MOUNTING AND
OPERATING INSTRUCTIONSEB 14pTranslation of the original manual

High-Performance Control and Shut-off Butterfly valve
BR 14p - Type PSA • DIN and ANSI version
to combine with actuators
March 2024 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, the respective 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 14b_EN
March 2024 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

1-2

1.3

Notes regarding possible property damage

1-3

1.4

Warning notes on the device

1-4

2Markings on the device

2-1

2.1

Butterfly valve type plate

2-2

2.2

Actuator type plate

2-2

2.3

Turning direction notice sign

2-2

3

Design and principle of operation

3-1

3.1

Variants

3-1

3.2

Additional fittings

3-1

3.3

Attachments

3-2

3.4

Technical data

3-2

3.5

Butterfly valve assembly

3-2

3.5.1
4

Assembly of butterfly valve

3-2

Shipment and on-site transport

4-1

4.1

Accepting delivery

4-1

4.2

Unpacking the butterfly valve

4-1

4.3

Transporting and lifting the butterfly valve

4-1

4.3.1

Transporting

4-1

4.3.2

Lifting

4-1

4.3.3

Lifting points on the body

4-2

4.3.4

Lifting points on the bracket

4-3

4.4
5

Storing the butterfly valve
Installation

4-3
5-1

5.1

Installation conditions

5-1

5.2

Preparing for assembly

5-1

5.3

Assembling the butterfly valve and actuator

5-1

5.4

Installing the butterfly valve in the pipe

5-2

5.4.1
5.4.2
5.5

General5-2Installing the butterfly valve

5-3

Checking the assembled butterfly valve

5-3

5.5.1

Functional test

5-3

5.5.2

Pressure test of the pipe section

5-4

5.5.3

Rotary movement

5-4

5.5.4

Fail-safe position

5-4

6Start-up

6-1

7

Operation

7-1

EB 14p_EN
March 2024 edition
Subject to technical changes

Content

8

Malfunction

8-1

8.1

Detecting and rectifying errors

8-1

8.2

Carrying out emergency measures

8-2

9Servicing

9-1

9.1

Periodic tests

9-1

9.2

Maintenance work

9-2

9.2.1

Replacing the seat ring

9-2

9.2.2

Replace seat ring and valve disc ring

9-2

Ordering spare parts and consumables

9-2

9.3

10 Decommissioning

10-1

11 Removal

11-1

11.1

Removing the butterfly valve from the pipe

11-1

11.2

Disassembling the actuator

11-1

12 Repairs

12-1

12.1

Replacing the V-ring packing

12-1

12.2

Replacing the seat ring

12-1

12.2.1

Replacing the seat ring in butterfly valves from DN 400 (NPS16)

12-1

12.3

Replacing the seat ring and the valve disc ring

12-1

12.4

Disconnecting the valve disc/valve shaft connection

12-3

12.5

Additional repairs

12-3

12.6

Sending devices to PFEIFFER

12-3

13 Disposal

13-1

14 Certificates

14-1

15 Annex

15-1

15.1

15-1

Tightening torques, lubricant and tools

15.1.1

Tightening torques

15-1

15.1.2

Lubricant15-3

15.1.3

Tools

15-3

15.2

Spare parts

15-3

15.3

Service15-6

EB 14p_EN
March 2024 edition
Subject to technical changes

Safety instructions and safety measures

1

Safety instructions and safety measures

Intended use
The PFEIFFER butterfly valve BR 14p - type PSA is in combination
with an quarter-tun actuator for the regulation of the volume
flow, pressure and temperature of fluid, gaseous or vaporous media with high requirements in the pressure swing adsorption process− The butterfly valve and its drive are designed for precisely
defined conditions (e.g. operating pressure, utilised medium,
temperature).

Personal protective equipment
Depending on the utilized medium, PFEIFFER recommends thefollowing protective equipment:− Protective garments, protective gloves and eye protection
when using hot, cold, aggressive and/or corrosive media.
− Hearing protection when working near the butterfly valves.
− Request additional protective equipment from the plant operator.
Prohibition of modifications

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.

Changes to the product are not permitted without consulting
PFEIFFER. Non-compliance invalidates the product guarantee.
PFEIFFER shall not be held liable for any resulting property damage or personal injury.

If the operator would like to use the butterfly valve in otherapplications or environments, they must contact PFEIFFER.

Protective devices− Automated butterfly valves are only intended for use, after installation in a pipe system and after connecting the drive tothe control, to cut off the media, let it flow through or regulate
it within the permitted pressure and temperature limits.
− The data sheet contains the permissible pressure and temperature range for these butterfly valves  TB 14p.
− The safety regulations that apply to the pipe system in which
the valves are installed and to the control system to which theactuator is connected also apply to the butterfly valves.
This manual only provides safety instructions that are to beobserved additionally for butterfly valves. There may be additional safety instructions in the manuals for the actuator assemblies.
− It is assumed that this chapter is observed when using thevalve as intended.
Reasonably foreseeable erroneous use and unintended use
The butterfly valve is not suited for the following areas of use:
− Use outside of the technical data and the limits defined by thedesign.
− Use outside of the limited defined by the peripheral devices
installed on the butterfly valve.

In the case of a power supply failure, the butterfly valve automatically switches to a certain fail-safe position, see Fail-safe positions”in Chapter “3 Design and principle of operation”.
− The fail-safe position corresponds to the effective direction
and is indicated on the type plate of the rotary actuators, see
the actuator documentation.
− The valve is to be included in the equipotential bonding of theplant.
Warning of residual risks
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 of thebutterfly valve.
− Therefore, the operator and operating personnel must observe all the hazard information, warning information andinformation in this installation and operating manual.
Obligation of the operator to exercise diligence
The operator is responsible for proper operation as well as compliance with the safety regulations.

− Use of third-party spare parts.

− 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.

− Performance of maintenance and repair work that is not described.

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

Qualification of operating personnel

It is not the responsibility of PFEIFFER and therefore when using
the butterfly value ensure that:

Furthermore, the following activities are considered unintendeduse:

The butterfly valve may only be disassembled, dismantled, assembled and commissioned by qualified specialist personnel
trained in pressurised pipes who are familiar with the assembly,
commissioning and operation of this product.
− 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.

EB 14p_EN
March 2024 edition
Subject to technical changes− The butterfly valve is only used as intended as described inthis chapter.
− An actuator unit that is subsequently installed on the butterfly
valve is adapted to the butterfly valve and the max. torque isobserved, and is correctly adjusted in the end positions, andin particular in the closed position of the valve.

1-1

Safety instructions and safety measures− The pipe system and control system are properly installed
and regularly checked. The wall thickness of the butterfly
valve body is measured such that an additional load of theusual magnitude is taken into account for a pipe system installed properly in this way.
− The valve is connected properly to these systems.
− The customary flow rates in continuous operation are not exceeded in this pipe system.
− It is recommended to contact Pfeiffer in the case of abnormal
operating conditions, such as vibrations, hydraulic shock,cavitation and also small amounts of solid matter in the medium, especially abrasive matter.
− Coordinate operating parameters near the cavitation limits
and/or with noise emission clearly above 85 dB withPFEIFFER.
Obligation of operating personnel to exercise diligence
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.
Applicable standards and directives− The butterfly valves fulfil the requirements of the European
Pressure Equipment Directive 2014/68/EU and the European
Machinery Directive 2006/42/EC.
In the case of butterfly valves provided with a CE marking,the Declaration of Conformity provides information about theconformity assessment procedure that was used.
The corresponding declarations of conformity are available
in the Annex of this EB, see chapter “14 Certificates“.
− According to an ignition hazard assessment according to
DIN EN ISO 80079-36, PFEIFFER butterfly valves do nothave any own potential ignition sources and therefore are notsubject to Directive 2014/34/EU.
CE marking based on this standard is not permitted. The inclusion of valves in the equipotential bonding of a plant applies independently of the directive for all metal parts in potentially explosive areas.

1.1 Notes regarding possible severe personnel injury
DANGER
Hazards and ineffectiveness of the warranty!
In the case of non-compliance with the following hazard andwarning information, hazards may arise and the warranty provided by PFEIFFER may become invalid.
Ö Observe the following hazards and warning information.
Ö Contact PFEIFFER in the case of questions:

1-2

DANGER
Hazards and damage due to unsuitable butterfly valves!
Butterfly valves whose permissible pressure/temperature range(=”rating”) is not sufficient for the operating conditions can posea danger to the user and cause damage to the pipe system.
Ö Only operate butterfly valves with a permissible pressure/temperature range (=”rating”) sufficient for the operating
conditions, see the data sheet  TB 14p
Risk of bursting of the pressure equipment!
Butterfly valves and pipes are pressure equipment. Improper
opening can cause the bursting of butterfly valve components.
Ö Observe the maximum permissible pressure the butterfly
valve and plant.
Ö Before working on the butterfly valve, depressurise the concerned plant parts and the butterfly valve.
Ö Before removing the butterfly valve from the pipe or loosening the screw connection on the bonnet, completely release
the pressure in the pipe so that the medium does not escapeuncontrolled from the line.
Ö Empty the medium from the concerned plant parts and butterfly valve. (Wear protective equipment).

