive design of the sealing system of the BR 14t - LTR 43 butterfly valve series.

Figure|9-4: BR 14t - LTR 43

Table|9-3: Parts list for BR 14t - LTR 43
Pos.

Designation

1

Body

2

Disc

3

Clamping ring

4

Seal ring

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9-5Servicing

9-6

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June 2023 edition
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Decommissioning

10 Decommissioning
The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.
DANGER
Risk of bursting due to pressurised devices and components!
Butterfly valves and pipes are pressure equipment that can burst
if handled improperly. Projecting, flying components, fragments
and released pressurised medium can cause injuries or evendeath.
Before working on the valve:Ö Depressurise the concerned plant parts and valve. Also
discharge the residual energy.
Ö Empty the medium from the concerned plant parts andbutterfly valve.

WARNING
Danger of burning due to hot or cold components and pipe!
The valve and pipe can become very hot or very cold during
operation and cause burns upon contact.
Ö Let the components and pipes cool down or warm up.
Ö Wear protective garments and protective gloves.
Danger of injury due to pressurised components and escaping
medium!
Ö Pressurised components may not be loosened.
Hearing damage and deafness due to a high sound level!
During operation, medium-related noise emissions may begenerated depending on the plant conditions. In addition, there
may be a short-term high sound pressure level when a pneumatic
actuator or pneumatic attachment is suddenly ventilated without
noise-reducing elements. Both can damage hearing.
Ö Wear hearing protection when working in the vicinity of theactuator.

WARNING
Danger of injury due to residual medium in the butterfly valve!
When working on the butterfly valve, residual medium canescape and, depending on the medium properties, cause injuries(e.g. scalding, chemical burns).
Ö If possible, empty the medium from the concerned plant parts
and butterfly valve.
Ö Wear protective garments, protective gloves and eye
protection.
Danger of injury due to preloaded springs!
Actuators that are equipped with preloaded actuator springs areunder mechanical tension. The marking on the actuator typeplate indicates whether a spring return is available and the failsafe position. The marking on the type plates is described in the
instruction manuals for the actuators.
Ö Release the compression from the preloaded springs before
working on the actuator, see the corresponding actuator
documentation.

NOTE
If the actuator is delivered separately from the butterfly valve or if
it must be disassembled, the corresponding assembly instructions
must be observed.

To decommission the valve for maintenance work or fordisassembly, perform the following steps:
Ö Depressurise the pipes and butterfly valves and remove
residual medium from the pipe.
Ö Shut off the pneumatic energy and lock it, to deenergise anddepressurise the actuator.
Ö Let the pipe and butterfly valve components cool down or
warm up.

Danger of crushing due to moving parts!
The valve contains moving parts (e.g. shaft and disc) that canlead to crushing if reaching into it.
Ö During operation, do not reach into the bracket between thebutterfly valve and the actuator.
Ö Before working on the valve, interrupt and lock the pneumaticenergy and the control signal.
Ö Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö If the shaft is blocked, contact PFEIFFER.
Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the butterfly valve, exhaust air can escape, for example from theactuator.
Ö Wear eye protection when working in the vicinity of theactuator.

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June 2023 edition
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10-1Decommissioning

10-2

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Removal

11 Removal
The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.
The After Sales Service of PFEIFFER is glad to provide on-site
consultation and support.
WARNING
Danger of burning due to hot or cold components and pipe!
The valve and pipe can become very hot or very cold during
operation and cause burns upon contact.
Ö Let the components and pipes cool down or warm up.
Ö Wear protective garments and protective gloves.
Danger of crushing due to moving partsÖ Before working on the valve, interrupt and lock the pneumaticenergy and the control signal and release the spring tension
in the actuator if necessary.
Ö Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö If the shaft is blocked, contact PFEIFFER.
Danger of injury due to residual medium in the butterfly valve!
When working on the butterfly valve, residual medium canescape and, depending on the medium properties, cause injuries(e.g. scalding, chemical burns).
Ö Empty the medium from the concerned plant parts andbutterfly valve.
Ö Wear protective garments, protective gloves and eye
protection.
Danger of injury due to preloaded springs!
Actuators that are equipped with preloaded actuator springs areunder mechanical tension. The marking on the actuator typeplate indicates whether a spring return is available and the failsafe position. The marking on the type plates is described in the
instruction manuals for the actuators.
Ö Release the compression from the preloaded springs before
working on the actuator, see the corresponding actuator documentation.

