EB 2046 EN
Translation of original instructions

Safety Temperature Limiters (STL) with Type 2212 Safety Thermostat

Safety Temperature Limiters (STL) with Type 2212 Safety Thermostat
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).

Documents relating to the device, such as the mounting and operating
instructions, are 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 2046 EN

Contents

1

General safety instructions..............................................................................4

2

Process medium and scope of application........................................................53

Transportation and storage.............................................................................5

4

Design and principle of operation...................................................................55Installation.....................................................................................................6

5.1

Installing the valve...........................................................................................8

5.2

Strainers........................................................................................................8

5.3

Additional mounting instructions......................................................................8

5.4
5.4.1

Temperature sensor.........................................................................................8
Capillary tube................................................................................................9

5.5
5.5.1

Additional electric unit....................................................................................9
Electric signal transmitter.................................................................................96

Start-up and operation...................................................................................9

6.1

Limit adjustment..............................................................................................9

6.2

Unlocking after a fault...................................................................................10

6.3
6.3.1

Special version of Type 2401 Pressure Element................................................11
Unlocking the Type 2401 Pressure Element......................................................11

6.4

Servicing......................................................................................................11

6.5

Disposal.......................................................................................................12

6.6

Returning devices to SAMSON......................................................................12

7

Certificates...................................................................................................13

7.1

Information on the UK sales region.................................................................13

8

Markings on the device................................................................................20

8.1

Nameplate of Type 2212 Safety Thermostat....................................................20

8.2

Valve nameplate...........................................................................................20

8.3

Location of the nameplate..............................................................................20

8.4

Material identification number.......................................................................20

9

Technical data..............................................................................................21

10

Dimensions..................................................................................................22

EB 2046 EN

General safety instructions

1 General safety instructions− The device must be mounted, started up or serviced by fully trained andqualified personnel only; the accepted industry codes and practices are tobe observed. Make sure employees or third parties are not exposed to any
danger.
− All safety instructions and warnings given in these mounting and operating
instructions, particularly those concerning installation, start-up, and maintenance, must be strictly observed.
− According to these mounting and operating instructions, trained personnel
refers to individuals who are able to judge the work they are assigned toand recognize possible dangers due to their specialized training, theirknowledge and experience as well as their knowledge of the applicablestandards.
− The device complies with the requirements of the European Pressure
Equipment Directive 2014/68/EU, Machinery Directive 2006/42/EC,
Directive 2016 No. 1105 Pressure Equipment (Safety) Regulations 2016
and Directive 2008 No. 1597 Supply of Machinery (Safety)
Regulations 2008. Valves with a CE marking and/or UKCA marking have adeclaration of conformity, which includes information about the applied
conformity assessment procedure.
− To ensure appropriate use, only use the device in applications where the operating pressure and temperatures do not exceed the specifications used forsizing the device at the ordering stage.
− The manufacturer does not assume any responsibility for damage caused byexternal forces or any other external factors.
− Any hazards that could be caused in the temperature regulator by the process medium, operating pressure or by moving parts are to be prevented bytaking appropriate precautions.
− Proper transport, storage, installation, operation and maintenance are assumed.
Testing according to DIN EN
The Type 2212 Safety Temperature Limiter combined with Types 2111,
2422 and 2119 Valves has been tested by the German technical surveillance association TÜV according to DIN EN 14597. The registration
number is available on request.

4

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Process medium and scope of application

2 Process medium and scope of
application
Safety temperature limitation of the energy
supply to heat generators or heat exchangers by closing and locking a valve. Additional pressure limitation if equipped with pressure element.
For limit signals from 10 to 170 °C · Valves
DN 15 to 150 · PN 16 to 40 · Max. 350 °C

3 Transportation and storage
The device must be carefully handled, transported and stored. Protect the device against
adverse influences, such as dirt, moisture ortemperature outside the permissible ambient
temperature range.

4 Design and principle of operation
See Fig. 2 on page 7.
The safety temperature limiter (STL) is used tolimit the temperature by closing and locking
a SAMSON Type 2111, 2422 or 2119
Valve connected to the thermostat.