1.2 Notes regarding possible personnel injury
WARNING
Danger of burning due to hot or cold components and pipes!
Depending on the utilised medium, butterfly valve components
and pipes can become very hot or very cold and cause burns
upon contact.
Ö Butterfly valves must be protected against contact in the caseof operating temperatures >+50 °C or <-20 °C together withthe pipe connections.
Danger of injury due to pressurised components and escaping
medium!
Ö Do not loosen the screw of an optional test connection while
the butterfly valve is pressurised.
Danger of crushing due to moving parts!
The butterfly valve contains moving parts (actuator stem andcontrol shaft) that can lead to crushing if reaching into it.
Ö Do not reach into the yoke during operation.
Ö When working on the butterfly valve, interrupt and lockpneumatic energy and the control signal.
Danger of injury due to preloaded springs!
Butterfly valves that are equipped with preloaded actuator
springs are under mechanical tension.
Ö Before working on the actuator, release the compression fromthe preloaded springs, see the corresponding actuator documentation.

EB 14p_EN
March 2024 edition
Subject to technical changes

Safety instructions and safety measures

WARNING
Danger of injury during the switching operation if performing
test runs on butterfly valves not installed in the pipe!
Ö Do not reach into the butterfly valve. This can result in serious
injuries.
Danger of injury due to venting the actuator!
During operation, when regulating or opening and closing thebutterfly valve, the actuator can be ventilated.
Ö Install the butterfly valve such that the actuator does not ventilate at eye level.
Ö Use suitable silencers and plugs.
Ö Wear eye protection and, if necessary, hearing protection
when working near valves.
Danger of injury due to residual medium in the butterfly valve!
When a butterfly valve must be removed from a pipe, medium
can escape from the pipe or the butterfly valve.
Ö In the case of media that is harmful to health or hazardous,
the pipe must be completely emptied before a butterfly valve
can be removed.
Ö Pay attention to the afterflow of residuals or residuals that remain in dead spots.
Danger of injury due to the releasing of body screw connections!
If the body screw connections must be released, medium can escape from the butterfly valve.
Ö The screw connections on the connection of the body parts
may only be released or loosened after the butterfly valve has
been removed.
Ö When reassembling, tighten the screws according to thespecifications in chapter “15.1.1 Tightening torques” using atorque wrench.
Hazards due to incorrect butterfly valve use!
The incorrect use of the butterfly valve can represent a hazard forthe user and cause damage to the pipe system that are then nolonger the responsibility of PFEIFFER.
Ö The material selected for the parts of the butterfly valve thatcome into contact with the media must be suitable for the utilised media, pressures and temperatures.
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.
Danger due to incorrect installation in case of use as an end
fitting!
The seal is no longer guaranteed if the installation location isincorrect.

Fig.1-1:

Installation location as an end fitting

1.3 Notes regarding possible property
damageNOTE
Damage to the butterfly valve due to contamination!
Contamination (e.g. solid particles) in the pipes can damage thebutterfly valve.
Ö The plant operator is responsible for cleaning the pipes in theplant.
Ö Rinse the pipes prior to commissioning.
Ö Observe the maximum permissible pressure the butterfly
valve and plant.
Damage to the butterfly valve due to unsuitable medium properties!
The butterfly valve is designed for a medium with certain properties. Other media can damage the butterfly valve.
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. Deviating torques can lead to butterfly valve leakage ordamage.
Ö Excessively tightened components are subject to increasedwear.
Ö Insufficiently tightened components can cause leakage.
Ö Observe the tightening torques, see chapter “15.1.1 Tightening torques”.
Specific aspects in case of use for control purposes!
Ö In the case of use for control purposes, observe the limitations
indicated above in the data sheets.

Ö Assemble the butterfly valve such that the fastening ring
fastened on the valve body with cylinder screws or a tension
spring is pressed against the pipe flange.

EB 14p_EN
March 2024 edition
Subject to technical changes

1-3Safety instructions and safety measures

NOTE
Deviation of the breakaway and actuating forces due tonon-actuation of the butterfly valve!
Depending on the period of time of non-actuation, the breakaway and actuation forces can deviate considerably from the actuating power data in the data sheet.
It is recommended to actuate the butterfly valve at regular intervals.
Ö In consideration of the design, actuation must take place during the year.
Ö Indicate the duration of non-actuation when making an enquiry, so that this condition is taken into consideration in theactuator design.
Ö In the case of retrofitted actuators by the operator, the correct
actuator design as regards the duration of non-actuation is
no longer the responsibility of PFEIFFER.

There is a danger of crushing due to the rotary movements of theactuator- and control shaft when reaching into the yoke as longas the pneumatic power is connected to the actuator. At the operator’s request, a warning note can be attached to the valve.

Damage to the seat ring or the sealing strip
Turning the valve disc over 0° leads to irreparable damage to theseat ring or the sealing strip.
Ö Only operate the valve disc within the range of 0°-90°
Damage to the butterfly valve due to unsuitable tools!
Unsuitable tools can damage the butterfly valve.
Ö Suitable tools are required to work on the butterfly valve, see
Chapter “15.1.3 Tools”.
Damage to the butterfly valve due to unsuitable lubricants!
Unsuitable lubricants can corrode and damage the surface.
Ö The butterfly valve material requires suitable lubricants, see
Chapter “15.1.2 Lubricants”.

1.4 Warning notes on the device
Warning of moving parts

Fig.1-2:

1-4

Warning of moving parts

EB 14p_EN
March 2024 edition
Subject to technical changes

Markings on the device

2Markings on the device

Each butterfly valve usually has the following marking.
Table|2-1: Marking on the type plate and on the body of the butterfly valve
Pos.

For

1

Manufacturer

PFEIFFER

Marking

RemarkAddress see Chapter “15.3 Service”

2

Valve typeBR (and number value)e.g. BR 14p = Series 14p - type PSA, see the PFEIFFER catalogue

3

Body material

e.g. 1.4408

No. of the material standard according to DIN EN 10213-4

4

Size

DN (and number value)

Number value in [mm], e.g. DN 200 / number value in [inches], e.g. NPS8

5Maximum pressure

PN (and number value)

Number value in [bar] e.g. PN 40 / number value, e.g. cl150 at room temperature

Max. permissible operating temperature

TS (and number value)

Max. permissible operating pressure

PS (and number value)

PS are TS are related values here at the max. permissible operating temperature with themax. permissible operating overpressure, see the Pressure-Temperature Diagram on the data
sheet  TB 14p

Test pressure

PT (and number value)

The test pressure must be observed depending on the device

6

7

34

1234

/001

/001
Valve no. within the item
Item in the order

Manufacturer number
e.g. 331234/001/001
from 2018

Order
Year of manufacture (39=2019, 30=2020, 31=2021,
32=2022, 33=2023, 34=2024 etc.)
21

1234

/001

/001
Valve no. within the item

8

Manufacturer number
e.g. 211234/001/001
2009 to 2017

Item in the order
OrderYear of manufacture (29=2009, 20=2010, 21=2011,22=2012 etc.)
207

1234

/001

/001
Valve no. within the item
Item in the order

Manufacturer number
e.g. 2071234/001/001
until 2008

Order
Year of manufacture (205=2005, 206=2006, 207=2007etc.)
9Year of manufacture

e.g. 2024

Upon customer request, the year of manufacture can also be indicated on the valve

10

Seat material

e.g. PTFE/glass

Material marking

11

Shaft material

e.g. 1.4542/H1150

No. of the material standard according to DIN EN 10088-3

Test point number

e.g. TEST POINT
F123201-1

Test point numbers are specified by the customer

Conformity

CE

Conformity is certified separately by Pfeiffer

Code No.

0035“Notified body” according to EU Directive = TÜV Rheinland Service GmbH

15

Flow directionÎ

16

Direction of rotation

12
13
14

Data/Matrix code

Attention: see the note in Chapter “5.4 Installing the butterfly valve in the pipe”
Reference to the direction of rotation

Info
Markings on the body and the type plate must be permanent so that the valve remains identifiable.

EB|14p_EN
March 2024 edition
Subject to technical changes

2-1Markings on the device

2.1 Butterfly valve type plateFig.2-1:

Marking positions of the type plate on the butterfly valve BR 14b / 14c

2.2 Actuator type plate
See the corresponding actuator documentation.

2.3 Turning direction notice sign
The turning direction is indicated on the butterfly valve by a sign.

Fig.2-2:

2-2

Turning direction notice sign

EB|14p_EN
March 2024 edition
Subject to technical changes

Design and principle of operation

3

Design and principle of operation

VersionPressure swing adsorption (PSA) is a method used to separate agas from a gas mixture as well as to dry or clean gases.
The purity and quantity of the gas to be extracted strongly depends on the control valves used in this process.
The control valves used in PSA applications must shut-off tightly,
have short opening and closing times as well as a high level ofoperational reliability.
The double-eccentric control and shut-off butterfly valve
BR 14p - type PSA fulfils these high requirements.

Fail-safe position
Depending on the mounting of the pneumatic actuator, the butterfly valve has two fail-safe positions that are activated when thepressure is released as well when the supply air fails:− Butterfly valve with fail-close actuator [FC]:
Upon air failure, the butterfly valve is closed. The butterfly
valve opens when the signal pressure increases, acting
against the force of the springs.
− Butterfly valve with fail-open actuator [FO]:Upon air failure, the butterfly valve is opened. The butterfly
valve closes when the signal pressure increases, acting
against the force of the springs.

Function and principle of operation

Changing the fail-safe position

The process medium can flow through the valve in both directions.

The fail-safe position of the actuator can be reversed if required,for this purpose see the installation and operating instructions forthe respective pneumatic actuator.

The valve disc (4) determines the flow through the free area between valve disc and seat ring (14). Butterfly valves are sealed
between the valve disc (4) and the seat ring (14).
The control shaft (2) is sealed by a packing (15). The standard
packing is a maintenance-free PTFE V-ring packing which isloaded by disc springs (13).
Optionally, a Graphite/Inconel packing can be used which is also loaded by disc springs (14).

