EB 2172 EN
Translation of original instructions

Type 43-6 Temperature Regulator
Self-operated Regulators

Edition July 2024

Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices. The images shown inthese instructions are for illustration purposes only. The actual product may vary.
Î For the safe and proper use of these instructions, read them carefully and keep them forlater reference.
Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service(aftersalesservice@samsongroup.com).

The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
at www.samsongroup.com > Downloads > Documentation.

Definition of signal words! DANGER
Hazardous situations which, if not avoided,
will result in death or serious injury! WARNING
Hazardous situations which, if not avoided,
could result in death or serious injury! NOTICE
Property damage message or malfunction
Note
Additional information
Tip
Recommended action

EB 2172 EN

Contents

1
1.1
1.2
1.3

Safety instructions and measures.................................................................1-1
Notes on possible severe personal injury.......................................................1-5
Notes on possible personal injury.................................................................1-5
Notes on possible property damage..............................................................1-7

2
2.1
2.2
2.3
2.4

Markings on the device...............................................................................2-1
Inscription on the valve.................................................................................2-1
Inscription on the control thermostat..............................................................2-2
Location of inscriptions on the valve and control thermostat.............................2-2
Material identification number......................................................................2-3

3
3.1
3.2

Design and principle of operation................................................................3-1
Additional fittings.........................................................................................3-3
Technical data.............................................................................................3-4

4
4.1
4.2
4.3
4.4

Shipment and on-site transport....................................................................4-1
Accepting the delivered goods......................................................................4-1
Removing the packaging from the regulator...................................................4-1
Transporting and lifting the regulator.............................................................4-1
Storing the regulator....................................................................................4-2

5
5.1
5.2
5.3
5.3.1
5.3.2
5.4
5.4.1
5.4.2
5.5

Installation..................................................................................................5-1
Installation conditions...................................................................................5-1
Preparation for installation............................................................................5-3
Mounting....................................................................................................5-5
Installing the regulator..................................................................................5-6
Cleaning the pipeline...................................................................................5-6
Testing the regulator.....................................................................................5-6
Leak test......................................................................................................5-7
Pressure test.................................................................................................5-7
Insulation....................................................................................................5-8

6
6.1
6.1.1
6.1.2

Start-up......................................................................................................6-1
Start-up and putting the regulator back into operation....................................6-2
Starting up the plant when gases and liquids are controlled............................6-2
Starting up the plant when vapors are controlled............................................6-2

7
7.1

Operation...................................................................................................7-1
Adjusting the temperature set point................................................................7-1

EB 2172 EN

Contents

8
8.1
8.2

Malfunctions...............................................................................................8-1
Troubleshooting...........................................................................................8-1
Emergency action........................................................................................8-3

9
9.1
9.2
9.3
9.4
9.5

Servicing....................................................................................................9-1
Service work preparations............................................................................9-4
Installing the regulator after service work.......................................................9-4
Service work...............................................................................................9-4
Cleaning and exchanging the seat and plug..................................................9-4
Ordering spare parts and operating supplies.................................................9-6

10

Decommissioning......................................................................................10-1

11
11.1
11.2

Removal...................................................................................................11-1
Removing the control thermostat..................................................................11-1
Removing the valve from the pipeline...........................................................11-1

12
12.1

Repairs.....................................................................................................12-1
Returning devices to SAMSON...................................................................12-1

13

Disposal....................................................................................................13-1

14

Certificates................................................................................................14-1

15
15.1
15.2
15.3
15.4
15.5

Appendix..................................................................................................15-1
Tightening torques......................................................................................15-1
Tools.........................................................................................................15-1
Lubricants..................................................................................................15-1
Spare parts...............................................................................................15-2
After-sales service......................................................................................15-3

EB 2172 EN

Safety instructions and measures

1 Safety instructions and measures
Intended use
The SAMSON Type 43-6 Regulator is a temperature regulator. It consists of a Type 2436
Valve and a Type 2430 Control Thermostat. The valve and control thermostat are delivered
separately and must be assembled according to the instructions in these mounting and operating instructions.
The self-operated regulator is used to control the temperature in the plant to an adjusted set
point. Liquids and gases or steam in district heating systems can be controlled by theType 43-6 Regulator.
The regulator is designed to operate under exactly defined conditions (e.g. operating pressure, process medium, temperature). Therefore, operators must ensure that the regulator isonly used in operating conditions that meet the specifications used for sizing the regulator at
the ordering stage. In case operators intend to use the controllers in applications or conditions other than those specified, contact SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the device for its intended purpose or for damage caused by external forces or any other external
factors.
Î Refer to the technical data and inscription on the device for limits and fields of application as well as possible uses.
Reasonably foreseeable misuse
The regulator is not suitable for the following applications:− Use outside the limits defined during sizing and by the technical data
− Use outside the limits defined by the additional fittings mounted on the regulator
Furthermore, the following activities do not comply with the intended use:
− Use of non-original spare parts− Performing service and repair work not described
Safety features
The Type 43-6 Temperature Regulator does not have any special safety features. When relieved of pressure, the regulator is closed by the force of the internal valve springs.

EB 2172 EN

1-1

Safety instructions and measures

Qualifications of operating personnel
The regulator must be mounted, started up, serviced and repaired by fully trained and qualified personnel only; the accepted industry codes and practices must be observed. According
to these mounting and operating instructions, trained personnel refers to individuals who areable to judge the work they are assigned to and recognize possible hazards due to their specialized training, their knowledge and experience as well as their knowledge of the applicable standards.
Personal protective equipment
SAMSON recommends checking the hazards posed by the process medium being used (e.g.
u GESTIS (CLP) hazardous substances database). Depending on the process medium and/or the activity, the protective equipment required includes:
Î Protective clothing, safety gloves and eye protection in applications with hot, cold and/or
corrosive media
Î Wear hearing protection when working near the valve. Follow the instructions given by
the plant operator.
Î Check with the plant operator for details on further protective equipment.
Revisions and other modifications
Revisions, conversions or other modifications of the product are not authorized by SAMSON.
They are performed at the user's own risk and may lead to safety hazards, for example. Furthermore, the product may no longer meet the requirements for its intended use.
Warning against residual hazards
To avoid personal injury or property damage, plant operators and operating personnel must
prevent hazards that could be caused in the regulator by the process medium, the operatingpressure or by moving parts by taking appropriate precautions. Plant operators and operating personnel must observe all hazard statements, warnings and caution notes in thesemounting and operating instructions.
Hazards resulting from the special working conditions at the installation site of the regulator
must be identified in a risk assessment and prevented through the corresponding safety instructions drawn up by the operator.
SAMSON also recommends checking the hazards posed by the process medium being used
(e.g. u GESTIS (CLP) hazardous substances database).
Î Observe safety measures for handling the device as well as fire prevention and explosion
protection measures.

1-2

EB 2172 EN

Safety instructions and measures

These mounting and operating instructions cover the standard version of the devices and thestandard mounting parts. Components that differ to those described in this document can be
added or removed. Refer to the mounting and operating instructions of the components notcovered in this document for the safety instructions and measures that need to be observed.
Responsibilities of the operator
Operators are responsible for proper use and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions as well as thereferenced documents to the operating personnel and to instruct them in proper operation.
Furthermore, operators must ensure that operating personnel or third parties are not exposed
to any danger.
Operators are additionally responsible for ensuring that the limits for the product defined in
the technical data are observed. This also applies to the start-up and shutdown procedures.
Start-up and shutdown procedures fall within the scope of the operator's duties and, as such,are not part of these mounting and operating instructions. SAMSON is unable to make any
statements about these procedures since the operative details (e.g. differential pressures andtemperatures) vary in each individual case and are only known to the operator.
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions aswell as the referenced documents and observe the specified hazard statements, warnings
and caution notes. Furthermore, operating personnel must be familiar with the applicablehealth, safety and accident prevention regulations and comply with them.
Referenced standards, directives and regulations
The regulators comply with the requirements of the European Pressure Equipment Directive
2014/68/EU. Regulators with a CE marking have an EU declaration of conformity, which
includes information about the applied conformity assessment procedure. The EU declarationof conformity is included in the 'Certificates' chapter.
According to the ignition hazard assessment performed in accordance with Clause 5.2 of
ISO 80079-36, the non-electrical regulators do not have their own potential ignition source
even in the rare incident of an operating fault. As a result, they do not fall within the scope of
Directive 2014/34/EU.
Î For connection to the equipotential bonding system, observe the requirements specified in
Clause 6.4 of EN 60079-14 (VDE 0165-1).

EB 2172 EN

1-3

Safety instructions and measures

Referenced documents
The following documents apply in addition to these mounting and operating instructions:− Mounting and operating instructions fore.g.

Type 2430 Control Thermostat

u EB 2430

e.g.

Type 2403 Safety Temperature Monitor (STM)u EB 2183

e.g.

Type 2439 Safety Temperature Limiter (STL)u EB 2185

e.g.

Type 1 NI Straineru EB 1010

e.g.

Type 2 NI Straineru EB 1015− Data sheets fore.g.

Accessories: Double adapter · Manual adjuster · Intermediate insulating pieceu T 2176e.g.

Typetested safety devices

u T 2181e.g.

Type 2403 Safety Temperature Monitor (STM)

u T 2183e.g.

Type 2439 Safety Temperature Limiter (STL)u T 2185

e.g.

Type 1 NI Straineru T 1010

e.g.

Type 2 NI Straineru T 1015− Mounting and operating instructions as well as data sheets for additional fittings(e.g. shut-off valves, pressure gauges etc.).

1-4

EB 2172 EN

Safety instructions and measures

1.1 Notes on possible severe personal injury! DANGER
Risk of bursting in the regulator.
Regulators and pipelines are pressure equipment. Impermissible pressure or improper
opening can lead to regulator components bursting.
Î Observe the maximum permissible pressure for regulator and plant.
Î Before starting any work on the regulator, depressurize all plant sections affected
as well as the regulator.
Î Drain the process medium from the plant sections affected as well as from the regulator.