NOTE
If the actuator is delivered separately from the butterfly valve or if
it must be disassembled, the corresponding assembly instructions
must be observed.

Ö To ensure collision-free removal, suitable measures must be
taken, see Chapter 5.3.2. In the case of noise-reducing versions of the wedge-lock-washer that also protrude past theoverall length, the order-related dimension sheet must be observed.

11.1 Removing the butterfly valve with anassembled actuator from the pipeÖ Fasten the valve with suitable lifting equipment and pay attention to the centre of gravity of the valve, see chapter “4.3Transporting and lifting the valve”.
NOTE
Swivel and/or tipping danger

Ö If necessary, release and remove the supports or mountings.
Ö Loosen the flange connection properly.
Ö Disassemble the screws and seals and store them appropriately.
Ö Lift the valve carefully out of the installation site using suitable
lifting equipment, see Chapter “4.3.2 Lifting the valve”.
Ö Check the closed position.
Ö Place the valve in a safe position on suitable ground and secure it to prevent it from tipping.
DANGER
Danger of injury due to a spring-loaded opening actuator
The uncontrolled swinging movement of the wedge-lock-washer
can be dangerous.
Ö Do not stay in danger zone.

Ö Mark or document the installation position of the actuator.
Ö For the transport and storage of the valve, observe Chapter“4 Shipment and on-site transport”.

11.2 Disassembling the actuatorÖ Secure the actuator with the crane.

Prior to disassembly, make sure that the following conditions aremet:Ö The valve is decommissioned, see chapter 10.
Ö When using manual auxiliary actuations, observe the corresponding documentation to bring the valve into the closed
position.

Ö Mark or document the installation position of the actuator.
Ö Only the screws (65) between the bracket and butterfly valve
may be loosened.
Ö Lift the actuator with the crane and put it down in a safe
place.

Ö Check the closed position.

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June 2023 edition
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11-1Removal

11-2

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Repairs

12 Repairs
If the valve is no longer compliant or if it does not work at all, it
is defective and must be repaired or replaced.

Ö Include the following information for returns:− Manufacturer number− Valve type
− Article number

NOTE
Damage to the valve due to improper repairs!
Ö Only have repair work performed by qualified and trained
personnel.
Ö If required, PFEIFFER can be contacted.

− Nominal size and version of the valve− Manual valve/automated valve− Medium (designation and consistency)− Medium pressure and temperature− Flow rate in m³/h
− Bench range of the actuator (e.g. 0.2 to 1 bar)
− Number of actuations (year, month, week or day)12.1 Sending devices to PFEIFFER− Installation drawing if available

Defective butterfly valves can be sent to PFEIFFER for repair.

− Completed declaration regarding contamination. This
form is available at  www.pfeiffer-armaturen.com.

When returning devices to PFEIFFER, proceed as follows:Ö Decommission the valve, see chapter 10, and disassemble it,
see Chapter 11.
Ö Decontaminate the butterfly valve. Remove residual medium
completely.
WARNING
Danger due to a contaminated valve!
Ö When returning a used valve to PFEIFFER for service, decontaminate the valve properly in advance.
Ö When returning a used valve, include the safety data sheet
for the medium as well as confirmation of decontamination of
the valve. Otherwise the valve will not be accepted.

Tip
PFEIFFER recommends documenting the following contamination
data in the form FM 8.7-6 “Declaration regarding the contamination of PFEIFFER valves and components”.