Operating elements and functions
The BR 14p - type PSA butterfly valve can be selected in the following versions:− With BR 30a diaphragm multi-turn actuator.
− With rotary actuators from other manufacturers (for details,
see the relevant data sheet).

3.1 Variants− Special material− Low-temperature version

3.2 Additional fittings
Strainer
PFEIFFER recommends installing a strainer in front of the butterfly
valve. A strainer prevents the solid content in the medium fromdamaging the butterfly valve.
Fig.3-1:

Direction of flow

Bypass and shut-off valve
The direction of flow and the differential pressure determine thebreakaway torque to open the butterfly valve.
The double-eccentric bearing design of the control shaft causes
the valve disc on opening and closing to remain in contact withthe seat only over a very small angle of rotation, see Fig. 3-1.
This reduces wear and increases the service life of the valve. In
addition, it reduces the breakaway torque.
When the process medium flows through the valve in direction A(Fig. 3-1), the valve disc is slightly pressed out of the seat. This
reduces the pre-load force and the breakaway torque.
When the process medium flows through the valve in direction B,
the pre-load force increases as the breakaway torque rises.

EB 14p_EN
March 2024 edition
Subject to technical changes

PFEIFFER recommends installing a shut-off valve in front of thestrainer as well as behind the butterfly valve and to create a bypass. By means of the bypass, the entire plant does not have tobe decommissioned during maintenance and repair work on thebutterfly valve.
Insulation
The butterfly valves can be insulated to reduce the passage ofheat energy. Observe the notes in Chapter “ 5 Assembly”.
Test connection
In the version with a double stuffing box, a test connection (e.g.
G¼“) can be used on the upper flange to check the tightness ofthe butterfly valve towards the atmosphere.

3-1

Design and principle of operation

Grip protection
In the case of conditions of use that require a high level of safety(e. g. if the butterfly valve is freely accessible to untrained specialist personnel), PFEIFFER offers a safety guard to prevent therisk of crushing due to moving parts (actuator- and control shaft).
The risk assessment of the plant by the operator will indicate if
the installation of this protective device is required for the safe
operation of the butterfly valve in the plant.

NOTE
Damage due to cold welding of the screws in the body!
PFEIFFER recommends a heavy-duty grease paste (e.g. Gleitmo
805, manufacturer Fuchs) to prevent the cold-welding of thescrews in the bodies.
Ö Do not use this product for butterfly valves with use of oxygen.
Ö A suitable lubricant must be selected for grease-free butterfly
valves, especially for use with oxygen.

3.3 Attachments
The following accessories are available either individually or in
combinations:− Control shaft extension (100 mm standard)Info
The position and arrangement of the individual parts shown inthe drawings must be observed during assembly.

− Pneumatic or electric rotary actuator− Positioner− Limit switch

3.5.1

Assembly of butterfly valve− 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 offer information about the valve version, see Chapter “2 Markings on the device”.
Info− Detailed information is available in the data sheet  TB 14p.
− The documentation for the special ball valves BR 14p that are
not described in this chapter can be requested from PFEIFFER.

3.5.1.1 Preassembly of the butterfly valvesÖ Place the valve body (1) on a clean surface at working height
so that the bearing area of the shaft is easy to reach.
Ö Insert the ring (23) into the groove on the stuffing box side of
the valve housing (1).
Ö Screw the intermediate flange (6) to the valve housing (1) using screws (30).
Info
The permissible torque for tightening the intermediate flange canbe found in Table 15-2 in Chapter “15.1.1 Tightening torques.

Ö Press the bearing bush (10a) from the stuffing box side into
the shaft bore of the valve housing (1) as far as it will go using a suitable mandrel.
Ö Insert the distance bush (12a).

3.5 Butterfly valve assembly
The BR 14p - type PSA butterfly valves have design differences inthe various versions so that they cannot be documented in one
construction manual.
− Chapter 3.5.1 describes the assembly of the
BR 14p - type PSA butterfly valve in the standard version.
− BR 14p - type PSA butterfly valve in other versions are described in separate chapters.
Preparation of the assembly
To assemble the butterfly valve, all parts must be prepared, e.g.
the parts are carefully cleaned and placed on a soft mat (rubber
mat or other). Keep in mind that plastic parts are almost always
very soft and very delicate, and in particular the sealing surfaces
may not be damaged.

3-2Ö Press the bearing bush (10b) from the bonnet side into theshaft bore of the valve housing (1) as far as it will go using asuitable mandrel.
Ö Insert the distance bush (12b).

3.5.1.2 Modular unit of the valve disc and control shaft
Info
The valve disc (4) forms a modular unit with the control shaft (2),which is easily assembled with grooved pins (28). This unit may
be separated for assembly.
Ö Only ever use these components together.

EB 14p_EN
March 2024 edition
Subject to technical changes

Design and principle of operation

Fig.3-2:

Sectional drawing of the BR 14p - type PSA butterfly valve

Table|3-2: List of parts
Item

Description

Item

Description

Item

Description

1

Valve body

11

Bearing bush21

O-ring2

Control shaft

12

Distance bush22

O-ring3

Shaft head

13

Disc spring set

23

Ring

4

Valve disc

14

Seat ring

24

Screw

5

Valve disc ring

15

V-ring packing

25

Screw

6

Intermediate flange

16

Disc

26

Screw

7

Bonnet

17

Disc

27

Screw

8

Stuffing box flange

18

Disc

28

Grooved pin

9Fastening ring

19

Ring

29

Screw

10

Bearing bush20

O-ring30

Screw

EB 14p_EN
March 2024 edition
Subject to technical changes

3-3Design and principle of operation

3.5.1.3 Assembling the valve disc, control shaft
and valve bodyÖ Place the valve disc (4) with the sealing side facing downwards on a surface positioned at working height.

Ö Tighten the screws (27) evenly and alternately.
Info
The permissible torque for tightening the stuffing box flange canbe found in Table 15-1 in Chapter “15.1.1 Tightening torques.

Ö Carefully place the valve housing (1) with the side of the sealing strip facing upwards over the valve disc so that it is centred in the passage of the housing.

3.5.1.5 Final assembly of the valve disc
NOTE
Damage due to improper assembly!
Ö Do not damage the sealing surfaces of the valve body andthe valve disc.

Info
The bearing bores of the valve disc (4) must be aligned with theshaft bore of the valve body (1). The eccentricity of the valve discmust also be taken into account.

Ö Push the control shaft (2) through the shaft bore of the valve
body (1) and the bearing bores of the valve disc (4).
Ö Pin the valve disc (4) and control shaft (2) with grooved pins
(28).

3.5.1.4 Final assembly of the butterfly valve
Ö From the bonnet side, push the disc (18) over the control shaft
up to the mounted distance bush (12b).
Ö Screw the shaft head (3) onto the face of the control shaft using the screw (29).

Ö Turn the valve body by 180° so that the sealing surface of thevalve disc is facing upwards.
Ö Insert the O-ring (20) into the groove of the already assembled valve disc (4). Ensure cleanliness.
Ö Place the valve disc ring (5) on the valve disc and adjust withscrews (25).
Ö Tighten the screws (25) evenly and alternately.
Info
The permissible torque for tightening the valve disc ring can befound in Table 15-4 in Chapter “15.1.1 Tightening torques.

Ö Push the seat ring (14) onto the fastening ring (9).
Ö Insert the O-rings (21 and 22) into the grooves of the fastening ring. Ensure cleanliness.
Ö Place the pre-assembled fastening ring in the corresponding
recess in the valve body and adjust with the screws (24).
NOTE
Damage due to improper assembly!
Ö Do not damage sealing surfaces.

Ö Push the ring (19) onto the bonnet (7).
Ö Insert the disc (17) into the recess provided in the bonnet (7).
Ö Insert the pre-assembled bonnet into the shaft bore of thevalve body and adjust with screws (26).
Ö Tighten the screws (26) evenly and alternately.

Ö Tighten the screws (24) evenly and alternately.
Info
The permissible torque for tightening the fastening ring can befound in Table 15-5 in Chapter “15.1.1 Tightening torques.

Info
The permissible torque for tightening the bonnet can be found in
Table 15-3 in Chapter “15.1.1 Tightening torques.

Ö From the stuffing box side, push the disc (16) over the control
shaft to the corresponding position in the valve body.
Ö Push the PTFE V-ring packing (15) over the control shaft into
the body bore and press in with an assembly sleeve. Refer tothe sectional drawing Fig. 3-2 for the arrangement of the
V-ring packing.
Ö Insert the disc spring set (13). The arrangement of the discsprings is shown in the sectional drawing in Fig. 3-2.
Ö Press the bearing bush (11) into the stuffing box flange (8).
Ö Place the pre-assembled stuffing box flange on the intermediate flange and adjust with screws (27).

3-4

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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.
NOTE
Damage to the butterfly valve due to improper transport andstorage!
Ö Butterfly valves must be handled, transported and stored withcare.

4.1 Accepting delivery
Perform the following steps after receiving the goods:
Ö Check the scope of supply. Compare the delivered goods
with the delivery note.
Ö Check the supply for transport damage. Report transport
damage to PFEIFFER and the transport company (see the delivery note).

4.2 Unpacking the butterfly valve
Carry out the following steps:
Ö Unpack the butterfly valve directly before lifting for installation into the pipe.
Ö Leave the butterfly valve on the pallet or in the transport container for on-site transport.
Ö The protective caps on the butterfly valve inlet and outlet prevent foreign matter from entering the butterfly valve anddamaging it. Only remove the protective caps prior to installation in the pipe.
Ö Dispose of the packaging properly.