1.2 Notes on possible personal injury! WARNING
Damage to health relating to the REACH regulation.
If a SAMSON device contains a substance listed as a substance of very high concern
on the candidate list of the REACH regulation, this is indicated on the SAMSON delivery note.
Î Information on the safe use of the part affected. u https://www.samsongroup.
com/en/about-samson/environment-social-governance/material-compliance/reach-regulation/
Risk of personal injury due to incorrect operation, use or installation as a result of
information on the regulator being illegible.
Over time, markings, labels and nameplates on the regulator may become covered
with dirt or become illegible in some other way. As a result, hazards may go unnoticed and the necessary instructions not followed. There is a risk of personal injury.
Î Keep all relevant markings and inscriptions on the device in a constantly legible
state.
Î Immediately renew damaged, missing or incorrect nameplates or labels.

EB 2172 EN

1-5

Safety instructions and measures

1.2 Notes on possible personal injury! WARNING
Risk of burn injuries due to hot or cold components and pipelines.
Depending on the process medium, regulator components and pipelines may get very
hot or cold and cause burn injuries.
Î Allow components and pipelines to cool down or warm up to the ambient temperature.
Î Wear protective clothing and safety gloves.
Risk of hearing loss or deafness due to loud noise.
The noise emissions depend on the valve version, plant facilities and process medium.
Î Wear hearing protection when working near the valve. Follow the instructions given by the plant operator.
Risk of personal injury due to residual process medium in the regulator.
While working on the regulator, residual process medium can escape and, depending
on its properties, may lead to personal injury, e.g. (chemical) burns.
Î If possible, drain the process medium from the plant sections affected and from theregulator.
Î Wear protective clothing, safety gloves and eye protection.

1-6

EB 2172 EN

Safety instructions and measures

1.3 Notes on possible property damage
Risk of regulator damage due to incorrectly attached slings.
Î Do not attach load-bearing slings to the regulator.
Risk of regulator damage due to unsuitable medium properties.
The regulator is designed for a process medium with defined properties.
Î Only use the process medium specified for sizing the equipment.
Risk of regulator damage due to contamination (e.g. solid particles) in the pipeline.
The plant operator is responsible for cleaning the pipelines in the plant.
Î Flush the pipelines before start-up.
Risk of regulator damage due to the use of unsuitable lubricants.
The lubricants to be used depend on the regulator material. Unsuitable lubricants may
corrode and damage surfaces.
Î Only use lubricants approved by SAMSON.
When in doubt, consult SAMSON.
Risk of leakage and regulator damage due to over- or under-torquing.
Observe the specified torques when tightening regulator components. Excessive tightening torques lead to parts wearing out more quickly. Parts that are too loose may
cause leakage.
Î Observe the specified tightening torques (see the 'Tightening torques' chapter inthe Appendix).
Risk of excess pressure damaging plant sections due to construction-related seatleakage through the regulator.
Î Always install a safety device (e.g. safety excess pressure valve or safety relief
valve) in the plant.

EB 2172 EN

1-7

Safety instructions and measures

Risk of regulator damage due to the use of unsuitable tools.
Certain tools are required to work on the regulator.
Î Only use tools approved by SAMSON.
When in doubt, consult SAMSON.
Risk of the process medium being contaminated through the use of unsuitable lubricants and/or contaminated tools and components.
Î Keep the regulator and the tools used free from solvents and grease.
Î Make sure that only suitable lubricants are used.
Incorrect control due to the formation of ice on the regulator.
Medium temperatures below 0 °C may cause ice to form on the regulator, dependingon the air humidity. This may affect, in particular, the functioning of the plug or control
thermostat stem guide.
Î Prevent the formation of ice by taking appropriate precautions (e.g. enclosure,trace heater etc.). The plant operator is responsible for selecting and implementing
appropriate precautions (see the 'Installation' chapter).
Risk of irreparable regulator damage caused by the regulator components being
taken apart.
The control thermostat is an inseparable hydraulic unit consisting of a control thermostat, capillary tube and temperature sensor. If these components are dismantled (e.g.
removal of the capillary tube), the regulator will be irreparably damaged and will nolonger be able to fulfill its control task.
Î Do not dismantle the regulator.
Î Only perform allowed activities on the regulator.
Î Contact SAMSON's After-sales Service before replacing spare parts.
Note
SAMSON's After-sales Service can support you concerning lubricant, tightening torques
and tools approved by SAMSON.

1-8

EB 2172 EN

Markings on the device

2 Markings on the device
There are several inscriptions on the device. The inscriptions are used to identify the separate
regulator components (see Fig. 2-1 and Fig. 2-2).
The inscription shown was up to date at the time of publication of this document. The inscription on the device may differ from the one shown.

2.1 Inscription on the valve
Inscription on bodies made of red brass or spheroidal graphite iron
SAMSON2

1
3

5

1 Type designation
2 Model number

4

3 Material number and device index

6

5 KVS/CV

7

4 Order number or year of manufacture
6 Perm. temperature in °C/°F
7 Perm. temperature in °C/°F

Nominal size, pressure rating and the arrow indicating the direction of flow are cast into the valve body.

Inscription on stainless steel body
1 Type designation

10
SAMSON

2 Model number

1

2

3

4

5

8

6

9

7

3 Material number and device index
4 Order number or year of manufacture
5

Flow coefficient:
DIN: KVS · ANSI: CV · JIS: CV

6

Perm. temperature:
DIN: °C · ANSI: °F · JIS: °C/°F

7Max. perm. differential pressure Δp:
DIN: bar · ANSI: psi · JIS: bar/psi

8

Thread size/nominal size:
DIN: DN · ANSI: NPS · JIS: DN … A/B

9Pressure rating:
DIN: PN · ANSI: CL · JIS: K

10 Arrow indicating the direction of flow

Fig. 2-1: Inscription on the valve

EB 2172 EN

2-1

Markings on the device

2.2 Inscription on the control thermostat
1 Model number
2 Type designation
1
2
3

3 Material number/configuration ID

7

4 Temperature range in °C and °F

95 Register number (device function)

8

6 DIN-tested marking

4

7 Year of manufacture
6

8 –

5

9 CE marking

Fig. 2-2: Inscription on the control thermostat

2.3 Location of inscriptions on the valve and control thermostat
Red brass body

Stainless steel bodySpheroidal graphite iron body

Location of theinscription

Location of theinscription
Top view
Type 2430

Fig. 2-3: Location of the inscriptions on the bodies

2-2

EB 2172 EN

Markings on the device

2.4 Material identification
number
The material is indicated on the body. Specifying the material number, you can contact
us to find out more details. The material
number is included in the inscription (“Material number and device index”, item 3).
For more details on the inscription, see
Chapters 2.2 and 2.1.

EB 2172 EN

2-3

Markings on the device

2-4

EB 2172 EN

Design and principle of operation

3 Design and principle of operation
Î See Fig. 3-1
The regulator consists of a Type 2436 Globe
Valve and a Type 2430 Control Thermostat
with set point adjuster, a capillary tube andtemperature sensor.
A temperature sensor operating according to
the adsorption principle is used as standard.
Note
Details on the Type 2430 Control Thermostat
with a temperature sensor operating according to the vapor pressure principle can befound in the mounting and operating instructions u EB 2430.
The valve bodies are made of red brass,spheroidal graphite iron or stainless steel.
The Type 2430 Control Thermostat is attached to the valve body (3) using the coupling nut (40).
The temperature regulators work according
to the adsorption principle. The temperatureof the medium creates a pressure in the sensor (48) which is proportional to the measured temperature. This pressure is transferred through the capillary tube (47) to theoperating element (46) and converted into a
positioning force. This force causes the pin of
the operating element (45) to move the plug
stem (1.2) with the plug (1). The plug is pressure-balanced (1.1).
By turning the set point adjuster (43), thepoint of response is changed over the valve

EB 2172 EN

spring (22). As a result, the temperature set
point is changed.
The regulator is suited for plants to becooled.
The valve opens when the temperature rises.
Version with safety thermostat
When a Type 2439 or Type 2403 Safety
Thermostat is attached to the valve or the
regulator, this combination functions as asafety temperature limiter (TR/STL) or a safety temperature monitor (TR/STM).
Details in mounting and operating instructions
u EB 2185 (STL); u EB 2083 (STM).
Version with double adapter
The temperature regulator can be equippedwith a double adapter to connect an additional control thermostat to control a further
control variable.
See Data Sheet u T 2176.
Version with handwheel
For the manual operation of the valve. The
manual adjuster can either be attached directly to the valve or at the double adapter
instead of a control thermostat.
See Data Sheet u T 2176.
Note
The Type 43-6 Regulator is not a safetyvalve. If necessary, a suitable overpressure
protection must be installed on site in theplant section.

3-1

Design and principle of operation

Type 2436 Valve

7

35

1.1

3

1

22

5

1.2
38
28

47

40

41

53
52

42

51

43

50
48
44
45
46

Type 2430 Control Thermostat

1
1.1
1.2
3
5
7

Plug assembly
Balancing bellows
Plug stem
Body
Seat
Seal

22
28
35
38
40
41

Valve spring
Seal
Stopper
Guide nipple
Coupling nut
Lead-seal hole

42 Set point spring
43 Set point adjuster
44 Operating bellows
Pin of operating
45
element
46 Operating element

47
48
50
51
52
53

Capillary tube
Temperature sensor
Thermowell (optional)
Packing
GasketScrew

Fig. 3-1: Functional diagram of regulator, DN 15 to 25 · G ½ to 1

3-2

EB 2172 EN

Design and principle of operation

3.1 Additional fittings

Thermometer
Install a thermometer (4) downstream of theregulator to monitor the temperature prevailing in the plant.