Ö Fill out the declaration regarding contamination.
Info
Further information about sending in devices or regarding
returns can be found at https://www.samsongroup.com/de/
service-support/after-sales-service/retouren/.

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June 2023 edition
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12-1Repairs

12-2

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Disposal

13 Disposal
Ö For disposal, observe the local, national and international
regulations.
Ö Do not dispose of old components, lubricant and hazardous
materials with domestic waste.

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13-1Disposal

13-2

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Certificates

14 Certificates
The declaration of conformity is available on the following
pages:− Declaration of conformity according to Pressure Equipment
Directive 2014/68/EU, see page 14-2.
− Declaration of conformity for completed machinery according
to Machinery Directive 2006/42/EC for butterfly valve
BR 14t - LTR 43, see page 14-3.
− Declaration of installation for partly completed machinery
according to Machinery Directive 2006/42/EC for butterfly
valve BR 14t - LTR 43, see page 14-4
The printed certificates correspond to the status at the time ofprinting. Further optional certificates are available upon request.

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14-1

Certificates14-2

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Certificates

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14-3Certificates

14-4

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Annex4

Annex

15.1.1.2 Stuffing box nuts (standard)

15.1 Tightening torques, lubricant and tools

Values in the following table according to technical data sheet
 LW-10006
Table|15-2: PN 10 / 16 / 25 and cl150 (max. 28 bar)

15.1.1 Tightening torques

Nominal size

15.1.1.1 Bonnet, seat, seat ring, retaining
ring, shaft, extension and bracket
Table|15-1: The tightening torques apply for materials A2-70,
1.4980, Monel K500 and 1.4462
Threadsize

Max. torque [Nm] forscrews according toDIN|7984 (low head),
see|Figure 1

Max. torque [Nm] forscrews according toISO|4762 (high head),
see|Figure 2

M6

7.3

9.1

M8

17.5

21.8

M10

35

44

M12

60

75

M16

144

180

M20

296

370

M24

486

608

M27

336

421

M30

457

571

M33

623

779

Graphite
PTFE
Max. perpacking
packing
missibleMmin. [Nm] Mmin. [Nm] Mmax. [Nm]DN

Stuffingbox

Ø shaft

3

80

M10

20

6

8

35

4

100

M10

20

6

8

35

6

150

M12

25

14

18

60

8

200

M12

25

14

18

60

10

250

M12

30

16

20

60

12

300

M12

35

18

23

60

14

350

M16

40

27

34

144

16

400

M16

50

33

41

144

18

450

M16

50

33

41

144

20

500

M20

60

48

60

296

24

600

M20

70

75

94

296

28

700

M20

70

75

94

296

30

750

M20

70

75

94

296

32

800

M20

80

85

106

296

36

900

M20

80

85

106

296

40

1000

M24

100

125

156

486

NPS

The values in the table apply for lubricated threads.
Table|15-3: PN 40 and cl300 (max. 55 bar)
Nominal size

Figure|15-1: Screw according
to DIN 7984

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June 2023 edition
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Figure|15-2: Screw according
to ISO 4762

Graphite
PTFE
Max. perpacking
packing
missibleMmin. [Nm] Mmin. [Nm] Mmax. [Nm]

NPS

DN

Stuffing
box

3

80

M10

20

6

8

35

4

100

M12

25

14

18

60

6

150

M12

30

16

20

60

8

200

M12

35

18

23

60

10

250

M16

40

27

34

144

12

300

M16

50

33

41

144

14

350

M20

60

48

60

296

16

400

M20

70

75

94

296

18

450

M20

70

75

94

296

20

500

M20

80

85

106

296

24

600

M24

100

125

156

486

28

700

M33

110

30

750

M24

120

32

800

M30

130

36

900

M30

130

40

1000

M30

130

Ø shaft

Upon request

15-1

Annex

Table|15-4: PN 63 (cl400) (max. 70 bar)
Graphite
PTFE
Max. perpacking
packing
missibleMmin. [Nm] Mmin. [Nm] Mmax. [Nm]