WARNING
Danger of injury due to the tipping of the butterfly valve!
Ö Observe the centre of gravity of the butterfly valve.
Ö Secure the butterfly valve against tipping and twisting.

NOTE
Damage to the butterfly valve due to improper fastening of thesling!
The screwed-in lifting eyes on PFEIFFER actuators are used only
for actuator assembling and disassembling as well as for lifting
the actuator without the butterfly valve. These lifting eyes are notintended for lifting the complete butterfly valve.
Ö When lifting the butterfly 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 Do not use the control air lines, accessories or other components with safety functions for suspension or damage them.

4.3.1

Transporting

The butterfly valve can be transported using lifting equipment
such as a crane or a forklift.
Ö Leave the butterfly valve on the pallet or in the transport container for transport.
Ö Butterfly valves that weigh more than approx. 10 kg shouldbe transported on a pallet (or supported similarly) (also to theinstallation site). The packaging should protect the butterfly
valves from damage.
Ö Comply with the transport conditions.
Transport conditions

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

WARNING
Overturning of the lifting equipment and damage to the load
lifting equipment by exceeding the lifting capacity!
Ö Only used approved lifting equipment and load lifting equipment whose lifting capacity corresponds at least to the weightof the butterfly valve including the actuator.
Ö Take the weights from the respective data sheet.

Ö Protect the butterfly valve against external influences, such as
impacts.
Ö Do not damage the corrosion protection (paint, surface coating). Repair damage immediately.
Ö Protect the butterfly valve against moisture and dirt.

4.3.2

Lifting

When installing the butterfly valve in the pipe, larger butterfly
valves can be lifted using lifting equipment such as a crane or
forklift.
Conditions for liftingÖ Use a hook with a safety clamp as the suspension element sothat the sling cannot slip off the hook during lifting and transport, see Fig. 4-1.
Ö Secure the sling against shifting and slipping off.

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March 2024 edition
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4-1

Shipment and on-site transport

Fig. 4-1:

Lifting points of the BR 14p - type PSA butterfly valve

Ö Fasten the sling such that it can be removed again after installation in the pipe.

4.3.3

Lifting points on the bodyÖÖ Attach the eye bolts in the flange bores in the body. When
doing so, make sure that the carrying capacity of the utilised
eye bolts is sufficient.

Ö In the case of interruptions in work, do not leave the lifting
equipment suspended in the air for a long period of time.

Ö Connect the lifting sling with hooks to the eye bolts. Make
sure that the hook is seated properly in the eye bolts.

Ö Lift the butterfly valves aligned in the same direction in which
they will be installed in the pipe.

Ö Fasten a lifting sling to each suspension element (e.g. hook)of the crane or forklift, see Fig. 4-1. When doing so, ensure
the safety, bearing capacity and length of the lifting slings.

Ö Avoid swinging and tipping the butterfly valve.

Ö Always lift the butterfly valve in the centre of gravity of theload to prevent uncontrolled tipping.
Ö Make sure that in the case of butterfly valves, any slings between the lifting eyes on the rotary actuator and suspension
element are not loaded. These slings are used only to secure
the load against turning over while lifting. Before lifting thebutterfly valve, pretension this sling so it is taut.
DANGER
Danger due to incorrect lifting and transport!
The lifting points for the lifting slings shown in the schematic
drawing serve as examples for most valve variants. On site theconditions for lifting and transporting the valve can change however.
Ö The operator makes sure that the valve is lifted and transported safely.

4-2

Ö In the case of an actuator with a lifting eye: fasten additional
lifting slings to the lifting eye on the actuator and on the suspension element.
Ö Lift the butterfly valve carefully. Check if the load lifting
equipment holds.
Ö Move the butterfly valve at a constant speed to the installationsite.
Ö Install the butterfly valve in the pipe, see chapter 5.4
Ö After installation in the pipe: check that the flanges are firmly
tightened and that the butterfly valve holds in the pipe.
Ö Remove the lifting slings.

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Shipment and on-site transport

4.3.4

Lifting points on the bracket

Ö Fasten a lifting sling to the bracket and the suspension element (e.g. hook) of the crane or forklift, see Fig. 4-1. When
doing so, ensure the safety, bearing capacity and length ofthe lifting slings.
Ö In the case of an actuator with a lifting eye: fasten additional
lifting slings to the lifting eye on the actuator and on the suspension element.
Ö Lift the butterfly valve carefully. Check if the load lifting
equipment holds.
Ö Move the butterfly valve at a constant speed to the installation
site.

Info
− In the case of butterfly valves that are delivered without an actuator, the valve disc is not secured to prevent it from moving. It
must not opened from the closed position due to external influences (e.g. shaking).
− Only in the case of butterfly valves with a pneumatic actuator
does the valve disc protrude outside of the body on body sides
in the delivered state. The packaging on the protruding edge
should protect the valve disc from damage.

Ö Do not place any objects on the butterfly valve.

Ö Install the butterfly valve in the pipe, see chapter 5.4
Ö After installation in the pipe: check that the flanges are firmly
tightened and that the butterfly valve holds in the pipe.
Ö Remove the lifting slings.

4.4 Storing the butterfly valve
NOTE
Damage to the butterfly valve due to improper storage!
− Comply with the storage conditions.
− Avoid long storage periods.
− In the case of deviating storage conditions and a longer storage period, contact PFEIFFER.

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

Ö In the case of storage prior to installation, the valve should
normally be stored in a closed room where it is protectedagainst harmful influences such as impacts, dirt or moisture.
A room temperature of 25 °C ±15 °C is recommended.
Ö In particular, the actuator and the ends of the butterfly valve
to the pipe connection may not be damaged by mechanicalor any other influences.
Ö Do not stack the butterfly valves.
Ö Prevent condensation in damp rooms. Use a desiccant orheater.
Ö The butterfly valve must be stored in its protective packaging
and/or with the protective caps on the connection ends.
Ö Butterfly valves that weigh more than approx. 10 kg should
be stored on a pallet (or supported similarly).
Ö Butterfly valves are usually delivered in a closed position.
They must be stored in the position in which they were delivered. The actuating device must not be actuated.

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4-3Shipment and on-site transport

4-4

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Installation

5

Installation

5.2 Preparing for assembly

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

Butterfly valves must be handled, transported and stored withcare, see Chapter “4 Delivery and on-site transport”.

The following instructions apply additionally for butterfly valves.
Observe chapter “4.3 Transporting and lifting the butterfly valve”
for transport to the installation site.

Perform the following steps after receiving the goods:

5.1 Installation conditions

Ö Check the supply for transport damage. Report transport
damage to PFEIFFER and the transport company (see the delivery note).

Operator level
The operator level for the butterfly valve is the front view on all
operating elements of the butterfly valve including the attachments from the perspective of operating personnel.
The plant operator must make sure that operating personnel can
carry out all work after the device is installed safely and can access it easily from the operator level.
Pipe routing
The guidelines applicable on site apply for the installation of
BR 14p - type PSA butterfly valves in the pipe.
Install the butterfly valve such that there is low vibration and no
mechanical stress. Observe the sections “Installation orientation”
and “Support and mounting” in this chapter.
Install the butterfly valve so there is enough space to replace theactuator and butterfly valve as well as to perform maintenancework.
Installation position
The preferred installation position is with the control shaft horizontal. The actuator should not be located directly below the butterfly valve, if possible.
Ö In the case of deviations from this installation position, contact PFEIFFER.
Support and mounting
The plant manufacturer is responsible for the selection and implementation of a suitable support or mounting for the installed butterfly valve as well as the pipe.
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 Carry out venting on the side that faces away from the operator level.
Ö When connecting the attachments, make sure that they canbe accessed from the operator level safely and easily.

EB 14p_EN
March 2024 edition
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Ö Check the scope of supply. Compare the delivered goods
with the delivery note.

Ensure the following conditions prior to assembly:− The butterfly valve is clean.
− The butterfly valve data on the type plate (type, nominal size,
material, nominal pressure and temperature range) matches
the plant conditions (nominal size and nominal pressure of
the pipe, medium temperature, etc.). For details about themarking, see Chapter “2 Markings on the device”.
− Desired or required additional fittings, see Chapter “3.2 Additional fittings”, are installed or prepared as far as necessary
before the assembly of the butterfly valve.

5.3 Assembling the butterfly valve and actuator
PFEIFFER butterfly valves are supplied in working order. In individual cases, the actuator and butterfly valve are delivered separately and must be assembled. The tasks are listed below that arenecessary for assembly and prior to the commissioning of thebutterfly valve.
WARNING
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.
Danger and damage due to use of an electrical actuator!
Ö It must be made sure that the valve in the “CLOSED” position
is turned off by the signal of the torque switch.
Ö In the “OPEN” position, the butterfly valve must be turned off
by the limit switch.
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 manual.
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.

5-1Installation

WARNING
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 to the butterfly valve due to the incorrect actuator
assembly!
Double eccentric butterfly valves must always be closed clockwise!
Ö Observe the turning direction when assembling an actuator.
Ö The turning direction is indicated on the butterfly valve by asign, see Fig. 5-1.
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.
Ö The adjustment of the “OPEN” and “CLOSED” end stops isthe responsibility of the user.

DANGER
Danger due to exceeding the limits of use!
Exceeding the limits of use can pose a danger to the user andcause damage to the pipe system.
Ö No butterfly valve may be installed whose permissible pressure/temperature range is not sufficient for the operating
conditions.
Ö The max. permissible limits of use are marked on the butterfly
valve, see Chapter “2 Markings on the device”.
Ö The permissible range is defined in Chapter “1 Safety instructions and safety measures”.