The temperature of the measured medium
creates a pressure in the sensor (9) which is
proportional to the measured temperature.
This pressure is transferred to an operating
bellows through a capillary tube (10) where
it is converted into a positioning force andcompared to the force of the set point spring.
The spring force depends on the temperature
limit adjusted at the set point adjuster (11).
When the temperature exceeds the adjusted
limit value, the spring mechanism in the connecting element (8) is released. This causes apin (6) to move the plug stem (5) to close
and lock the valve. The valve closes when thecapillary tube ruptures or the sensor leaks.
They can only be reset and put back into operation after the fault has been remediedand the temperature falls below the limit byapprox. 10 K.
Note
The Type 2212 Safety Temperature Limiter
requires no maintenance. For example, themoving parts in the connecting element do
not need to be lubricated.

The safety temperature limiter consists of aconnecting element with spring mechanism(8), a thermostat with capillary tube (10)and a temperature bulb sensor with thermowell (9). The connection of an additional
thermostat converts the safety temperature
limiter (STL) into a temperature regulator withsafety temperature limiter (TR/STL).

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5

Installation

5 Installation
See Fig. 2 on page 7.
The safety temperature limiter is always installed in the plant in combination with avalve to form an STL or additionally with atemperature regulator to form a TR/STL. The
connecting element with spring mechanism(8) can be connected to the valve either before or after the valve is installed in the pipeline.
On installation, make sure that the temperature does not exceed the max. permissible
ambient temperature of 80 °C.

If the safety thermostat is used in combination with Series 42 Differential Pressure andFlow Regulators (see TV-SK 7770 document),a separating piece must be mounted on theoperating element of the thermostat to connect the actuator (Types 2424, 2427, 2428
and 2429 with force limiter). See Table 1.
Note
Before installation, remove the snap ring on
the pin of the separating piece.

STL

TR/PL
STL

TR

STL

Type 2212
Type 2212

Type 2212
Signal transmitter

Type 2231

Type 2231
Safety temperature limiters (STL)
with temperature regulators (TR)Fig. 1:

6

Safety temperature limiter (STL) with
(optional) signal transmitter

Type 2401 Pressure
Element
Safety temperature limiters (STL)
with temperature regulators (TR)and (optional) Type 2401 Pressure
Element

Versions of the safety temperature limiter (STL)EB 2046 EN

Installation

1

2
Type 2422 Valve

3
4
4.1

1

Valve body2

Seat (exchangeable)

3

Plug

4

Bellows housing

4.1 Metal bellows

5
6
7

9
10

5

Plug stem with spring

Type 2212 Safety Thermostat
6

Pin of operating element

7

Coupling nut (connection valve/connecting
element)

8Connecting element with spring mechanism

9

Temperature sensor with thermowell

10 Capillary tube

8

11 Set point adjuster to adjust limit
12

Connection for control thermostat (TR/STL
only)

12

11

Fig. 2:

Safety temperature limiter (STL) with Type 2422 Globe Valve

Table 1: Separating pieces
Version with separating
piece

Order no.

Brass · For water

1190-9948

Stainless steel · For water

1590-7703

Stainless steel · For oil

1590-7704

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7

Installation

5.1 Installing the valve
Choose a place of installation that allows
you to freely access the regulator even after
the entire plant has been completed.
Flush the pipeline thoroughly before installing the safety temperature limiter with valve.
Install a strainer upstream of the regulator toprevent any sealing parts, weld spatter andother impurities carried along by the process
medium impairing the proper functioning of
the valve, above all the tight shut-off.
Note
Install the valve in a horizontal pipeline withthe operating element connection suspended
downward.
− Install the valve free of stress and with theleast amount of vibrations as possible. If
necessary, support the pipelines near theconnections.

5.2 Strainers
Install a strainer (e.g. SAMSON Type 2 NI)
upstream of the valve to prevent any sealing
parts, weld spatter and other impurities carried along by the process medium impairing
the proper functioning of the valve, above all
the tight shut-off.
The filter element must be installed to hang
downward. Remember to leave enoughspace to remove the filter element.