Î See Fig. 3-2
Strainers
SAMSON recommends installing a
SAMSON strainer (2) upstream of the valve.
It prevents solid particles in the process
medium from damaging the regulator.
Î Do not use the strainer to permanently
filter the process medium.
Î Select a strainer (mesh size) suitable forthe process medium.
Note
Any impurities carried along by the process
medium may impair the proper functioningof the regulator. We recommend installing astrainer (e.g. SAMSON Type 1 NI) upstreamof the temperature regulator (u EB 1010).

Bypass and shut-off valves
SAMSON recommends installing a shut-off
valve (1 and 6) both upstream of the strainerand downstream of the regulator and installing a bypass line. The bypass ensures thatthe plant does not need to be shut down forservice and repair work on the regulator.
Insulation
Regulators can be insulated to reduce heat
energy transfer.
Refer to the instructions in the 'Installation'
chapter.

5 4
1

1 Shut-off valve
2 Strainer

2

3

6

3 Temperature regulator
4 Thermometer5 Temperature sensor
6 Shut-off valve

Fig. 3-2: Installation example · Type 43-6 in a cooler

EB 2172 EN

3-3

Design and principle of operation

3.2 Technical data
The regulator inscription provides information on the regulator version (see the 'Markings on the device' chapter).
NoteMore information is available in Data Sheetsu T 2171 and u T 2172.
Process medium and scope of application
Temperature regulators for district heating
systems, heat generators, heat exchangers
and other HVAC and industrial applications.
The Type 43-6 Temperature Regulator is designed to maintain the temperature at thecontrol thermostat sensor to the adjusted set
point.
− Suitable for liquids, gases and steam− Max. temperature up to 150 °C/300 °F− Temperature set points from 0 to
150 °C/32 to 300 °F− Nominal sizes G ½ to 1/½ NPT to
1 NPT and DN 15 to 50− Pressure ratings PN 25/Class 150
and 300/JIS 20K
The regulator opens when the temperaturerises.
Conformity
The Type 43-6 Regulator bears both the CE
and EAC marks of conformity.

3-4

Testing according to DIN EN
The Type 43-6 Temperature Regulator is tested by the German technicalsurveillance association TÜV according to DIN EN 14597 under the typedesignation 2750-0. The registration
number is available on request.
Noise emissions
SAMSON is unable to make general statements about noise emissions. The noise emissions depend on the regulator version, plantfacilities, process medium and operating
conditions.
Leakage class
The metal-seated regulator has the leakageclass I according to IEC 60534-4.
The soft-seated regulator has the leakageclass IV according to IEC 60534-4.
Temperature range
Depending on how the Type 43-6 Regulator
is configured, it can be used up to max.
150 °C/300 °F. The minimum temperature islimited by the seal material used in the regulator (see Table 3-1).
Dimensions and weights
Table 3-4 provides a summary of the dimensions and weights. The lengths and heights
in the dimensional drawings are shown on
page 3-9.

EB 2172 EN

Design and principle of operation

Table 3-1: Technical data · All pressures in bar (gauge)
Type 2436 Valve
ANSI

DIN

Nominal size

½ NPT to 1 NPT

Pressure rating

Class 150

Max. permissible differential pressure ∆p

232 psiPerm. permissible temperature range ofvalve 4)32 to 302 °F

Leakage class according to IEC 60534‑4

G ½ to 1

DN 15 to 25

DN 32 to 50

PN 25
16 bar8 bar

0 to 150 °C

Metal seal: Leakage class I (≤0.05 % of KVS/CV coefficient)
Soft seal: Leakage class IV (≤0.01 % of KVS/CV coefficient)·

Conformity
Type 2430 Control Thermostat
Set point range 1)(continuously adjustable)

DIN

0 to 35 °C · 25 to 70 °C · 40 to 100 °C
50 to 120 °C · 70 to 150 °C

ANSI

32 to 95 °F · 77 to 158 °F · 104 to 212 °F
122 to 248 °F · 158 to 302 °F

Capillary tube

6.56 ft · 16.4 ft 3)

Max. perm. temperature at the sensor
Permissible ambient temperature range

2 m · 5 m 3)
50 K above the adjusted set point–4 to +176 °F

2)–20 to +80 °C 2)

Perm. pressure at sensor

Class 150

PN 25

Permissible pressure at thermowellClass 300 or
600 3)PN 40 or 100 3)

Conformity
1)
2)
3)
4)

Further set point ranges on request
At temperatures below freezing: ice formation may damage the plant and especially the valve
Special version
With intermediate insulating piece –15 to 150 °C/5 to 302 °F

EB 2172 EN

3-5

Design and principle of operation

Table 3-2: KVS/CV coefficients
Type 2436 Valves
G ½ 2) 4)G ¾ 2) 4)

G 1 2) 4)

1)

3.2

4.0

5.0

CV 1)

4.3

6.8

8.6

DN 15 3)

DN 20 3)

DN 25 3)

DN 32 3)

DN 40 3)

DN 50 3)

KVS 1)

3.2

4.0

5.0

12.5

16.0

20.0

CV

4.3

6.8

8.6

4.3

6.8

8.6

KVS

1)
2)
3)
4)

1)

–

Special version with KVS 0.4, 1 or 2.5/CV 0.5, 1.2 or 3
Red brass body with screwed ends
Flanged body made of spheroidal graphite iron
Stainless steel body with screwed ends

Table 3-3: Materials · Material numbers according to DIN EN
Type 2436 ValveDIN
Red brass (RG5)
CC499K

Body

DIN 4)/ANSI 5)

Spheroidal graphite iron
EN-GJS-400-18-LT 1)

Seat

Stainless steel 1.4305

Plug

Brass, resistant to dezincification, CW617N(CuZn40Pb) and 1.4104 with PTFE soft seal 2) 3)

Balancing bellows

Stainless steel 1.4571

Valve spring

Stainless steel 1.4310

Stainless steel
1.4408 CF8M
1.4408Type 2430 Control Thermostat

PTFE, glass fiber reinforced

Set point adjuster
Temperature
sensor
1)
2)
3)
4)
5)

Capillary tube

Copper

Thermowell

Copper or stainless steel 1.4310

Flanged body valve (DIN only)
For oils (ASTM I, II, III): FKM soft seal
When KVS = 0.4 and 1.0: 1.4305
Female thread (G ½ to G 1) and flanges (DN 15 and 25)
Female thread (½ NPT to 1 NPT)

3-6

EB 2172 EN

Design and principle of operation

Table 3-4: Dimensions in mm and weights in kg
Type 2436 Valve (female thread)
DIN
Nominal size

G½

Length L

65 mm

Height H

ANSI

G¾

G1

½ NPT

¾ NPT

1 NPT

75 mm

90 mm

2.56 inch

2.95 inch

3.54 inch

190 mmHeight H2

7.5 inch

46 mm

Width across flats (A/F)

34

1.8 inch
46

34

46

WeightType 43-6 with bulb sensor andthermowell 1) 2) (approx.)

1.8 kg

1.9 kg

2.0 kg

4.0 lbs

4.2 lbs

4.4 lbs

DN 15

DN 20

DN 25

DN 32

DN 40

DN 50

65

70

75

100

110

130

G¾

G1

G 1¼

G 1¾

G2

G 2½

Type 2436 Valve (male thread)
Nominal size
Length L
Height H2Connection R

95

Width across flats (A/F)

30

36

46

59

65

82

Pipe Ø d

21.3

26.8

32.7

42.0

48.0

60.0

Male thread A

G½

G¾

G1

G 1¼

G 1½

G2

Type 2436 Valve · Welding ends · Threaded ends
Length L1 for welding ends

210

234

244

268

294

330

Length L2 for threaded ends

129

144

159

180

196

228

Height H

210

WeightType 43-6 with bulb sensor andthermowell 1) (approx. kg)

2.0

2.3

2.8

4.7

5.1

7.5

Nominal size

DN 15

DN 20

DN 25

DN 32

DN 40

DN 50

Length L3

130

150

160

180

200

230

Type 2436 Valves (flanges)

Height H
1)
2)

180

230

Version without thermowell: minus 0.2 kg
Stainless steel body +0.2 kg

EB 2172 EN

3-7

Design and principle of operation

Table 3-4: Dimensions in mm and weights in kg
Height H2

31

45

47

WeightType 43-6 with bulb sensor andthermowell 1) (approx. kg)

3.1

3.9

4.6

7.6

9.8

14.1

Type 2430 Control Thermostat
DIN
For nominal size
Screw gland S

1)
2)

DN 15 to 25

ANSI
DN 32 to 50½ NPT to 1 NPT

G½

G¾

½ NPT

Length LFT

185 mm

220 mm7.28 inch

Ø dF

9.5 mm

16 mm

0.37 inch

Ø dT

12 mm

19 mm

0.47 inch

Version without thermowell: minus 0.2 kg
Stainless steel body +0.2 kg

3-8

EB 2172 EN

Design and principle of operation

Dimensional drawings
S

L
H2

L

R

H

LFT

LFT

H2
SW
H
ØdT

ØdF

Thermowell Packing
Valve with male thread (red brass) and control thermostat

Female thread (red brass)

L2
L3

A

L
SW

H2

Valve with threaded ends

L1

H

H2

H

Ød
SW
Valve with welding ends

Flanged body (spheroidal graphite
iron)

Female thread (stainless steel)Fig. 3-3: Dimensions in mm

EB 2172 EN

3-9

Design and principle of operation

3-10

EB 2172 EN

Shipment and on-site transport

4 Shipment and on-site transport
The work described in this chapter is only tobe performed by personnel appropriately
qualified to carry out such tasks.

4.1 Accepting the delivered
goods
After receiving the shipment, proceed asfollows:
1. Check the scope of delivery. Check thatthe specifications on the nameplate andon the regulator itself match the specifications in the delivery note. See the'Markings on the device' chapter for
nameplate details.
2. Check the shipment for transportation
damage. Report any damage to
SAMSON and the forwarding agent(refer to delivery note).
3. Determine the weight and dimensions of
the units to be lifted and transported inorder to select the appropriate lifting
equipment and lifting accessories. Referto the transport documents and the 'Design and principle of operation' chapter.