Ö The connection ends of the pipe must align with the butterfly
valve connections and have plane-parallel ends.
Ö The connection data for the actuator unit must match the control data. See the type plate(s) on the actuator unit.
Ö Prior to installation, the butterfly valve and the connectedpipe must be carefully cleaned of any contamination, in particular solid foreign matter.
Ö The sealing surfaces on the flange connection and the utilizedflange seals must in particular be free of all contamination
during installation.
Ö An arrow is marked on the body. The direction of the arrowmust correspond to the direction of flow in the pipe.
Info
It may be necessary in special cases for a butterfly valve to betight against the direction of flow.
For installation in these special cases, contact PFEIFFER as this
could lead to an excessive strain on the seat ring, washer, etc.

Fig.|5-1:

Turning direction notice sign

5.4 Installing the butterfly valve in the pipe
5.4.1

GeneralÖ Transport the valve in its original packaging to the installationsite and unpack it only there.
Ö Inspect the butterfly valve and actuator for transport damage.
Damaged butterfly valves or actuators may not be installed.
Ö Handle the butterfly valve with care and observe the instructions for the flange connection.
Ö Make sure that only butterfly valves are installed whose pressure classes, connection type (flow rate), type of lining andconnection dimensions match the conditions of use. See thecorresponding marking on the butterfly valve.
Ö The counterflanges must have smooth sealing surfaces. Other
flange shapes must be agreed upon with PFEIFFER.

Ö When pushing the butterfly valve and the required flange
seals into an already assembled pipe, the distance between
the pipe ends must be measured such that all contact surfacesof the butterfly valve and seals remain undamaged.
NOTE
Damage to the sealing surfaces and seals or untight flange
connection due to improper assembly!
Ö Tighten the flange connections evenly and in a criss-crosspattern with the torques indicated in Table 15-6.

Ö After a long storage period, retighten the body screws according to the specifications in chapter “15.1.1. Tightening
torques”.
Ö Vents are screwed into the exhaust air connections of pneumatic and 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).

5-2

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Installation

Ö Carry out venting on the side that faces away from the working area of operating personnel.

=

Ö When installing peripheral devices, make sure that they canbe operated from the working area of operating personnel.

Observe the following for butterfly valves with a metal seat:
To avoid damaging the seat seal, make sure that the pipe connected upstream and downstream of the butterfly valve is cleaned
carefully of all rigid and abrasive particles prior to installation.

NOTE
Damage to the valve due to improper installation!
The valve disc could be damaged and the butterfly valve couldleak.
Ö Push the butterfly valve with a closed valve disc into the gap
between the pipe flanges.
Ö The inside diameter of the counterflange must leave enoughspace for the opened valve disc so that it is not damaged
when swinging out, see Table 5-1.

Info

Ö Check the correct function of the butterfly valve.

5.5 Checking the assembled butterfly valve
5.5.1

Functional test

WARNING
Table|5-3: Minimum required inner diameter Di of the counterflange
Nominal size
DN

NPS

ØDi

Danger of crushing due to moving actuator- and control shaft!
Ö Do not reach into the yoke as long as the pneumatic power isconnected to the actuator.
Ö Before working on the butterfly valve, interrupt and lockpneumatic energy and the control signal.

ØDi2
Row 16

80

3

54

-

Ö Vent the actuator.

100

4

78

-

150

6

128

118

Ö Do not allow the jamming of objects in the yoke to hinder theoperation of the actuator- and control shaft.

200

8

180

166

250

10

227

217

300

12

276

260

350

14

308

301

400

16

365

348

5.4.2

Fig.|5-2:

In diameter

Installing the butterfly valve

Ö Close the butterfly valve in the pipe for the duration of the installation.
Ö Remove the protective caps on the valve openings prior to installation.
Ö Lift the butterfly valve with suitable lifting equipment at the installation site, see chapter “4.3 Transporting and lifting thebutterfly valve”. When doing so observe the flow direction of
the butterfly valve. An arrow on the butterfly valve indicatesthe flow direction.
Ö Make sure that the correct flange seals are used.
Ö Screw the pipe together with the butterfly valve without tension.
Ö After installation, open the butterfly valve slowly in the pipe.
NOTEÖ If the actuator- and control shaft are blocked (e.g. due to“seizure” if not actuated for a long period of time”), release
the residual energy of the actuator (spring tension) before releasing the blockage, see the corresponding actuator documentation.
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 and, if necessary, hearing protection
when working near valves.

Ö At the end of installation, perform a functional test with thecontrol signals:
The butterfly valve must close and open correctly according to
the control commands. Detected malfunctions must be fixed
before commissioning, see Chapter “8 Malfunction”.
WARNING
Danger due to improperly executed control commands!
Incorrectly executed control commands can cause serious injuries
or even death and cause damage to the pipe system.
Ö Check the actuator unit and control command., see chapter“8 Malfunction”.

Damage to the butterfly valve due to a sudden pressure increase and resulting high flow speed!
Open the butterfly valve slowly in the pipe during commissioning.

EB 14p_EN
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5-3Installation

5.5.2

Pressure test of the pipe section

The pressure test was already performed on the butterfly valves
by PFEIFFER. Observe the following for the pressure test of a pipe
section with installed butterfly valves:Ö First carefully rinse newly installed pipe systems in order towash out all foreign matter.
Ö Ensure the following conditions for the pressure test:–

Valve open: The test pressure may not exceed the value
1.5 x PN (according to the type plate).

–

Valve closed: The test pressure may not exceed the value
1.1 x PN (according to the type plate).

If a butterfly valve leaks, observe chapter “8 Malfunction”.
Info
The plant operator is responsible for performing the pressure test.
After Sales Service at PFEIFFER can provide you with support forthe planning and implementation of a pressure test specific toyour plant.

5.5.3

Rotary movement

The rotary movement of the actuator- and control shaft must be
linear without any jerky movements.
Ö Open and close the butterfly valve. When doing so, observe
the movement of the actuator shaft.
Ö Set the maximum and minimum control signal in succession
to check the end positions of the butterfly valve.
Ö Check the display on the position indicator.

5.5.4

Fail-safe position

Ö Close the signal pressure line.
Ö Check whether the butterfly valve moves to the fail-safe position, see Chapter “Fail-safe positions in Chapter “3 Design
and principle of operation”.

5-4

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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

Commissioning/recommissioningÖ Open the butterfly valve slowly in the pipe. Opening slowly
prevents a sudden increase in pressure and a resulting highflow speed that damages the butterfly valve.
Ö Check the correct function of the butterfly valve.

Danger of burning due to hot or cold components and pipe!
Valve components 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 Do not loosen the screw of an optional test connection while
the butterfly valve is pressurised.
Danger of crushing due to moving actuator- and control shaft!
Ö Do not reach into the yoke as long as the pneumatic power isconnected to the actuator.
Ö Before working on the butterfly valve, interrupt and lockpneumatic energy and the control signal.
Ö Vent the actuator.
Ö Do not allow the jamming of objects in the yoke to hinder theoperation of the actuator- and control shaft.
Ö If the actuator- and control shaft are blocked (e.g. due to“seizure” if not actuated for a long period of time”), release
the residual energy of the actuator (spring tension) before releasing the blockage, see the corresponding actuator documentation.
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 and, if necessary, hearing protection
when working near valves.

Ensure the following conditions prior to commissioning/recommissioning:− The BR 14p - type PSA butterfly valve is installed properly inthe pipe, see Chapter “5 Assembly”.
− The leak and function tests have been completed successfully,
see Chapter “5.1 Installation conditions”.
− No residual amounts of water are present in the flow sectionof the valve to prevent a possible reaction with the medium.
− The current conditions in the concerned plant section correspond to the design of the butterfly valve, see Intended use in
Chapter “1 Safety instructions and safety measures”.

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6-1

Start-up

6-2

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Operation

7

Operation

As soon as the commissioning/recommissioning work is complete, see Chapter “6 Commissioning”, the butterfly valve isready for operation.

− For the manual operation or manual override of the actuator(if present), normal manual forces are sufficient and the useof extensions to increase the actuation torque is not permitted.
− If a butterfly valve leaks, observe chapter “8 Malfunction”.

WARNING
Danger of burning due to hot or cold components and pipe!
Valve components 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 Do not loosen the screw of an optional test connection while
the butterfly valve is pressurised.
Danger of crushing due to moving actuator- and control shafts!
Ö Do not reach into the yoke as long as the pneumatic power isconnected to the actuator.
Ö Before working on the butterfly valve, interrupt and lockpneumatic energy and the control signal.
Ö Vent the actuator.
Ö Do not allow the jamming of objects in the yoke to hinder theoperation of the actuator- and control shaft.
Ö If the actuator- and control shaft are blocked (e.g. due to“seizure” if not actuated for a long period of time”), release
the residual energy of the actuator (spring tension) before releasing the blockage, see the corresponding actuator documentation.
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 and, if necessary, hearing protection
when working near valves.

Observe the following points during operation:− After commissioning and reaching the operating temperature, it may be necessary to retighten all flange connections
between the pipe and butterfly valve with the correspondingtightening torques, see Table 15-6 in Chapter “15.1.1 Tightening Torques”.
− It may also be necessary to tighten the screw connections of
the body parts according to the respective specifications inchapter “15.1.1 Tightening torques”.
− The butterfly valve/actuator unit must be actuated with thecontrol signals.
− Butterfly valves that were delivered from the factory with anactuator are precisely adjusted. The user is responsible forany changes they make.