NPS

DN

Stuffing
box

3

80

M12

25

14

18

60

4

100

M16

30

21

27

144

6

150

M16

35

24

30

144

8

200

M20

40

34

42

296

10

250

M16

50

33

41

144

12

300

M20

60

48

60

296

14

350

M20

70

75

94

16

400

M27

80

115

18

450

M27

80

20

500

M30

100

24

600

M24

900

40

Torque
[Nm]

36

3

80

M10

20

25

19

21

12

4

100

M10

20

25

18

21

12

296

6

150

M12

25

56

42

47

28

143

336

8

200

M12

25

56

42

47

28

115

143

336

10

250

M12

30

65

49

54

33

156

195

432

12

300

M12

35

74

55

61

37

120

14

350

M16

40

108

81

90

54

130

16

400

M16

50

130

98

109

65

18

450

M16

50

130

98

109

65

20

500

M20

60

191

143

159

96

24

600

M20

70

302

226

252

151

28

700

M24

70

302

226

252

151

30

750

M20

70

302

226

252

151

32

800

M20

80

340

255

283

170

36

900

M20

80

340

255

283

170

40

1000

M24

100

498

374

415

249

Upon request

1000

Table|15-5: PN 100 and cl600 (max. 110 bar)
Nominal size

Graphite
PTFE
Max. perpacking
packing
missibleMmin. [Nm] Mmin. [Nm] Mmax. [Nm]

NPS

DN

Stuffingbox

Ø shaft

3

80

M12

25

21

26

60

4

100

M16

30

31

39

144

6

150

M16

35

35

44

144

8

200

M20

40

49

62

296

10

250

M16

50

48

60

144

12

300

M20

60

70

88

296

14

350

M20

70

111

138

296

16

400

M27

80

168

210

336

18

450

M27

80

168

210

336

20

500

M30

100

229

287

432

24

600

M24

120

28

700

M30

130

30

750

32

800

36

900

40

1000

15-2

Upon request

NPS

DN

Table|15-7: PN 40 and cl300
Nominal size
Stuffing
box

Ø
Shaft

Pure graphite
packing

Other packings
Torque[Nm]

800

T-presealed
[Nm]

32

Ø
Shaft

Other packings

T-presealed
[Nm]

750

Stuffingbox

Pure graphite
packing
Torque
[Nm]

30

M30

Nominal size

Torque[Nm]

700

Table|15-6: PN 10 / 16 / 25 and cl150

T-presealed
[Nm]

28

Ø shaft

T-presealed[Nm]

Nominal size

15.1.1.3 Stuffing box nuts (TA-Luft)

3

80

M10

20

25

19

21

12

4

100

M12

25

56

42

47

28

6

150

M12

30

65

49

54

33

8

200

M12

35

74

55

61

37

10

250

M16

40

108

81

90

54

12

300

M16

50

130

98

109

65

14

350

M20

60

191

143

159

96

16

400

M20

70

302

226

252

151

18

450

M20

70

302

226

252

151

20

500

M20

80

340

255

283

170

24

600

M24

100

498

374

415

249

28

700

M33

110

30

750

M24

120

32

800

M30

130

36

900

M30

130

40

1000

M30

130

NPS

DN

Upon request

EB|14t_EN
June 2023 edition
Subject to technical changes

Annex

Necessary data

Table|15-8: PN 63 / 100 and cl600
Pure graphite
packingNominal size

T-presealed[Nm]

Torque[Nm]− Manufacturer number

Torque
[Nm]

Ø
Shaft

Provide the following information in the case of questions and fortroubleshooting:T-presealed[Nm]

Stuffingbox

Other packings− Valve type

3

80

M12

25

56

42

47

28

− Nominal size and version of the valve

4

100

M16

30

85

64

71

42

− Manual valve/automated valve

6

150

M16

35

96

72

80

48

− Medium (designation and consistency)

8

200

M16

40

134

101

112

67

− Medium pressure and temperature

10

250

M16

50

130

98

109

65

− Flow rate in m³/h

12

300

M20

60

191

143

159

96

− Bench range of the actuator (e.g. 0.2 to 1 bar)

14

350

M20

70

302

226

252

151

− Number of actuations (year, month, week or day)

16

400

M27

80

458

344

382

229

− Installation drawing if available

18

450

M27

80

458

344

382

229

20

500

M30

100

625

469

521

313

− Completed declaration regarding contamination. This form isavailable at  www.pfeiffer-armaturen.com.