4.2 Removing the packaging
from the regulator
The components (valve, control thermostat
and, if applicable, thermowell) of the regulator are delivered separately.

EB 2172 EN

Î Do not open or remove the packaging
until immediately before lifting to install
the regulator into the pipeline.
Î Leave the regulator in its transport container or on the pallet to transport it onsite.
Î Do not remove the protective caps fromthe inlet and outlet until immediately
before installing the valve with flanges
into the pipeline. They prevent foreign
particles from entering the valve.
Î Dispose and recycle the packaging inaccordance with the local regulations.

4.3 Transporting and lifting theregulator
Due to the low service weight, lifting equipment is not required to lift and transport theregulator (e.g. to install it into the pipeline).
Î Leave the regulator in its transport container or on the pallet to transport it.
Î Observe the transport instructions.
Transport instructions
Î Protect the regulator against external influences (e.g. impact).
Î Do not damage the corrosion protection(paint, surface coatings). Repair any
damage immediately.
Î Protect the regulator against moistureand dirt.
Î The permissible ambient temperature ofstandard regulators is –20 to +80 °C/–4
to +175 °F.

4-1

Shipment and on-site transport

4.4 Storing the regulator! NOTICE
Risk of regulator damage due to improper
storage.
Î Observe the storage instructions.
Î Avoid long storage times.
Î Contact SAMSON in case of different
storage conditions or longer storage
times.
Storage instructions
Î Protect the regulator against external influences (e.g. impact).
Î Secure the regulator in the stored position against slipping or tipping over.
Î Do not damage the corrosion protection(paint, surface coatings). Repair any
damage immediately.

Note
We recommend regularly checking the regulator and the prevailing storage conditions
during long storage periods.
Special storage instructions for elastomers
Elastomer, e.g. O-rings
Î We recommend a storage temperature of
15 °C/60 °F for elastomers.
Î Store elastomers away from lubricants,
chemicals, solutions and fuels.
Tip
SAMSON's After-sales Service can provide
more detailed storage instructions on request.

Î Protect the regulator against moistureand dirt. Store it at a relative humidity ofless than 75 %. In damp spaces, prevent
condensation. If necessary, use a drying
agent or heating.
Î Make sure that the ambient air is free ofacids or other corrosive media.
Î The permissible storage temperature ofstandard regulators is –20 to +65 °C/–4
to +150 °F.
Î Do not place any objects on the regulator.

4-2

EB 2172 EN

Installation

5 Installation
The work described in this chapter is only tobe performed by personnel appropriately
qualified to carry out such tasks.
Valve and control thermostat can be assembled before or after the valve has been installed in the pipeline. We recommend first
installing the valve without the control thermostat into the pipeline.

5.1 Installation conditions
Work position
The work position for the regulator is thefront view onto all operating controls on theregulator (including any additional fittings)
seen from the position of operating personnel.
Plant operators must ensure that, after installation of the device, the operating personnel
can perform all necessary work safely andeasily access the device from the work position.
Pipeline routing
The inlet and outlet lengths vary depending
on several variables and process conditions
and are intended as recommendations. Contact SAMSON if the lengths are significantly
shorter than the recommended lengths.
To ensure that the regulator functions properly, proceed as follows:Î Observe the inlet and outlet lengths (seeTable 5-2). Contact SAMSON if the regulator conditions or state of the medium
process deviate.

EB 2172 EN

Î Install the regulator free of stress andwith the least amount of vibrations as
possible. Read information under‘Mounting position’ and ‘Temperature
sensor’ in this chapter.
Î Install the regulator allowing sufficientspace to remove the control thermostat
and valve or to perform service work on
them.
Mounting position
To ensure that the regulator functions properly, proceed as follows:Î The regulator can be mounted in any position when the medium temperature is
up to 80 °C/175 °F.
Î At medium temperatures above
80 °C/175 °F and with steam, install itwith the control thermostat suspended
downward in horizontal pipelines (seeFig. 5-1).
Î Make sure the direction of flow matches
the direction indicated by the arrow on
the body.
Î Contact SAMSON if the mounting position is not as specified above.
! NOTICE
Damage due to freezing.
Protect the regulator from icing up when controlling media that can freeze. Unless theregulator is installed in locations where no
frost occurs, remove the regulator from thepipeline when the plant is shut down.

5-1

Installation

Mounting orientation
For gases and liquids above
80 °C/175 °F and steam

Note
If the sensor is to be used with a thermowell,only use original SAMSON thermowells.
Weld a welding socket with G ½ or G ¾ female thread (to match the screw gland) at
the place of installation.

Mounting orientation
For gases and liquids at
medium temperature up to
80 °C/175 °F

Î Seal the screw gland of the sensor.
Installation with thermowell
When a thermowell is used, a welding socket with G 1 female thread must be used.
1. Seal the thermowell into the welding
socket.

Fig. 5-1: Mounting position

2. Insert the sensor and tighten it with theclamping screw.

Temperature sensor

Note
For temperature regulators with safety temperature limiter (TR/STL), install the sensor of
the limiter near the control thermostat sensor.

Î See Fig. 5-2! NOTICE
Galvanic corrosion due to incorrectly
selected materials of the mounting parts.
On installing the sensor or thermowell, only
combine the same kind of materials (e.g.
stainless steel with stainless steel or copper
together with other copper materials).
The temperature sensor (19), even together
with a thermowell (20), can be installed inany position as required. However, makesure its entire length is immersed in the process medium to be controlled. It must be installed in a location where overheating or
considerable idling times cannot occur.

5-2

Dynamic behavior of Type 2430 Control
Thermostat
The dynamics of the regulator are mainly determined by the response of the sensor with
its characteristic time constant. Table 5-1
shows the dynamic behavior of theType 2430 Control Thermostat measured inwater.
Capillary tube
Carefully run the capillary tube without
bending or twisting it. Avoid locations withconsiderable ambient temperature fluctuations along the entire length of the tube.

EB 2172 EN

Installation

Note
Do not damage or shorten the capillary
tube. Roll up any capillary tube that is not
used. The smallest permissible bending radius is 50 mm.
Support and suspension
Note
The plant engineering company is responsible for selecting and implementing a suitablesupport or suspension of the installed regulator and the pipeline.
Depending on the regulator version andmounting position, the regulator and pipeline must be supported or suspended.
! NOTICE
Do not attach supports directly to the regulator.

5.2 Preparation for installation
Before installation, make sure the following
conditions are met:
− The valve and control thermostat areclean.
− The valve, control thermostat and thermowell (if used) are not damaged.

size, material, pressure rating and temperature range) match the plant conditions (size and pressure rating of thepipeline, medium temperature etc.). See
the 'Markings on the device' chapter for
nameplate details.
− The requested or required additional fittings have been installed or prepared asnecessary before installing the valve andcontrol thermostat (see the 'Design andprinciple of operation' chapter).
Proceed as follows:Î Lay out the necessary material and tools
to have them ready during installationwork.
Î Flush the pipeline before installing theregulator.
The plant operator is responsible forcleaning the pipelines in the plant.
Î For steam applications, dry the pipelines.
Moisture will damage the inside of theregulator.
Î Check any mounted thermometers tomake sure they function properly.

Note
The plant operator is responsible for cleaning the pipelines in the plant.

− Install a strainer upstream of the valve.
− The valve and control thermostat data on
the nameplates (type designation, valve

EB 2172 EN

5-3

Installation

Table 5-1: Dynamic behavior of Type 2430 Control Thermostat (adsorption principle)
Type 2430

Sensor Ø

Without thermowellWith thermowell9.5 mm/0.37 inch

15

40

16 mm

30

80

Air sensor

8

– 1)

Adsorption principle
1)

Time constant [s]Thermowell not possible

Table 5-2: Inlet and outlet lengths
DNmin.
b x DNmin.
a x DNab
State of process
mediumValve conditions

Gas
Vapors 1)
Liquid1)

5-4

Inlet length
Outlet length

Inlet length a

Outlet length b

Ma ≤ 0.3

24

Ma ≤ 0.3

2

4

2

4

2

4

Free of cavitation/w < 3

m/s

Cavitation producing noise/w ≤ 3 m/s

No saturated steam

EB 2172 EN

Installation

5 4
1

2

3

1
2
3
4
5
6

6

Shut-off valve
Strainer
Temperature regulator
Thermometer
Temperature sensor
Shut-off valve

Fig. 5-2: Installation example · Type 43-6 in a cooler

5.3 Mounting
The components (valve, control thermostat
and, if applicable, thermowell) of the regulator are delivered separately. The activities
listed below are necessary for installation
and before start-up of the regulator.

! NOTICE
Risk of regulator damage due to the use of
unsuitable tools.
Î Only use tools approved by SAMSON(see 'Tools' in the Appendix).

! NOTICE
Risk of regulator damage due to excessively high or low tightening torques.
Observe the specified torques when tightening regulator components. Excessive tightening torques lead to parts wearing out more
quickly. Parts that are too loose may cause
leakage.
Î Observe the specified tightening torques(see 'Tightening torques' in the Appendix).

EB 2172 EN! NOTICE
Risk of regulator damage due to the use of
unsuitable lubricants.
Î Only use lubricants approved by
SAMSON (see 'Lubricants' in the
Appendix).

5-5Installation

5.3.1

Installing the regulator

1. Close the shut-off valves upstream anddownstream of the regulator while theregulator is being installed.
2. Remove the protective caps from thevalve ports of valve with flanges before
installation.
3. Observe the flow direction through thevalve. The arrow on the valve indicatesthe direction of flow.
4. Make sure that the correct gaskets areused.
5. Bolt the pipe to the valve free of stress.
6. Slowly open the shut-off valves in thepipeline after the regulator has been installed.