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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

Possible cause

MeasuresLeaks in the pipe connection

The flange connection of thebutterfly valve is leaky

Tighten the flange screws:
NOTE
An excessive tightening torque when retightening the flange screws
can damage the butterfly valve and pipe!
The permissible torque for retightening the pipe flange screws is limited.
Retighten the flange connection with the respective tightening torque,see Table 15-6 in Chapter “15.1.1 Tightening torques”.
If necessary, increase the tightening torque to max. 20%.

The flange connection is still
leaky after retightening

Loosen the flange connection and remove the butterfly valve, seechapter “1 Safety instructions and safety measures“.
Check the plane parallelism of the flange connection and correct if it is
not sufficient.
Check the flange seals: if the seals are damaged, replace them.

Leakage on the bonnet

Connection of the bonnet tothe valve body released

Retighten the bonnet screws.

Bonnet still untight after
retightening

Replace the cover sealing and/or butterfly valve, see chapter “1 Safety instructions and safety measures“.

Leaks in the control shaft seal- Medium escapes
ing

DANGER
Danger of injury due to escaping medium!
To protect operating personnel from danger, depressurise the line on
both sides of the butterfly valve, see Chapter “1 Safety instructions
and safety measures”.

Medium escapes from the
stuffing box flange

Remove the butterfly valve, see chapter “1 Safety instructions andsafety measures”.
Disassemble the butterfly valve and replace the control shaft sealing.
Request spare parts from PFEIFFER, see Chapter “15.2 Spare parts”.
For the required repair instructions, see Chapter “12 Repairs”.

Increased medium flow ratewith the butterfly valved
closedLeakage in the closed position Close the butterfly valve 100%.
If the butterfly valve is in the closed position, check if the actuator closes with full torque.
If the actuator closes with full torque, open/close the butterfly valve
when pressurised multiple times.
If the butterfly valve is still leaky, increase the tightening torque of theactuator in the “CLOSED” position up to maximum 1.1 x the nominal
torque.
If the butterfly valve is still leaky, it could be damaged.
The butterfly valve is damaged

Repairs are necessary.
Remove the butterfly valve, see chapter “1 Safety instructions andsafety measures”.
Request spare parts from PFEIFFER, see Chapter “15.2 Spare parts”.
For the required repair instructions, see Chapter “12 Repairs”.

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8-1Malfunction

Type of fault

Possible cause

MeasuresMalfunction

The actuator unit or control
does not react

Check the actuator unit and control command.

The actuator and control are
OK

Remove and inspect the butterfly valve, see chapter “1 Safety instructions and safety measures”.

The butterfly valve is damaged

Repairs are necessary.
Remove the butterfly valve, see chapter “1 Safety instructions andsafety measures”.
Request spare parts from PFEIFFER, see Chapter “15.2 Spare parts”.
For the required repair instructions, see Chapter “12 Repairs”.

Problems in the actuator unit

The pneumatic actuator must
be removed

Disconnect the connection to the control pressure.
Remove the actuator from the butterfly valve, observe the “Safety instructions and safety measures”, see the included actuator unit manuals.

Info− In the case of faults that are not listed in the table, contact theAfter Sales Service at PFEIFFER.
− Spare parts must be ordered indicating all the data according
to the valve marking. Only original parts from PFEIFFER Chemie-Armaturenbau GmbH may be installed.
− If it is determined after removal that the butterfly valve material
lining is not sufficiently resistant for the medium, parts must be
selected made of a suitable material.

8.2 Carrying out emergency measures
In the case of a power supply failure, the butterfly valve automatically switches to the preset fail-safe position, (see “Fail-safe positions” in Chapter “3 Design and principle of operation”.
The system operator is responsible for emergency measures.
In case of a butterfly valve fault:− Close the shut-off valves upstream and downstream of thebutterfly valve so that no medium flows through the butterfly
valve.
− Troubleshoot the error, see chapter “8.1 Detecting and revtifying errors”.
− Rectify the fault that can be fixed as indicated in the instructions provided in this installation and operating manual. For
faults that cannot be fixed, contact the After Sales Service at
PFEIFFER.
Recommissioning after faults
See Chapter “6 Commissioning”.

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 may also be required for the maintenance of the butterfly valve:− Installation and operating manual for the installed actuator,
e.g.  EB 30a for diaphragm rotary actuators BR 30a,
 EB 31a for rotary actuators BR 31a or the corresponding
actuator documentation of other manufacturers.
WARNING
Danger of burning due to hot or cold components and pipe!
Valve components 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 Do not loosen the screw of an optional test connection while
the butterfly valve is pressurised.
Danger of crushing due to moving actuator- and control shaft!
Ö Do not reach into the yoke as long as the pneumatic power isconnected to the actuator.
Ö Before working on the butterfly valve, interrupt and lockpneumatic energy and the control signal.
Ö Vent the actuator.
Ö Do not allow the jamming of objects in the yoke to hinder theoperation of the actuator- and control shaft.
Ö If the actuator- and control shaft are blocked (e.g. due to“seizure” if not actuated for a long period of time”), release
the residual energy of the actuator (spring tension) before releasing the blockage, see the corresponding actuator documentation.
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 and, if necessary, hearing protection
when working near valves.
Danger of injury due to preloaded springs!
Actuators with preloaded actuator springs are pressurised.
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 can escape and, depending on the medium properties, cause injuries(e.g. scalding, chemical burns).
Ö Wear protective garments, protective gloves and eye protection.

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NOTE
Damage to the butterfly valve due to excessively high or low
tightening torques!
The butterfly valve components must be tightened with specifictorques. Excessively tightened components are subject to increased wear. Insufficiently tightened components can cause
leakage.
Ö Observe the tightening torques, see Chapter “15.1.1 Tightening torques”.
Damage to the butterfly valve due to unsuitable tools!
Ö Only use tools approved by PFEIFFER, see Chapter “15.1.3
Tools”.
Damage to the butterfly valve due to unsuitable lubricants!
Ö Only use lubricants approved by PFEIFFER, see Chapter“15.1.2 Lubricants”.

Info
The butterfly valve was checked by PFEIFFER prior to delivery.
− Certain test results certified by PFEIFFER are no longer valid
when disassembling the butterfly valve. This includes the test forseat leakage and the leak test (outer tightness).
− If maintenance and repair work is performed without approval
from the After Sales Service of PFEIFFER, the product guarantee
will be voided.
− Only use original parts from PFEIFFER as spare parts that correspond to the original specification.
− Wear parts are not covered by the warranty.

9.1 Periodic tests
Ö Depending on the conditions of use, the butterfly valve must
be checked at defined intervals in order to take remedial
measures prior to possible malfunctions. The plant operator is
responsible for preparing a suitable test plan.
Ö PFEIFFER recommends the following inspections that can be
carried out during operation:

Test

Measures in the case of a negative test
resultIf present, check the optional
test connection for tightness.
WARNING! Danger of injury due to pressurised components and escaping medium! Do not loosen the test
connection while the butterfly valve is pressurised.

Decommission the butterfly valve, seechapter “10 Decommissioning”.
Contact the After Sales Service at
PFEIFFER for repairs, See chapter “12Repairs“.

Check the control shaft sealing for tightness from theoutside.

The control shaft sealing with a PTFE
V-ring packing is preloaded with a discspring set and is therefore maintenance
free.

9-1

Servicing

Test
Check the rotary movementof the actuator- and control
shaft for smooth movement.

If possible, check the failsafe position of the butterfly
valve by briefly interrupting
the power supply.

Measures in the case of a negative test
result

9.3 Ordering spare parts and consumables

Tighten the packing correctly.

Information about spare parts, lubricants and tools can be received from the After Sales Service at PFEIFFER.

If the actuator- and control shaft areblocked, remove the blockage.
WARNING! If the actuator- and control
shaft are blocked (e.g. due to “seizure” if
not actuated for a long period of time)they can release unexpectedly and move
uncontrolled. This can lead to crushing if
reaching into them.
Before trying to release a blockage ofthe actuator- and control shaft, interrupt
and lock the pneumatic energy and thecontrol signal. Release the residual energy of the actuator (spring tension orcompressed air reservoir) before releasing the blockage, see the corresponding
actuator documentation.

Spare parts
Information on spare parts can be found in Chapter “15.2 Spareparts“.

Decommission the butterfly valve, seechapter “10 Decommissioning”. Then determine the cause and remedy it, see
Chapter “8 Malfunctions“.

Check pipe connections and Regular maintenance work on the butterseals of the butterfly valve
fly valve is not necessary, but when
and actuator for leaks.
checking the pipe section, no medium
may escape from the flange and screw
connections of the body or from the control shaft sealing.

9.2 Maintenance workÖ The butterfly valve must be prepared before all maintenancework, see Chapter “12 Repairs”.
Ö After all maintenance work, the butterfly valve must be
checked prior to recommissioning, see Chapter “5.5 Checking the mounted butterfly valve”.

9.2.1

Replacing the seat ring

Ö Check the condition of the seat ring.
Ö Remove the seat ring (14) as described in Chapter “12.2 Replacing the seat ring”.
Ö Check the seat ring as well as all plastic parts for damage
and if in doubt replace them.

9.2.2

Replace seat ring and valve disc ring

Ö Check the condition of the valve disc ring seat ring.
Ö Remove the seat ring (14) and valve disc ring as described in
Chapter “12.3 Replacing the seat ring and the valve discring”.
Ö Check the seat ring and the valve disc ring as well as allplastic parts for damage and if in doubt replace them.

9-2

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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.
WARNING
Danger of burning due to hot or cold components and pipe!
Valve components 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.