24

600

M24

120

28

700

M30

130

30

750

32

800

36

900

40

1000

NPS

DN

− Article number

Further information
The indicated data sheets and further information are available,
also in English, at the following address:
Upon request

PFEIFFER Chemie-Armaturenbau GmbH
Hooghe Weg 41 • 47906 Kempen • Germany
Phone: +49 2152 2005-0 • Fax: +49 2152 1580
E-Mail: sales-pfeiffer-de@samsongroup.com
Internet: www.pfeiffer-armaturen.com

15.1.2 Lubricant
Depending on the application and suitability, the following lubricants are approved by the manufacturer:− Metaflux 70-85 Lubricating metal paste (standard)− Gleitmo 595 (technical gases)− Gleitmo 595 with BAM approval (oxygen)
The plant operator is responsible for the use of other lubricants.

15.3 Spare parts
NOTE
If additional repairs or the replacement of further individual partsis required for the safe use of the butterfly valves, contact
PFEIFFER.

15.1.3 Tools
Suitable tools are required to work on the valve. Unsuitable tools
can damage the valve

The following spare part kits are available:− Seal Kit contains all soft seals and the stuffing box packing− Rep Kit contains a seal kit including seal ring and seat (series
related)15.2 Service
For maintenance and repair work as well as malfunctions or defects, contact the After Sales Service at PFEIFFER for support.

PFEIFFER recommends spare part kits for “Commissioning” andfor “2-year operation”, see Chapter:− “15.3.1 “Spare parts for the BR 14t - LTR 43 control andshut-off valve”

E-mailThe After Sales Service can be reached at the e-mail address“sales-pfeiffer-de@samsongroup.com”.

EB|14t_EN
June 2023 edition
Subject to technical changes

15-3Annex15.3.1 Spare parts for the control and shut-off valve BR|14t|-|LTR|43

Figure|15-3:

Exploded drawing of BR 14t - LTR 43

Table|15-9: Parts list for series BR 14t - LTR 43
Pos.

Designation

Pos.

Designation

1

Body

39*

Packing

2

Disc

50

Screw

3*

Seal ring

51

Wedge-lock-washer

5

Retaining ring

52

Screw

6

Shaft

53

Screw

7

Cover

54

Stud bolt

8

Gland

55

Washer

9

Pin

56

Nut

15

Extension

61

Stud bolt

16

Extension spacer

62

Wedge-lock-washer

17

Bracket

63

Nut

18

Coupling

64

Key

2X

Bearing

65

Screw

24

Spacer ring

66

Pin

25

Thrust ring

67

Wedge-lock-washer

28

Bearing

69

Pin

32*

Gasket disc

108

Screw

36

Bearing protector

165

Screw

37*

Gasket cover167

Wedge-lock-washer

38*

Gasket extension239

Support ring

* Recommended spare parts

15-4

EB|14t_EN
June 2023 edition
Subject to technical changes

EB|14t_EN
June 2023 edition
Subject to technical changes

EB|14t_EN
June 2023 edition
Subject to technical changes

EB|14t_EN
June 2023 edition
Subject to technical changes

PFEIFFER Chemie-Armaturenbau GmbH
Hooghe Weg 41 · 47906 Kempen · Germany
Phone: +49 2152 2005-0 · Fax: +49 2152 1580
E-Mail: sales-pfeiffer-de@samsongroup.com · Internet: www.pfeiffer-armaturen.com

EB|14t_EN
June 2023 edition
Subject to technical changes