5.4 Testing the regulator! DANGER
Risk of bursting due to incorrect opening ofpressurized equipment or components.
Regulators and pipelines are pressure equipment that may burst when handled incorrectly. Flying projectile fragments or the release of process medium under pressure cancause serious injury or even death.
Before working on the regulator:
Î Depressurize all plant sections concerned
and the regulator.
Î Drain the process medium from all theplant sections concerned as well as thevalve.
Re!
DANGER

5.3.2

Cleaning the pipeline

We recommend additionally flushing thepipeline without the installed regulator before start-up. In this case, install a suitable
length of pipe into the pipeline in place ofthe regulator.
Î Observe the mesh size of the upstream
strainer for the maximum particle size.
Use strainers to suit the process medium.
Î Check the strainer for dirt each time thepipeline is flushed and clean it, if necessary.

5-6

Risk of personal injury due to process medium escaping.
Î Do not start up the regulator until allparts have been mounted.
! WARNING
Risk of hearing loss or deafness due to loudnoise.
Noise emission (e.g. cavitation or flashing)
may occur during operation caused by theprocess medium and the operating conditions.
Î Wear hearing protection when working
near the valve. Follow the instructions
given by the plant operator.

EB 2172 EN

Installation! WARNING
Risk of burn injuries due to hot or very cold
components and pipelines.
Depending on the process medium, the regulator and pipelines may get very hot or coldand cause burn injuries.
Î Wear protective clothing and safety
gloves.
SAMSON regulators are delivered ready foruse. To test the regulator functioning before
start-up or putting back the regulator into
operation, perform the following tests:

5.4.1

Leak test

The plant operator is responsible for performing the leak test and selecting the test
method. The leak test must comply with therequirements of the national and international standards that apply at the site of installation.
Tip
SAMSON's After-sales Service can support
you to plan and perform a leak test for yourplant.

EB 2172 EN

1. Slowly open the shut-off valve installed
upstream of the regulator.
2. Apply the required test pressure.
3. Check the regulator for leakage to the atmosphere.
4. Check the screw gland of the sensor orthermowell for leakage.
5. Depressurize the pipeline section andregulator.
6. Rework any parts that leak and repeat
the leak test.

5.4.2

Pressure test

Note
The plant operator is responsible for
performing the pressure test. SAMSON's
After-sales Service can support you to planand perform a pressure test for your plant.
! NOTICE
Risk of regulator damage due to a suddenpressure increase and resulting high flow velocities.
Î Slowly open the shut-off valves.

5-7Installation

During the pressure test, make sure the following conditions are met:Î Do not allow the pressure to exceed the
1.5 times the pressure rating of the valve
body.
Î The valve must remain open.
Therefore, adjust the lowest temperature
set point to ensure that the regulator does
not close.
Î Make sure that the pressure rises simultaneously upstream and downstream of theregulator to avoid damaging the balancing bellows/plug.

5.5 Insulation
To insulate cold systems, we recommend first
filling the plant and carefully rinsing it. The
regulator must not yet be insulated at thisstage.
! NOTICE
Risk of regulator damage due to incorrect
insulation.
Î Only insulate the regulator up to the control thermostat for medium temperatures
below 0 °C/32 °F or above
80 °C/175 °F.
1. Start up the plant and adjust the set point(see the 'Start-up' chapter).
2. Shut down the plant again and let it heatup until the condensation water has
dried off.
3. Insulate the regulator and pipes conveying the process medium using insulationmaterial with a water vapor barrier. If an
external control line is to be routed
through the insulation, special care must
be taken with the sealing since slightchanges in shape may occur. The insulation thickness depends on the medium
temperature and the ambient conditions.
50 mm is a typical thickness.

5-8

EB 2172 EN

Start-up

6 Start-up
The work described in this chapter is only tobe performed by personnel appropriately
qualified to carry out such tasks.
Re!
DANGER
Risk of personal injury due to process
medium escaping.
Î Do not start up the regulator until allparts have been mounted.
! WARNING
Risk of burn injuries due to hot or cold
components and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn injuries.
Î Allow components and pipelines to cool
down or warm up to the ambient temperature.
Î Wear protective clothing and safety
gloves.
! WARNING
Risk of hearing loss or deafness due to loudnoise.
Noise emission (e.g. cavitation or flashing)
may occur during operation caused by theprocess medium and the operating conditions.
Î Wear hearing protection when working
near the valve. Follow the instructions
given by the plant operator.

EB 2172 EN! NOTICE
Risk of overheating due to excessive
ambient temperatures or insufficient heatdissipation when components are insulated.
− Do not include the regulator in the insulation of the pipeline.
! NOTICE
Risk of impaired functioning of theregulator and leakage at the joint due toinstallation under tension.
− Bolt the regulator to the pipeline free ofstress.
− If necessary, support the pipelines near tothe connections.
− Do not attach supports directly to the valve
or control thermostat.
Before start-up or putting the device back into service, make sure the following conditions are met:
− The regulator is properly installed into
the pipeline (see the 'Installation' chapter).
− The leak and function tests have been
completed successfully (see the 'Testing
the regulator' chapter).
− The prevailing conditions in the plant
section concerned meet the regulator sizing requirements (see information under'Intended use' in the 'Safety instructions
and measures' chapter).

6-1

Start-up

6.1 Start-up and putting theregulator back into operation

6.1.2

1. Depending on the field of application,
allow the regulator to cool down or
warm up to reach ambient temperature
before start up.

1. Completely drain and dry steam lines toprevent water hammering.

2. Slowly open the shut-off valves in thepipeline. Slowly opening these valvesprevents a sudden surge in pressure andhigh flow velocities which can damage
the valve.
3. Check the regulator to ensure it functions
properly.

6.1.1

Starting up the plant
when gases and liquids
are controlled

1. Open the shut-off valves slowly preferably starting from the upstream pressure
side. Afterwards, open all the valves on
the consumer side (downstream of theregulator).

Starting up the plant
when vapors arecontrolled

2. Slowly allow the steam to enter the plant
to ensure that the pipes and valves warm
up evenly and to avoid excessive flow
velocities.
3. Before the full capacity is reached, drain
off the start-up condensate.
4. Make sure that the air contained in theplant escapes as quickly as possible.
5. Open the shut-off valves slowly preferably starting from the upstream pressureside.
6. Avoid pressure surges.
7. Check the adjusted temperature set pointat the thermometer installed near thetemperature sensor.

2. Fill the plant slowly with the process medium. Avoid pressure surges.
3. Make sure that the pressure rises simultaneously upstream and downstream of theregulator to avoid damaging the balancing bellows/plug.
4. To start up the regulator, open shut-off
valves slowly.
5. Check the adjusted temperature set pointat the thermometer installed near thetemperature sensor.

6-2

EB 2172 EN

Operation

7 Operation
Immediately after completing start-up or
placing the regulator back into service (seethe 'Start-up' chapter), the regulator is readyfor use.
! WARNING
Risk of burn injuries due to hot or cold components and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn injuries.
Î Allow components and pipelines to cool
down or warm up to the ambient temperature.
Î Wear protective clothing and safety
gloves.
! WARNING
Risk of hearing loss or deafness due to loudnoise.
Noise emission (e.g. cavitation or flashing)
may occur during operation caused by theprocess medium and the operating conditions.
Î Wear hearing protection when working
near the valve. Follow the instructions
given by the plant operator.

EB 2172 EN

7.1 Adjusting the temperature
set point
Adjust the required set point by turning theset point adjuster (43) by hand. The adjustment diagrams (see Fig. 7-3) can be used asa guide to find the first approximate value.
Set point adjusterÎ Turn the set point adjuster clockwise ()to increase the temperature set point.
Î Turn the set point adjuster counterclockwise () to reduce the temperature set
point.
The thermometer (4) installed on the downstream side on site allows the adjusted set
point to be monitored.
Note
Higher set point temperatures can be
adjusted in increments as required. However,to lower the set point temperature, proceed
in steps of 10 to 20 °C/50 to 68 °F. When
doing so, wait for the process medium tocool down before continuing. Watch thethermometer.

7-1

Operation

Type 43-6 (DIN)
Set point ranges for G ½ to G 1 and
DN 15 to 25 with sensor Ø9.5 mm
70...150

°C
150
140

Set point ranges for DN 32 to 50
with sensor Ø 16 mm
70...150

°C
150
140

120

50...120

120

50...120

100

40...100

100

40...100

80

25...70

60
40

0...35

20
0

0

1

2

3

4 Scale marking 1)

Set point ranges for ½ NPT to
1 NPT with sensor Ø0.37 inch
158…302

°F
302
284
248

122…248212

104…212

176

77…158

140
104

40

0...3500

Set point range
0 to 35 °C
32 to 95 °F

25 to 70 °C
77 to 158 °F

40 to 100 °C
104 to 212 °F

50 to 120 °C
122 to 248 °F

0

1

2

3

4 Scale marking 1)

Fig. 7-3: Adjustment diagrams

1

2

3

4 Scale marking 1)

Table 7-3: Set point ranges

32…95

68

7-2

25...7060

20Type 43-6 (ANSI)

32

80

70 to 150 °C
158 to 302 °F

Set point change
per turn

Sensor Ø

2.5 °C
4.5 °F

9.5 mm0.37 inch

2 °C

16 mm

3 °C
5.4 °F

9.5 mm0.37 inch

2 °C

16 mm

4 °C
7.2 °F

9.5 mm0.37 inch

3 °C

16 mm

4 °C
7.2 °F

9.5 mm0.37 inch

4.5 °C

16 mm

4.5 °C
8.1 °F

9.5 mm0.37 inch

5 °C

16 mm

1)

On the thermostat headEB 2172 EN

Malfunctions

8 Malfunctions
8.1 Troubleshooting
Malfunction

Temperature at thesensor exceeds theset point.

Temperature at thesensor fluctuates.

Possible reasons

Recommended action

Seat and plug are worn or leak.

Î Clean the seat and plug.
Î Replace the damaged seat and plug.
Î Contact SAMSON's After-sales Service.