To decommission the butterfly valve for maintenance and repair
work or for disassembly, perform the following steps:
Ö Close the valves upstream and downstream of the butterfly
valve so that no medium flows through the butterfly valve.
Ö Empty the pipe and butterfly valve completely.
Ö Shut off the pneumatic power and lock it, to depressurise thebutterfly valve.
Ö Let the pipe and butterfly valve components cool down or
warm up.

Danger of injury due to pressurised components and escaping
medium!
Ö Do not loosen the screw of an optional test connection while
the butterfly valve is pressurised.
Danger of crushing due to moving actuator- and control shaft!
Ö Do not reach into the yoke as long as the pneumatic power isconnected to the actuator.
Ö Before working on the butterfly valve, interrupt and lockpneumatic energy and the control signal.
Ö Vent the actuator.
Ö Do not allow the jamming of objects in the yoke to hinder theoperation of the actuator- and control shaft.
Ö If the actuator- and control shaft are blocked (e.g. due to“seizure” if not actuated for a long period of time”), release
the residual energy of the actuator (spring tension) before releasing the blockage, see the corresponding actuator documentation.
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 and, if necessary, hearing protection
when working near valves.
Danger of injury due to residual medium in the butterfly valve!
When working on the butterfly valve, residual medium can escape and, depending on the medium properties, cause injuries(e.g. scalding, chemical burns).
Ö Wear protective garments, protective gloves and eye protection.
Ö Do not loosen the screw of an optional test connection while
the butterfly valve is pressurised.

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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.
WARNING
Danger of burning due to hot or cold components and pipe!
Valve components 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 crushing due to moving actuator- and control shaft!
Ö Do not reach into the yoke as long as the pneumatic power isconnected to the actuator.
Ö Before working on the butterfly valve, interrupt and lockpneumatic energy and the control signal.
Ö Vent the actuator.
Ö Do not allow the jamming of objects in the yoke to hinder theoperation of the actuator- and control shaft.
Ö If the actuator- and control shaft are blocked (e.g. due to“seizure” if not actuated for a long period of time”), release
the residual energy of the actuator (spring tension) before releasing the blockage, see the corresponding actuator documentation.
Danger of injury due to residual medium in the butterfly valve!
When working on the butterfly valve, residual medium can escape and, depending on the medium properties, cause injuries(e.g. scalding, chemical burns).
Ö Wear protective garments, protective gloves and eye protection.
Ö Do not loosen the screw of an optional test connection while
the butterfly valve is pressurised.

11.1 Removing the butterfly valve from thepipeÖ Loosen the flange connection.
Ö Remove the butterfly valve from the pipe, see Chapter “4.3Transporting and lifting the butterfly valve”.
WARNING
If a used valve is sent to PFEIFFER for service:
The valves must be decontaminated 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 thecontamination of PFEIFFER valves and components”.
− This form is available at  www.pfeiffer-armaturen.com.

11.2 Disassembling the actuator
See the corresponding actuator documentation.

Danger of injury due to preloaded springs!
Actuators with preloaded actuator springs are pressurised.
Ö Before working on the actuator, release the compression fromthe preloaded springs.

Prior to disassembly, make sure that the following conditions aremet:− The butterfly valve is decommissioned, see chapter “10 Decommissioning”.

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11-1Removal

11-2

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Repairs

12 Repairs
If the operation of the BR 14p - Typ PSA butterfly valve is nolonger compliant or if it does not work at all, it is defective andmust be repaired or replaced.
NOTE
Damage to the butterfly valve due to improper maintenanceand repair!
Ö Do not perform maintenance and repair work on your own.
Ö Contact the After Sales Service at PFEIFFER for maintenanceand repair work.

Ö Place the butterfly valve on an even and clean work surface
so that the seat ring is easy to reach.
Ö Loosen the screws (24) and remove the fastening ring (9).
Ö Remove the seat ring (14).
Ö Check the seat ring as well as all plastic and graphite partsfor damage and, in the case of doubt, replace them.
Info
It is essential to pay attention to cleanliness during assembly.

Ö Assemble the valve as described in Chapter “3.5 Butterfly
valve assembly”.

In special cases, certain maintenance and repair work may be
performed.
The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.

12.2.1 Replacing the seat ring in butterfly
valves from DN|400 (NPS16)

The following instructions apply additionally for butterfly valves.
For decommissioning and disassembly, observe Chapter “10 Decommissioning” and “11 Disassembly”.

Ö Place the butterfly valve on an even and clean work surface
so that the seat ring is easy to reach.

12.1 Replacing the V-ring packing

Ö Remove the PTFE seat ring (4) or the metal seat ring including
the corresponding graphite rings (4).

If a leak is found in the stuffing box (8), the PTFE rings of the
V-ring packing (15) could be defective.

Ö Check the seat ring as well as all plastic and graphite partsfor damage and, in the case of doubt, replace them.

Ö Loosen the screws (26) and disassemble the fastening ring(5).

Ö Check the condition of the packing.
Disassemble the butterfly valve to remove the packing. For thispurpose, observe Chapter “1 Safety instructions and safetymeasures”.
Ö Place the butterfly valve on an even and clean work surface
so that the packing space is easy to reach.
Ö Loosen the screws (27) and remove the stuffing box flange (8)carefully.
Ö Remove the disc springs from the disc spring set (13).
Ö Remove the V-ring packing (15).
Ö Check the PTFE rings of the V-ring packing as well as allplastic and graphite parts for damage and, in the case of
doubt, replace them.
Ö Assemble the butterfly valve as described in Chapter “3.5
Butterfly valve assembly”.

12.2 Replacing the seat ringIf a leak is found in the passage of the butterfly valve, the seatring (14) could be defective.
Ö Check the condition of the seat ring.
Disassemble the butterfly valve to remove the seat ring. For thispurpose, observe Chapter “1 Safety instructions and safetymeasures”.

EB 14p_EN
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Info
It is essential to pay attention to cleanliness during assembly.

Ö Assemble the valve as described in Chapter “3.5 Butterfly
valve assembly”.

12.3 Replacing the seat ring and the valve discring
If a leak is found in the passage of the butterfly valve, the valve
disc ring (5) may also be defective in addition to the seat ring(14).
Ö Check the condition of the seat ring and the valve disc ring.
Disassemble the butterfly valve to remove these components. For
this purpose, observe Chapter “1 Safety instructions and safetymeasures”.
Ö Remove the seat ring (14) as described in chapter “12.2 Replacing the seat ring”. Check the seat ring and all plastic
parts for damage and replace if necessary.
Ö Loosen the screws (25) and carefully remove the valve discring (5). Check the valve disc ring and all plastic parts fordamage and replace if necessary.

12-1

Repairs

Fig.|12-1: BR 14p - TYP PSA Butterfly valve

Table 12-4: List of parts
Item

Description

Item

Description

Item

1

Valve body

11

Bearing bush21

O-ring2

Control shaft

12

Distance bush22

O-ring3

Shaft head

13

Disc spring set

23

Ring

4

Valve disc

14

Seat ring

24

Screw

5

Valve disc ring

15

V-ring packing

25

Screw

6

Intermediate flange

16

Disc

26

Screw

7

Bonnet

17

Disc

27

Screw

8

Stuffing box flange

18

Disc

28

Grooved pin

9Fastening ring

19

Ring

29

Screw

10

Bearing bush20

O-ring

30

Screw

12-2

Description

EB 14p_EN
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Repairs

12.4 Disconnecting the valve disc/valve shaft
connection

Tip− PFEIFFER recommends documenting the following contamination data in the form  FM 8.7-6 “Declaration regarding thecontamination of PFEIFFER valves and components”.
− This form is available at  www.pfeiffer-armaturen.com.

Ö Include the following information for returns:− Manufacturer number− Butterfly valve type
− Article number− Nominal size and version of the butterfly valve− Manual valve/automated valve− Medium (designation and consistency)
Fig.|12-2: Disconnect shaft/disc connection− Medium pressure and temperature− Flow rate in m³/h
− Bench range of the actuator

Info
In order to check the packing (15), the bearing bushes(46 and 47) or other plastic parts and replace them if necessary,it may be necessary to disconnect the connection between thevalve disc (4) and the control shaft (2).

− Number of actuations (year, month, week or day)− Installation drawing if available− Completed declaration regarding contamination. This
form is available at  www.pfeiffer-armaturen.com.

Ö Drill out the grooved pins (28) for disconnecting the connection between the valve disc (4) and valve shaft (2) and cut asuitable internal thread.
Ö Pull the grooved pins (28) using a slide hammer, seeFig. 12-1.
Ö Alternatively, drill out the grooved pins (28)12.5 Additional repairs
Ö In the case of additional major damage, it is recommended
to have repairs performed by PFEIFFER.

12.6 Sending devices to PFEIFFER
Defective butterfly valves can be sent to PFEIFFER for repair.
Proceed as follows to send devices:
WARNING
Danger due to contaminated valves!
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.

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12-3Repairs

12-4

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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 for automated valves, see page 14-2.
− Declaration of conformity according to Pressure Equipment
Directive 2014/68/EU for manually operated valves, seepage 14-3.
− Declaration of conformity for completed machinery according
to Machinery Directive 2006/42/EC for butterfly valve
BR 14p - type PSA, see page 14-4.
− Declaration of installation for partly completed machinery
according to Machinery Directive 2006/42/EC for butterfly
valve BR 14p - type PSA, see page 14-5
The printed certificates correspond to the status at the time ofprinting. Further optional certificates are available upon request.