5.3 Additional mounting
instructions
We recommend installing a hand-operated
shut-off valve upstream of the strainer anddownstream of the regulator to be able toshut down the plant for cleaning and maintenance and when the plant is not used for
longer periods of time.
To check the adjusted limit, we recommend
installing a thermometer immersed in themedium to be controlled near the sensor.

5.4 Temperature sensor
Note
Do not separate the thermostat and operating element (with capillary tube and temperature sensor).
The temperature sensor with a thermowellmay be installed in any position. However,make sure its entire length is immersed in theprocess medium to be controlled. It must be
installed in a location where overheating or
considerable idling times cannot occur.
! 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).
Weld a welding socket with G 1 female
thread at the place of installation. Seal the8

EB 2046 EN

Start-up and operation

thermowell into the welding socket. Insert thesensor and tighten it with the clamping
screw.
Note
For temperature regulators with safety temperature limiter (TR/STL), install the sensor of
the limiter near the sensor of the regulator.

Brown: unlocked
Black
Blue or red 1)
locked1)

5.4.1

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.
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.

5.5 Additional electric unit
The safety temperature limiter can be fittedwith an electric signal transmitter.

5.5.1

Electric signal transmitter

The signal transmitter contains a microswitch
which generates a signal if the temperature
limit is exceeded or if the sensor fails (capillary tube ruptures).

EB 2046 EN

Depending on date of manufacture

Fig. 3:Circuit diagram for signal transmitter

6 Start-up and operation
Fill the plant very slowly with the process medium on start-up.
! NOTICE
Malfunction and damage due to adverse
weather conditions (temperature, humidity).
Do not install the temperature regulator outdoors or in rooms prone to frost. If such a location cannot be avoided, protect the regulator against freezing up if the process medium flowing through the valve can freeze up.
Either heat the regulator or remove it fromthe plant and completely drain the residual
medium.

6.1 Limit adjustment
The safety temperature limiter is adjusted to
the limit value specified in the order.

9

Start-up and operation

If no value has been specified, the range
from 10 to 95 °C is set to 90 °C, the range
from 20 to 120 °C to 110 °C and the range
from 40 to 170 °C to 150 °C.
If another temperature limit is to be adjusted,turn the black plastic ring according to thescale (see Table 2).
− Turn clockwise () to reduce the temperature− Turn counterclockwise () to increase thetemperature
Table 2: Limit adjustment
20 to
120 °C40 to
170 °C0~10 °C~20 °C~40 °C1~35 °C~40 °C~55 °C2~55 °C~65 °C~95 °C

3

Limit range
10 to
95 °C

~75 °C~95 °C~135 °C

4

Scale marking~95 °C ~125 °C ~180 °C

Change of limit
range
Changes per turn
in K

~3.2

~3.9

~5.6

Note
Before adjusting the limit value, the safety
temperature limiter must be mounted on thevalve.

For precise adjustment, first set the maximum
set point by turning the black plastic ringcounterclockwise (). Immerse the temperature sensor for at least five minutes in a temperature bath heated to the corresponding
temperature limit. Afterwards, reduce the set
point by slowly turning the black plastic ringclockwise () until the temperature limit isreached and the spring mechanism is triggered.

6.2 Unlocking after a fault
The valve is locked when the pin has moved
to the top of the inspection window of theconnecting element (see Fig. 4).
Unlock the valve at the lever (Fig. 4) after thefault has been remedied. Position the lever
and move it upward.
Note
The valve can only be unlocked after thetemperature limit has fallen below the adjusted limit value by at least 10 K.
Note
If the hydraulic system of the Type 2212 isdefective (pressure loss), the STL cannot be
unlocked as a result. It must be replaced witha new device.

The setting is continuously adjustable. A turncorresponds to approx. 3.2 K, 3.9 K or
5.6 K depending on the limit range (see Table 2).