Foreign particles blocking the plugÎ Remove foreign particles.
Î Replace damaged parts.
Î Contact SAMSON's After-sales Service.

A safety device (e.g. STL or STM) has been
triggered.

Î Check plant. Unlock safety device (where
necessary).

Sensor installed in the wrong location.

Î Change the mounting position.

Sensor installed incorrectly.

Î Immerse the temperature sensor with its entire
immersion depth in the process medium.
Î Avoid an installation site where idle times orheat buildup can occur.

Regulator or KVS/CV coefficient too large

Î Check the sizing.
Î Change KVS/CV coefficient, if necessary or
install a different sized regulator.
Î Contact SAMSON's After-sales Service.

Regulator or KVS/CV coefficient too large

Î Check the sizing.
Î Change KVS/CV coefficient, if necessary or install a different sized regulator.
Î Contact SAMSON's After-sales Service.

Sensor installed in the wrong location.

Î Change the mounting position.

Sensor installed incorrectly.

Î Immerse the temperature sensor with its entire
immersion depth in the process medium.
Î Avoid an installation site where idle times orheat buildup can occur.

Time constant is too large for the controlloop.

Î Fill the thermowell with thermal paste or
remove the thermowell.
Î Use a sensor with smaller time constant (e.g.
vapor pressure thermostat).

Sensor installed incorrectly.

Î Immerse the temperature sensor with its entire
immersion depth in the process medium.
Î Avoid an installation site where idle times orheat buildup can occur.

Slow control
response

EB 2172 EN

8-1

Malfunctions

Malfunction

Temperature at thesensor does notreach the set point.

Possible reasons

Recommended action

Control thermostat defectiveÎ Replace the control thermostat.

Valve installed against the flow.

Î Install the valve so that the direction of flow
matches the direction indicated by the arrowon the body.

Strainer blocked.

Î Clean the strainer.

Regulator or KVS/CV coefficient too smallÎ Check the sizing.
Î Change KVS/CV coefficient, if necessary or install a different sized regulator.
Î Contact SAMSON's After-sales Service.

Insufficient heating energy availableÎ Draw up an energy balance.

Foreign particles blocking the plugÎ Remove foreign particles.
Î Replace damaged parts.
Î Contact SAMSON's After-sales Service.

Sensor installed in the wrong location.

Î Change the mounting position.

Sensor installed incorrectly.

Î Immerse the temperature sensor with its entire
immersion depth in the process medium.
Î Avoid an installation site where idle times orheat buildup can occur.

Jerky control
response

Increased friction, e.g. due to foreign particles between seat and plug.

Loud flow-induced
noiseHigh flow velocity, cavitation.

Leak between
control thermostat
and valveÎ Remove foreign particles.
Î Replace damaged parts.
Î Contact SAMSON's After-sales Service.
Î Check the sizing.
Î Install larger regulator, if necessary.

Valve seal defective

Î Contact SAMSON's After-sales Service.

Note
Contact SAMSON's After-sales Service for malfunctions not listed in the table.

8-2

EB 2172 EN

Malfunctions

The malfunctions listed in Chapter 8.1 arecaused by mechanical faults and incorrect
regulator sizing. In the simplest case, thefunctioning can be restored following therecommended action. Special tools may berequired to rectify the fault.

8.2 Emergency action

Exceptional operating and installation conditions may lead to changed situations that
may affect the control response and lead tomalfunctions. For troubleshooting, the conditions, such as installation, process medium,
temperature and pressure conditions, must
be taken into account.

In the event of a regulator malfunction:

Tip
SAMSON's After-sales Service can support
you in drawing up an inspection and test
plan for your plant.

3. Rectify those malfunctions that can be
remedied based on the instructions
provided here. Contact SAMSON's
After-sales Service in all other cases.

Plant operators are responsible for emergency action to be taken in the plant.
We recommend removing the regulator fromthe pipeline before repairing it.
1. Close the shut-off valves upstream anddownstream of the regulator to stop theprocess medium from flowing throughthe regulator.
2. Perform troubleshooting (see Chapter 8.1).

Putting the regulator back into operation
after a malfunction
See the 'Start-up' chapter.

EB 2172 EN

8-3

Malfunctions

8-4

EB 2172 EN

Servicing

9 Servicing
The regulator does not require much
maintenance. Nevertheless, it is subject tonatural wear, particularly at the seat, plugand control thermostat. Depending on theoperating conditions, check the regulator at
regular intervals to avoid possible
malfunctions. Plant operators are responsiblefor drawing up an inspection and test plan.
Details on faults and how to remedy themcan be found in the 'Malfunctions' chapter.
The work described in this chapter is to be
performed only by personnel appropriately
qualified to carry out such tasks.
SAMSON recommends removing the regulator from the pipeline before performing any
maintenance or service work.

! WARNING
Risk of burn injuries due to hot or cold components and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn injuries.
Î Allow components and pipelines to cool
down or warm up to the ambient temperature.
Î Wear protective clothing and safety
gloves.

EB 2172 EN! WARNING
Risk of personal injury due to residual process medium in the regulator.
While working on the regulator, residual
process medium can escape and, depending
on its properties, may lead to personal injury, e.g. (chemical) burns.
Î Wear protective clothing, safety gloves
and eye protection.
! NOTICE
Risk of regulator damage due to over- or
under-torquing.
Observe the specified torques when tightening regulator components. Excessive tightening torques lead to parts wearing out more
quickly. Parts that are too loose may cause
leakage.
Î Observe the specified tightening torques(see the 'Tightening torques' chapter inthe Appendix).
! NOTICE
Risk of regulator damage due to the use of
unsuitable tools.
Î Only use tools approved by SAMSON(see the 'Tools' chapter in the Appendix).

9-1

Servicing! NOTICE
Risk of regulator damage due to the use of
unsuitable lubricants.
Î Only use lubricants approved by
SAMSON (see the 'Lubricants' chapter inthe Appendix).
Note
The regulator was checked by SAMSON
before it left the factory.
− Certain test results certified by SAMSON
lose their validity when the regulator is
opened. Such testing includes seat leakage
and leak tests.
− The product warranty becomes void ifservice or repair work not described inthese instructions is performed without
prior agreement by SAMSON's After-sales
Service.
− Only use original spare parts by
SAMSON, which comply with the original
specifications.

35
7
10
22
3
1
5

13
26
28
38

1

Plug assembly

3

Body

5

Seat

7

Seal

10 Guide bushing
13 Pin22 Valve spring
26 Retaining washer
28 SealTip
SAMSON's After-sales Service can support
you in drawing up an inspection and test
plan for your plant.

9-2

35 Stopper
38 Guide nipple

Fig. 9-1: Functional diagram of regulator,
DN 32 to 50

EB 2172 EN

Servicing

Type 2436 Valve

7

35

1.1

3

1

22

5

1.2
38
28

47

40

41

53
52

42

51

43

50
48
44
45
46
Type 2430 Control Thermostat

1
1.1
1.2
3
5
7

Plug assembly
Balancing bellows
Plug stem
Body
Seat
Seal

22
28
35
38
40
41

Valve spring
Seal
Stopper
Guide nipple
Coupling nut
Lead-seal hole

42 Set point spring
43 Set point adjuster
44 Operating bellows
Pin of operating ele45ment
46 Operating element

47
48
50
51
52
53

Capillary tube
Temperature sensor
Thermowell (optional)
Packing
GasketScrew

Fig. 9-2: Functional diagram of regulator, DN 15 to 25 · G ½ to 1

EB 2172 EN

9-3

Servicing

9.1 Service work preparations
1. Lay out the necessary material and tools
to have them ready for the service work.
2. Put the regulator out of operation (seethe 'Decommissioning' chapter).
Tip
SAMSON recommends removing the regulator from the pipeline before performing any
service work (see the 'Removing the regulator from the pipeline' chapter).
The following service work can be performed after preparation is completed:− Clean and exchange the seat and plug(see Chapter 9.4)

9.2 Installing the regulator
after service work
Î Put the regulator back into operation (seethe 'Start-up' chapter). Make sure the requirements and conditions for start-up or
putting the valve back into operation aremet.

9.4 Cleaning and exchanging
the seat and plug
! NOTICE
Risk of regulator damage due to over- or
under-torquing.
Observe the specified torques when tightening regulator components. Excessive tightening torques lead to parts wearing out more
quickly. Parts that are too loose may cause
leakage.
Observe the specified tightening torques.
! NOTICE
Risk of damage to the facing of the seatand plug due to incorrect service or repair.
Always replace both the seat and plug.
Note
SAMSON's After-sales Service can support
you concerning lubricant, tightening torques
and tools approved by SAMSON.
Î See Fig. 9-1 and Fig. 9-2

9.3 Service work
Î Before performing any service work,
preparations must be made to the regulator (see Chapter 9.1).
Î After all service work is completed, checkthe regulator before putting it back into
operation (see section 'Testing the regulator' in the 'Installation' chapter).

Valve disassembly (DN 15 to 25)
1. Unscrew the coupling nut (40) from thevalve and remove the control thermostat.
2. Remove the valve from the pipeline.
3. Unscrew the stopper (35) with socket
wrench (width across flats A/F 19) 1).
4. Remove the seal (7).

9-4

EB 2172 EN

Servicing

5. Pull out plug assembly (1).
6. Thoroughly clean the seat (5) and plug(1). If the plug, balancing bellows or thesurface of the plug stem (1.2) is damaged, replace the entire unit with a newone.
7. When the surface of the plug stem (1.2)
or plug (1) is damaged, unscrew theguide nipple (38) with an Allen key(width across flats A/F 19) 1). Remove
the seal (28). Replace plug (1), guidenipple (38) and seal (28) with new parts.
8. Unscrew the seat (5) using a seat wrench1)
if the seat facing is damaged. Replacewith a new one.
Valve disassembly (DN 32 to 50)
1. Unscrew the coupling nut (40) from thevalve and remove the control thermostat.
2. Remove the valve from the pipeline.
3. Unscrew the stopper (35) with Allen key(width across flats A/F 39) 1).
4. Remove the seal (7).
5. Pull out plug assembly (1) together withguide bushing (10).
6. Thoroughly clean the seat (5) and plug(1). If the plug or balancing bellows isdamaged, replace the entire unit with a
new one.
7. Pull out the pin (13). When the surface ofthe pin (13) is damaged, unscrew theguide nipple (38) with an Allen key(width across flats A/F 19) 1). Remove
the seal (28). Replace pin (13), guidenipple (38) and seal (28) with new parts.