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March 2024 edition
Subject to technical changes

14-1

Certificates14-2

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Certificates

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14-3Certificates14-4

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Certificates

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14-5

Certificates14-6

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Annex

Table|15-2: Intermediate flange tightening torques

15 Annex

Nominal size

15.1 Tightening torques, lubricant and tools
15.1.1 Tightening torques
Info
The tightening torques stated in the tables can only be understood as very rough and non-binding guide values and refer to acoefficient of friction of 0.2μ. Lubricating the threads leads to indeterminate tightening conditions.
1)

15.1.1.1 Stuffing box flange

DN

NPS

80

3

cl150

-

3

cl300

100

4

cl150

-

4

cl300

150

6

cl150

-

6

cl300

200

8

cl150

-

8

cl300

250

10

cl150

-

10

cl300

300

12

cl150

For the assembly of the stuffing box flange, the screw connections
are tightened in a criss-cross pattern with the tightening torques
indicated below.

-

12

cl300

350

14

cl150

-

14

cl300

Table|15-1: Stuffing box flange tightening torques

400

16

cl150

-

16

cl300

Nominal size
DN

NPS

80

3

cl150

-

3

cl300

100

4

cl150

Qty.

Thread (27)Tightening
torque 1) 2)

4

cl300

6

cl150

-

6

cl300

200

8

cl150

-

8

cl300

DN

250

10

cl150

80

3

cl150

-

10

cl300

-

3

cl300

300

12

cl150

100

4

cl150

4

cl300

Table|15-3: Bonnet tightening torques
Nominal size
NPS

-

12

cl300

-

350

14

cl150

150

6

cl150

-

14

cl300

-

6

cl300

400

16

cl150

200

8

cl150

-

16

cl300

-

8

cl300

250

10

cl150

15.1.1.2 Intermediate flange
For the assembly of the intermediate flange, the screw connections are tightened in a criss-cross pattern with the tightening torques indicated below.

EB 14p_EN
March 2024 edition
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Tightening
torque 1)

For the assembly of the bonnet, the screw connections are tightened in a criss-cross pattern with the tightening torques indicatedbelow.

-

Tighten the stuffing box flange screws until the bushing lies on
the dome.

Thread (30)15.1.1.3 Bonnet

150

2)

Qty.

-

10

cl300

300

12

cl150

-

12

cl300

350

14

cl150

-

14

cl300

400

16

cl150

-

16

cl300

Qty.

Thread (26)Tightening
torque 1)

15-1

Annex15.1.1.4 Valve disc ring

15.1.1.6 Flange connections

For the assembly of the valve disc ring, the screw connections aretightened in a criss-cross pattern with the tightening torques indicated below.
Table|15-4: Valve disc ring tightening torques
Nominal size
DN

NPS

80

3

cl150

-

3

cl300

Qty.

Thread (25)Tightening
torque 1)

Info
Required tightening torques for assembly for flanges according to
DIN EN 1092-1 type 11 and connecting elements (e.g. screws,
threaded pins) made of 25CrMo4 / A2-70 or a comparable
strength.
The values are taken from the “Guidelines for assembly of flange
connections in processing plants” of the VCI (Verband derChemischen Industrie e.V.).

100

4

cl150

-

4

cl300

150

6

cl150

-

6

cl300

200

8

cl150

-

8

cl300

250

10

cl150

-

10

cl300

40

300

12

cl150

10

-

12

cl300

350

14

cl150

-

14

cl300

10

400

16

cl150

16

-

16

cl300

Table|15-6: Required tightening torques
DN
[mm]

PN
[bar]

M16

125 4)

80

M16

125 4)

80

M20

240 5)

150

M20

240 5

150

M24

340

200

II

M20

240 5)

150

I

25

M24

340

200

40

M27

500

250

10

M20

240 5)

150

16

M24

340

200

M27

500

250

10

M20

240 5)

150

16

M24

340

200

25

M27

500

250

M30

700

300

10
80

100

16
25

16
25
40

150

15.1.1.5 Fastening ring200

For the assembly of the fastening ring, the screw connections aretightened in a criss-cross pattern with the tightening torques indicated below.
250

Table|15-5: Fastening ring tightening torques

25

16

25
40

80

NPS
3

Qty.

Thread (24)Tightening
torque 1)
300

cl150

-

3

cl300

40

100

4

cl150

10

M20

240 5)

150

16

M24

340

200

25

M30

700

300

40

M33

900

500

10

M24

340

200

16

M27

500

250

25

M33

900

500

40

M36

1200

750

-

4

cl300

150

6

cl150

-

6

cl300

200

8

cl150

-

8

cl300

250

10

cl150

-

10

cl300

300

12

cl150

-

12

cl300

350

14

cl150

-

14

cl300

400

16

cl150

-

16

cl300

15-2

Tightening
method 6)

B

10

DN

Tightening torques [Nm]for sealing units 3)
A

40

Nominal size

Thread

350

400

I

II
I
II
I
II
I

II

These tightening torques were calculated by the company BASF SE
and confirmed by partner companies.
4)
Recommended lever length 300 mm.
5)Recommended lever length 550 mm.
6)I) With manually-operated spanner with a suitable extension if
necessary.
II) With a torque wrench or other torque-controlled procedure.
3)

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March 2024 edition
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Annex

Table|15-7: Sealing unit A
Seal

15.2 Spare parts

Nominal pressure

Description

PN 10 to PN 25

Without inner eyelet

PN 40

With inner eyelet

Flat seal

PFEIFFER recommends spare part sets for “Commissioning” andfor “2-year operation”, see Chapter “15.2.1 Spare parts for
BR 14p - type PSA butterfly valve.

Shaft ring seals PN 40 are covered by this.
Flat seals with inner eyelet for PN 10 - 25 are already covered, providing that the required characteristic values are complied with.

Table|15-8: Sealing unit B
Seal

Nominal pressure

Seal for tongue andgroove flanges
PN 10 to PN 40

Grooved gasket

Description
With fibre gaskets andmetal-reinforcedgraphite gaskets

Spiral gasket withgraphite-

15.1.2 Lubricant
Table|15-9: Recommended lubricant
Use

Temperature range

LubricantScrews and nuts

-10 ... +200°C

Heavy-duty grease paste (e.g.
Gleitmo 805, manufacturer
Fuchs)
Not suitable for grease-freebutterfly valves or for use withoxygen15.1.3 Tools
Recommended tools
Suitable tools are required to work on the butterfly valve. Unsuitable tools can damage the butterfly valve.

EB 14p_EN
March 2024 edition
Subject to technical changes

15-3Annex15.2.3.1 Spare parts for BR 14p - type PSA butterfly valve

Fig.|15-1: Exploded drawing of the BR 14p - Typ PSA Butterfly valve

15-4

EB 14p_EN
March 2024 edition
Subject to technical changes

Annex

Table|15-10: Recommended spare parts for the BR 14p - type PSA butterfly valve
Material
Item

Spare parts kit

Description
DIN

ANSI

commissioning

2 year operation

1

Valve body

1.06191.4408

A216 WCB
A351 CF8M

2

Control shaft

1.4542
1,4542-H1150(AISI 630
A564 Typ 630 P930•

3

Shaft head

1.4542
1.4542-H1150

AISI 630
A564 Typ 630 P930•

4Valve disc1.06191.4408

A216 WCB
A351 CF8M•

5

Valve disc ring

1.4571

A479 F316Ti•

6Intermediate flange

1.4571

A479 F316Ti

7Bonnet1.4571

A479 F316Ti

8

Stuffing box flange

1.4571

A479 F316Ti

9

Fastening ring

1.45711.4408A479 F316Ti
A351 CF8M

10

Bearing bush

PTFE

•

•

11

Bearing bush

PTFE mit Kohle

•

•

12

Distance bush1.430113Disc spring set

1.8159 / Delta Tone

•

•

14

Seat ring

PTFE

•

•

15

V-ring packing

PTFE / 1.4305

•

•

16

Disc

1.440417Disc1.440418Disc1.4404

19

Ring

PTFE

•

•

20

O-ring

Viton

•

•

21

O-ring

Viton

•

•

22

O-ring

Viton

•

•

23

Ring

PTFE

•

•

24

Screw

A4-70

25

Screw

A4-70

26

Screw

A4-70

27

Screw

A4-70

28

Grooved pin

29

Screw

A4-70

30

Screw

A4-70

EB 14p_EN
March 2024 edition
Subject to technical changes

1.4542
1.4542-H1150

AISI 630
A564 Typ 630 P930

•
•

15-5

Annex15.3 Service
For maintenance and repair work as well as malfunctions or defects, contact the After Sales Service at PFEIFFER for support.

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

Necessary data
Provide the following information in the case of questions and fortroubleshooting:− Manufacturer number− Butterfly valve type
− Article number− Nominal size and version of the butterfly valve− Manual valve/automated valve− Medium (designation and consistency)− Medium pressure and temperature− Flow rate in m³/h
− Actuator signal pressure− Number of actuations (year, month, week or day)− Installation drawing if available− Completed declaration regarding contamination. This form isavailable at www.pfeiffer-armaturen.com.
Further information
The indicated <data sheets> and further information areavailable, also in English, at the following address:

PFEIFFER Chemie-Armaturenbau GmbH
Hooghe Weg 41 • 47906 Kempen
Phone: 02152 / 2005-0 • Telefax 02152 / 1580
E-Mail: sales-pfeiffer-de@samsongroup.com
Internet: www.pfeiffer-armaturen.com

15-6

EB 14p_EN
March 2024 edition
Subject to technical changes

EB 14p_EN
March 2024 edition
Subject to technical changes

EB 14p_EN
March 2024 edition
Subject to technical changes

EB 14p_EN
March 2024 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 14p_EN
March 2024 edition
Subject to technical changes