10

EB 2046 EN

Start-up and operation

Position
LockedPin

Unlocking

Lever for unlocking

Lever
Order no.: 1490-7399
Fig. 4:

Unlocking the safety temperature limiter with the lever

6.3 Special version ofType 2401 Pressure Element

Safety pressure limiters: unlocking only at apressure of 1 bar or more and after the pressure exceeds the adjusted pressure limit by
0.5 barPressure limiters (PL): unlocking after thepressure exceeds the adjusted pressure limit.

6.4 Servicing

Safety pressure limiters: unlocking after thepressure exceeds the adjusted pressure limit
and upon pressure failure

When the connecting element of the safety
temperature limiter is defective, the springmechanism can no longer be compressed.

6.3.1

Contact SAMSON's After-sales Service forsupport concerning service or repair work or
when malfunctions or defects arise.

Unlocking theType 2401 Pressure
Element

Pressure limiters (PL): unlocking after thepressure falls below the limit by 0.5 bar.

EB 2046 EN

11

Start-up and operation

E-mail: aftersalesservice@samson.de
Addresses of SAMSON AG and its subsidiaries
The addresses of SAMSON AG, its subsidiaries, representatives and service facilities
worldwide can be found on the SAMSON
website (u www.samsongroup.com), in all
SAMSON product catalogs or on the backof these Mounting and Operating Instructions.
Observe the following points on installing or
removing the regulator from the pipeline:! WARNING
Risk of injury due to process medium escaping possibly under pressure.
Depressurize the relevant section of the pipeline and, if necessary, drain it as well. Whenused at high temperatures, allow the plant
section to cool down to ambient temperature.

6.5 Disposal
We are registered with the German national register for waste
electric equipment (stiftung ear)as a producer of electrical andelectronic equipment,
WEEE reg. no.: DE 62194439

Î Observe local, national and international refuse regulations.
Î Do not dispose of components, lubricantsand hazardous substances together withyour other household waste.

12

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.
Tip
On request, SAMSON can appoint a service
provider to dismantle and recycle the product.

6.6 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.
2. Send an e-mail u retouren@
samsongroup.com to register the return
shipment including the following
information:− Type− Material number− Item numbers of accessories− Original order− Completed Declaration on
Contamination, which can be
downloaded from our website at

EB 2046 EN

Certificatesu 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 the outside 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.

7 Certificates
The EU and UKCA declarations of conformity are included on the next pages.

7.1 Information on the UK
sales region
The following information corresponds to thePressure Equipment (Safety) Regulations
2016, STATUTORY INSTRUMENTS,
2016 No. 1105 (UKCA marking). It does
not apply to Northern Ireland.
Importer
SAMSON Controls Ltd
Perrywood Business Park
Honeycrock Lane
Redhill, Surrey RH1 5JQ
Phone: +44 1737 766391
E-mail: sales-uk@samsongroup.com
Website: uk.samsongroup.com

EB 2046 EN

13

Start-up and operation

Module D, No. / N° CE-0062-PED-D-SAM 001-22-DEU
For the following products, SAMSON hereby declares under its sole responsibility:
Safety Temperature Limiters STL 2212
combined with valves
2111, 2114, 2118, 2119, 2421, 2422, 2423, 2423E, 2710 (2803, 2811, 2814, 2823)
the conformity with the following requirement.
Directive of the European Parliament and of the Council on the harmonization of the laws of the Member
States relating of the making available on the market
of pressure equipment.

2014/68/EU

of 15 May 2014

EC Type Examination Certificate

Module B

Certificate no.
01 202 931-B-15-0031

Conformity assessment procedure applied

Module D

Certificate no.
CE-0062-PED-D-SAM-001-22-DEU

The design is based on the procedures specified in the following standards
DIN EN 12516-2, DIN EN 12516-3 or ASME B16.1, ASME B16.24, ASME B16.34, ASME B16.42
The manufacturer’s quality management system is monitored by the following notified body:

Bureau Veritas Services SAS, 8 Cours du Triangle, 92800 PUTEAUX – LA DEFENSE,France
Manufacturer: SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany

Frankfurt am Main, 01. December 2022

Norbert Tollas
Senior Vice President
Global OperationsPeter Scheermesser
Director
Product Maintenance & Engineered Products

Revision 05
Classification: Public · SAMSON AKTIENGESELLSCHAFT · Weismuellerstrasse 3 · 60314 Frankfurt am Main, Germany

14

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Start-up and operation

EU Konformitätserklärung / EU Declaration of Conformity /Déclaration UE de conformité
Die alleinige Verantwortung für die Ausstellung dieser Konformitätserklärung trägt der Hersteller/
This declaration of conformity is issued under the sole responsibility of the manufacturer/
La présente déclaration de conformité est établie sous la seule responsabilité du fabricant.
Für das folgende Produkt / For the following product / Nous certifions que le produit

Sicherheitstemperaturbegrenzer / Safety Temperatur Limiter /Limiteur de température de sécurité
Typ/Type/Type 2212
wird die Konformität mit den einschlägigen Harmonisierungsrechtsvorschriften der Union bestätigt /the conformity with the relevant Union harmonisation legislation is declared with/
est conforme à la législation d'harmonisation de l'Union applicable selon les normes:

EN 61000-6-2:2005, EN 61000-6-3:2007+A1:2011, EN 61326-1:2013

EMC 2014/30/EU
LVD 2014/35/EU

EN 60730-1:2016, EN 61010-1:2010

RoHS 2011/65/EU

EN 50581:2012

Hersteller / Manufacturer / Fabricant:
SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3D-60314 Frankfurt am Main
Deutschland/Germany/Allemagne

ce_2212-0_de_en_fra_rev07.pdf

Frankfurt / Francfort, 2017-07-29
Im Namen des Herstellers/ On behalf of the Manufacturer/ Au nom du fabricant.

Gert Nahler
Zentralabteilungsleiter/Head of Department/Chef du département
Entwicklung Automation und Integrationstechnologien/
Development Automation and Integration Technologies

SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 60314 Frankfurt am Main

EB 2046 EN

Hanno Zager
Leiter Qualitätssicherung/Head of Quality Managment/
Responsable de l'assurance de la qualité

Telefon: 069 4009-0 · Telefax: 069 4009-1507
E-Mail: samson@samson.de

Revison 07

15

Start-up and operation

Declaration of Incorporation in Compliance with Machinery Directive 2006/42/EC
For the following product:
Type 2212 Safety Thermostat
We certify that the Type 2212 Safety Thermostat is partly completed machinery as defined in the Machinery
Directive 2006/42/EC and that the safety requirements stipulated in Annex I, 1.1.2, 1.1.3, 1.1.5, 1.3.2, 1.3.4 and1.3.7 are observed. The relevant technical documentation described in Annex VII, part B has been compiled.
Products we supply must not be put into service until the final machinery into which it is to be incorporated has
been declared in conformity with the provisions of the Machinery Directive 2006/42/EC.
Operators are obliged to install the products observing the accepted industry codes and practices (goodengineering practice) as well as the mounting and operating instructions. Operators must take appropriate
precautions to prevent hazards that could be caused by the process medium and operating pressure in the valve
as well as by the signal pressure and moving parts.
The permissible limits of application and mounting instructions for the products are specified in the associatedmounting and operating instructions; the documents are available in electronic form on the Internet atwww.samsongroup.com.
For product descriptions refer to:
Safety Temperature Limiters (STL) with Type 2212 Safety Thermostat:
Mounting and Operating Instructions EB 2046
Referenced technical standards and/or specifications:
VCI, VDMA, VGB: "Leitfaden Maschinenrichtlinie (2006/42/EG) – Bedeutung für Armaturen, Mai 2018"[German only]
VCI, VDMA, VGB: "Zusatzdokument zum Leitfaden Maschinenrichtlinie (2006/42/EG) – Bedeutung für
Armaturen vom Mai 2018" [German only], based on DIN EN ISO 12100:2011-03
Comments:
See mounting and operating instructions for residual hazards.
Also observe the referenced documents listed in the mounting and operating instructions.