EB 2172 EN

8. Unscrew the seat (5) using a seat
wrench 1) if the seat facing is damaged.
Replace with a new one.

Valve assembly (DN 15 to 25)
1. Screw in the seat (5) using a seat wrench
1). Observe the specified tightening
torques (see the 'Tightening torques'chapter in the Appendix).
2. Insert new seal (28) and screw in theguide nipple (38) with an Allen key(width across flats A/F 19) 1). Observe
the specified tightening torques (see the'Tightening torques' chapter in the
Appendix).
3. Insert plug assembly (1) together withplug stem (1.2) into the guide nipple(38).
4. Insert a new seal (7) into the body.
5. Screw in the stopper (35) with socket
wrench (width across flats A/F 19) 1).
Observe the specified tightening torques(see the 'Tightening torques' chapter inthe Appendix).
6. Install the valve into the pipeline.
7. Fasten the control thermostat on the valve
using the coupling nut (40).
Valve assembly (DN 32 to 50)
1. Screw in the seat (5) using a seat
wrench 1). Observe the specified tighten-

1)

Contact SAMSON concerning the special tool.

9-5Servicing

ing torques (see the 'Tightening torques'chapter in the Appendix).
2. Insert new seal (28) and screw in theguide nipple (38) with an Allen key(width across flats A/F 19) 1). Observe
the specified tightening torques (see the'Tightening torques' chapter in the Appendix).

9.5 Ordering spare parts andoperating supplies
Contact your nearest SAMSON subsidiaryor SAMSON's After-sales Service for information on spare parts, lubricants and tools.
Spare parts

3. Insert pin (13) into the guide nipple (38).

See the Appendix for details on spare parts.

4. Insert plug assembly (1) together withguide bushing (10) into the body.

Lubricants

5. Insert a new seal (7) into the body.
6. Screw in the stopper (35) with socket
wrench (width across flats A/F 19) 1).
Observe the specified tightening torques(see the 'Tightening torques' chapter inthe Appendix).

Contact SAMSON's After-sales Service formore information on lubricants.
Tools
Contact SAMSON's After-sales Service formore information on tools.

7. Install the valve into the pipeline.
8. Fasten the control thermostat on the valve
using the coupling nut (40).

1)

Contact SAMSON concerning the special tool.

9-6

EB 2172 EN

Decommissioning

10 Decommissioning
The work described in this chapter is only tobe performed by personnel appropriately
qualified to carry out such tasks.
! DANGER
Risk of bursting due to incorrect opening ofpressurized equipment or components.
Regulators and pipelines are pressure
equipment that may burst when handledincorrectly. Flying projectile fragments or the
release of process medium under pressure
can cause serious injury or even death.
Before working on the regulator:
Î Depressurize all plant sections concerned
and the regulator.
Î Shut off an external control line.
Î Drain the process medium from all theplant sections affected as well as the regulator.
! WARNING
Risk of burn injuries due to hot or cold
components and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn injuries.
Î Allow components and pipelines to cool
down or warm up to the ambient temperature.
Î Wear protective clothing and safety
gloves.

EB 2172 EN! WARNING
Risk of personal injury due to pressurizedcomponents and process medium being
discharged.
Î Do not loosen the external control line
while the valve is pressurized.
! WARNING
Risk of hearing loss or deafness due to loudnoise.
Noise emission (e.g. cavitation or flashing)
may occur during operation caused by theprocess medium and the operating conditions.
Î Wear hearing protection when working
near the valve. Follow the instructions
given by the plant operator.
! WARNING
Risk of personal injury due to residual
process medium in the regulator.
While working on the regulator, residual
process medium can escape and, depending
on its properties, may lead to personal injury, e.g. (chemical) burns.
Î Wear protective clothing, safety gloves
and eye protection.

10-1

Decommissioning

To decommission the regulator for service
work or disassembly, proceed as follows:
1. Close the shut-off valve (1 and 6) on thedownstream and upstream side of theregulator.
2. Close any shut-off valve installed on thedownstream and upstream side of thesensor if a thermowell is not used.
3. Completely drain the pipelines and regulator.
4. Depressurize the plant.
5. If necessary, allow the pipeline and regulator components to cool down or warm
up to the ambient temperature.

10-2

EB 2172 EN

Removal

11 Removal
The work described in this chapter is only tobe performed by personnel appropriately
qualified to carry out such tasks.
! WARNING
Risk of burn injuries due to hot or cold
components and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn injuries.
Î Allow components and pipelines to cool
down or warm up to the ambient temperature.
Î Wear protective clothing and safety
gloves.

11.1 Removing the control thermostat
1. Pull the sensor out of the thermowell. In
cases where a thermowell is not used,unscrew the screw gland and pull out thesensor.
2. Unscrew the control thermostat from thevalve (width across flats 36).

11.2 Removing the valve fromthe pipeline
1. Support the regulator to hold it in placewhen separated from the pipeline (seethe 'Shipment and on-site transport'
chapter).
2. Unbolt the pipe/flange joint.

! WARNING
Risk of personal injury due to residual
process medium in the regulator.
While working on the regulator, residual
process medium can escape and, depending
on its properties, may lead to personal injury, e.g. (chemical) burns.
Î Wear protective clothing, safety gloves
and eye protection.

3. Remove the regulator from the pipeline(see the 'Shipment and on-site transport'
chapter).

Before removing the valve, make sure thefollowing conditions are met:
− The regulator is put out of operation (seethe 'Decommissioning' chapter).

EB 2172 EN

11-1

Removal

11-2

EB 2172 EN

Repairs

12 Repairs
If the regulator does not function properly
according to how it was originally sized ordoes not function at all, it is defective andmust be repaired or exchanged.
! NOTICE
Risk of regulator damage due to incorrect
service or repair work.
Î Do not perform any repair work on yourown.
Î Contact SAMSON's After-sales Service
for repair work.

12.1 Returning devices to
SAMSON
Defective devices can be returned to
SAMSON for repair.
Proceed as follows to return devices:
1. Exceptions apply concerning somespecial device models
u www.samsongroup.com > Service >After-sales Service.

–
–
–
–
–

Type
Article no.
Material number
Original order
Completed Declaration on
Contamination, which can be
downloaded from our website atu www.samsongroup.com > Service> After-sales Service.

After checking your registration, we will
send you a return merchandise authorization (RMA).
3. Attach the RMA (together with the
Declaration on Decontamination) to theoutside of your shipment so that the
documents are clearly visible.
4. Send the shipment to the address givenon the RMA.
Note
Further information on returned devices andhow they are handled can be found at
u www.samsongroup.com > Service > Aftersales Service.

2. Send an e-mail u retouren@
samsongroup.com to register the return
shipment including the following
information:

EB 2172 EN

12-1

Repairs

12-2

EB 2172 EN

Disposal

13 Disposal

Tip
SAMSON is a producer
registered at the following
European institution u https://www.samsongroup.com/en/
about-samson/environmentsocial-governance/materialcompliance/waste-electricaland-electronic-equipment-weeeand-its-safe-disposal/.
WEEE reg. no.: DE 62194439

On request, SAMSON can appoint a service
provider to dismantle and recycle the product as part of a distributor take-backscheme.

Information on substances listed as substances of very high concern (SVHC) on the candidate list of the REACH regulation can befound in the document "Additional Information on Your Inquiry/Order", which is added
to the order documents, if applicable. This
document includes the assigned SCIP number, which can be entered into the databaseon the European Chemicals Agency (ECHA)
website (uhttps://www.echa.europa.eu/
scip-database ) to find out more informationon the SVHC.
Î Observe local, national and international refuse regulations.
Î Do not dispose of components, lubricantsand hazardous substances together withyour other household waste.
Note
SAMSON can provide you with a recycling passport according to PAS 1049
on request. Simply e-mail us ataftersalesservice@samsongroup.com giving
details of your company address.

EB 2172 EN

13-1

Disposal

13-2

EB 2172 EN

Certificates

14 Certificates
The EU declarations of conformity are included on the next pages:− EU declaration of conformity in compliance with Pressure Equipment Directive
2014/68/EU on page 14-2.

EB 2172 EN

14-1

Certificates

Modul H/Module H, Nr./No. / N° CE-0062-PED-H-SAM 001-16-DEU-rev-A
SAMSON erklärt in alleiniger Verantwortung für folgende Produkte:/For the following products, SAMSON hereby declares
under its sole responsibility:
Ventile für Temperaturregler/Valves for temperature regulators
Typ/Type 2431, 2432, 2435, 2436, 2437 (Erz.-Nr./Model No. 2710)
die Konformität mit nachfolgender Anforderung/the conformity with the following requirement.
Richtlinie des Europäischen Parlaments und des Rates zur Harmonisierung der Rechtsvorschriftender Mitgliedstaaten über die Bereitstellung von Druckgeräten auf dem Markt.

2014/68/EU

vom 15.05.2014

Directive of the European Parliament and of the Council on the harmonization of the laws of theMember States relating of the making available on the market of pressure equipment.

2014/68/EU

of 15 May 2014

Angewandtes Konformitätsbewertungsverfahren für Fluide nach Art. 4(1)(c.i) erster Gedankenstrich.

Modul siehe
TabelleSee table formoduledurch
certified by
Bureau Veritas
S. A. (0062)

Conformity assessment procedure applied for fluids according to Article 4(1)(c.i), first indent.
NenndruckPressure rating
PN 16 (3) / PN 25
PN 40
Class 150
Class 300

DN
NPS

15
½

20
¾

25
1

32
1¼

ohne (1)ohne (1)ohne (1)ohne (1)

40
1½

50
2

65
-

80
3

100
4

A (2)(4)

125
-

150
6

200
8

250
10

300
12

H
A (2)(4)

400
16

-

H
H
H

(1) Das auf dem Stellgerät aufgebrachte CE-Zeichen hat keine Gültigkeit im Sinne der Druckgeräterichtlinie.
The CE marking affixed to the control device does not refer to the Pressure Equipment Directive.
(2) Das auf dem Stellgerät aufgebrachte CE-Zeichen gilt ohne Bezeichnung der Notifizierten Stelle (Kennr. 0062).
The CE marking affixed to the control device is valid, but does not refer to the notified body (ID No. is invalid).
(3) DN 15 auch in PN 16 lieferbar.
DN 15 as well in PN deliverable.

EU-Konformitaetserklaerung_Blatt-09_Modul-A_Modul-H_DE-EN_Rev.03_2017-02-08.docx(4) Die Identifikationsnummer 0062 von Bureau Veritas S.A. gilt nicht für Modul A.
The identification number 0062 of Bureau Veritas S.A. is not valid for Modul A.

1

14-2

Geräte, denen laut Tabelle das Konformitätsbewertungsverfahren Modul H zugrunde liegt, beziehen sich auf die„Zulassungsbescheinigung eines Qualitätssicherungssystems“ ausgestellt durch die benannte Stelle.
Devices whose conformity has been assessed based on Module H refer to the certificate of approval for the quality management system
issued by the notified body.

Dem Entwurf zu Grunde gelegt sind Verfahren aus:/The design is based on the procedures specified in the following standards:
DIN EN 12516-2, DIN EN 12516-3 bzw./or ASME B16.24, ASME B16.34
Das Qualitätssicherungssystem des Herstellers wird von folgender benannter Stelle überwacht:
The manufacturer’s quality management system is monitored by the following notified body:
Bureau Veritas S.A. Nr./No. 0062, Newtime, 52 Boulevard du Parc, IIle de la Jatte, 92200 Neuilly sur Seine, France
Hersteller:/Manufacturer: SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 08. Februar 2017/08 February 2017

Klaus Hörschken
Zentralabteilungsleiter/Head of Central Department
Entwicklung Ventile und Antriebe/R&D, Valves and Actuators
SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 60314 Frankfurt am Main

Dr. Michael Heß
Zentralabteilungsleiter/Head of Central Department
Product Management & Technical Sales
Telefon: 069 4009-0 · Telefax: 069 4009-1507
E-Mail: samson@samson.de

Revision 03

EB 2172 EN

Certificates

Modul H/Module H, Nr./No. / N° CE-0062-PED-H-SAM 001-16-DEU-rev-A
SAMSON erklärt in alleiniger Verantwortung für folgende Produkte:/For the following products, SAMSON hereby declares
under its sole responsibility:
Ventile für Temperaturregler/Valves for temperature regulators
Typ/Type 2111, 2121, 2431, 2432, 2435, 2436, 2437 (Erz.-Nr./Model No. 2710), 2433, 2118 (2713), 2119 (2803), 2111, 2121 (2811), 2114
(2814)
die Konformität mit nachfolgender Anforderung/the conformity with the following requirement.
Richtlinie des Europäischen Parlaments und des Rates zur Harmonisierung der Rechtsvorschriftender Mitgliedstaaten über die Bereitstellung von Druckgeräten auf dem Markt.

2014/68/EU

vom 15.05.2014

Directive of the European Parliament and of the Council on the harmonization of the laws of theMember States relating of the making available on the market of pressure equipment.

2014/68/EU

of 15 May 2014

Angewandtes Konformitätsbewertungsverfahren für Fluide nach Art. 4(1)(c.ii) und (c.i) zweiter
Gedankenstrich.

Modul siehe
TabelleConformity assessment procedure applied for fluids according to Article 4(1)(c.ii) and (c.i), second
indentSee table formoduledurch
certified by
Bureau Veritas
S. A. (0062)

NenndruckPressure rating
PN 16
PN 25
PN 40
Class 150
Class 300

DN
NPS

15
½

20
¾

25
32
40
50
65
1
1¼
1½
2
ohne/without (1)ohne/without (1)A (2)(3)ohne/without (1)A (2)(3)ohne/without (1)A (2)(3)ohne/without (1)A (2)(3)

80
100
3
4
A (2)(3)

125

H

150
6

200
8
H

H

H

250
10

H

(1) Das auf dem Stellgerät aufgebrachte CE-Zeichen hat keine Gültigkeit im Sinne der Druckgeräterichtlinie.
The CE marking affixed to the control valve is not valid in the sense oft the Pressure Equipment Directive.
(2) Das auf dem Stellgerät aufgebrachte CE-Zeichen gilt ohne Bezeichnung der benannten Stelle (Kenn-Nr. 0062).
The CE marking affixed to the control valve is valid without specifying the notified body (ID number 0062).
(3) Die Identifikationsnummer 0062 von Bureau Veritas S.A. gilt nicht für Modul A.
The identification number 0062 of Bureau Veritas S.A. is not valid for Modul A.
EU-Konformitaetserklaerung_Blatt-05_Modul-A_Modul-H_DE-EN_Rev.03_2017-02-08.docx

Geräte, denen laut Tabelle das Konformitätsbewertungsverfahren Modul H zugrunde liegt, beziehen sich auf die„Zulassungsbescheinigung eines Qualitätssicherungssystems“ ausgestellt durch die Notifizierte Stelle.
Devices whose conformity has been assessed based on Module H refer to the certificate of approval for the quality management system
issued by the notified body.

Dem Entwurf zu Grunde gelegt sind Verfahren aus:/The design is based on the procedures specified in the following standards:
DIN EN 12516-2, DIN EN 12516-3 bzw./or ASME B16.1, ASME B16.24, ASME B16.34, ASME B16.42
Das Qualitätssicherungssystem des Herstellers wird von folgender benannter Stelle überwacht
The manufacturer’s quality management system is monitored by the following notified body:
Bureau Veritas S.A. Nr./No. 0062, Newtime, 52 Boulevard du Parc, IIle de la Jatte, 92200 Neuilly sur Seine, France
Hersteller:/Manufacturer: SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 08. Februar 2017/08 February 2017

Klaus Hörschken
Zentralabteilungsleiter/Head of Central Department
Entwicklung Ventile und Antriebe/R&D, Valves and Actuators
SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 60314 Frankfurt am Main

EB 2172 EN

Dr. Michael Heß
Zentralabteilungsleiter/Head of Central Department
Product Management & Technical Sales
Telefon: 069 4009-0 · Telefax: 069 4009-1507
E-Mail: samson@samson.de

Revision 03

14-3

Certificates14-4

EB 2172 EN

Appendix

15 Appendix
15.1 Tightening torques
Table 15-1: Tightening torqueComponent

Seat (5)

Width acrossflats

Valve size

Tightening
torque in Nm–

G ½ to G 1 · DN 15 to 25½ NPT to 1 NPT45–

DN 32 to 50

110

A/F 19G ½ to G 1 · DN 15 to 25½ NPT to 1 NPT

40

A/F 39DN 32 to 50

110

A/F 19G ½ to G 1 · DN 15 to 25½ NPT to 1 NPT80

DN 32 to 50

110

All

20

Stopper (35)

Guide nipple (38)
Coupling nut (40)A/F 3615.2 Tools
Tool
Plug wrench

Seat wrench

Valve size

Seat bore

Order no.

G ½ to G 1 · DN 15 to 25½ NPT to 1 NPT–

1280-3001

DN 32 to 50–

1280-3007

G ½ to G 1 · DN 15 to 25½ NPT to 1 NPT

Seat bore 4 to 12

9932-3322

Seat bore 20

1280-3013

DN 32 to 50

Seat bore 40

1280-3014

15.3 Lubricants
SAMSON's After-sales Service can support
you concerning lubricants and sealants approved by SAMSON.

EB 2172 EN

15-1

Appendix

15.4 Spare parts

Type 2436 ValveRed brass body · DN 32 to 50
Spheroidal graphite iron body · Flanges
DN 32 to 50

Type 2436 ValveRed brass body · G ½ to 1 · DN 15 to 25
Stainless steel body · G ½ to 1 · ½ to 1 NPT
Spheroidal graphite iron body · Flanges · DN 15
to 25
Stainless steel body · Flanges · DN 15 and 25

35
7
10
22

35

3

7

1
5

22
3

13

1

26

5

28
38

28
38

15-2

1

Plug assembly

3

Body

5

Seat

7

Seal

10

Guide bushing

13

Pin

22

Valve spring

26

Retaining washer

28

Seal

35

Stopper

38

Guide nipple

EB 2172 EN

Appendix

15.5 After-sales service
Contact SAMSON's After-sales Service forsupport concerning service or repair work or
when malfunctions or defects arise.
E-mail address
You can reach our after-sales service ataftersalesservice@samsongroup.com.
Addresses of SAMSON AG and its subsidiaries
The addresses of SAMSON, its subsidiaries,
representatives and service facilities
worldwide can be found on our website(u www.samsongroup.com) or in all
SAMSON product catalogs.
Required specifications
Please submit the following details:− Type and nominal size of the valve− Type ... Control Thermostat− Model number or material number− Upstream and downstream pressure− Temperature and process medium− Min. and max. flow rate in m³/h
− Is a strainer installed?
− Installation drawing showing the exact
location of the regulator and all the additionally installed components (shut-off
valves, pressure gauge etc.)

EB 2172 EN

15-3

Appendix

15-4

EB 2172 EN

SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507
samson@samsongroup.com · www.samsongroup.com

2024-09-04 · English

EB 2172 EN