Persons authorized to compile the technical file:
SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 10 November 2021

Stephan Giesen

Director
Product Management

Peter Scheermesser

Director
Product Life Cycle Management and ETODevelopment for Valves and Actuators

Revision no. 00
Classification: Public · SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt, Germany

16

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17

Start-up and operation

The Pressure Equipment (Safety) Regulations 2016
Module D / N° CE-0062-PED-D-SAM 001-22-DEU
For the following products, SAMSON hereby declares under its sole responsibility:
Devices

Type

VersionSelf-operated Regulators

2212

Safety Temperature Limiter (STL)

The object of the declaration described above is in conformity with the relevant Union harmonization legislation:
Legislation: STATUTORY INSTRUMENTS – 2016 No. 1105 – CONSUMERPROTECTION HEALTH AND SAFETY – The Pressure Equipment (Safety)
Regulations 2016

PE(S)R 2016

2022

EU-Type Examination

Module B

Certificate-No.:
01 202 931-B-15-0031
by TÜV Rheinland 0035

Applied conformity assessment procedure for fluids according to
Article 4(1)Module D

Certificate-No.:
N°CE-0062-PED-D-SAM 001-22-DEU
by Bureau Veritas 0062

The manufacturer’s quality management system is monitored by the following approved body:
Bureau Veritas Services SAS, 8 Cours du Triangle, 92800 PUTEAUX – LA DEFENSE (No. 0062)
Designated Standards applied: EN 12516-2, EN 12516-3;
Other technical standards applied: ASME B16.1, ASME B16.24, ASME B16.34, ASME B16.42
Manufacturer:
SAMSON AKTIENGESELLSCHAFT, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 11th November 2022

Norbert Tollas
Senior Vice President
Global OperationsPeter Scheermesser
Director
Product Maintenance & Engineered Products

Revision 00
Classification: Public · SAMSON AKTIENGESELLSCHAFT · Weismüllerstrasse 3 · 60314 Frankfurt am Main, Germany

18

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Start-up and operation

Declaration of Incorporation of Partly Completed Machineryin accordance with Schedule 2 Part 2 Annex II, section 1.B. of the Directive 2008 No. 1597
Supply of Machinery (Safety) Regulations 2008
For the following product:
Type 2212 Safety Thermostat
We certify that the Type 2212 Safety Thermostat is partly completed machinery as defined in the in Directive
2008 No. 1597 Supply of Machinery (Safety) Regulations 2008 and that the safety requirements stipulated in
Annex I, 1.1.2, 1.1.3, 1.1.5, 1.3.2, 1.3.4 and 1.3.7 are observed. The relevant technical documentation describedin Annex VII, (Part 7 of Schedule 2) part B has been compiled.
Products we supply must not be put into service until the final machinery into which it is to be incorporated has
been declared in conformity with the provisions of the Directive 2008 No. 1597 Supply of Machinery (Safety)
Regulations 2008.
Operators are obliged to install the products observing the accepted industry codes and practices (good engineering practice) as well as the mounting and operating instructions. Operators must take appropriate precautions to prevent hazards that could be caused by the process medium and operating pressure in the valve as
well as by the signal pressure and moving parts.
The permissible limits of application and mounting instructions for the products are specified in the associatedmounting and operating instructions; the documents are available in electronic form on the Internet atwww.samsongroup.com.
For product descriptions refer to:
Safety Temperature Limiters (STL) with Type 2212 Safety Thermostat:
Mounting and Operating Instructions EB 2046
Referenced technical standards and/or specifications:
VCI, VDMA, VGB: "Leitfaden Maschinenrichtlinie (2006/42/EG) – Bedeutung für Armaturen, Mai 2018"[German only]
VCI, VDMA, VGB: "Zusatzdokument zum Leitfaden Maschinenrichtlinie (2006/42/EG) – Bedeutung für
Armaturen vom Mai 2018" [German only], based on DIN EN ISO 12100:2011-03
Comments:
See mounting and operating instructions for residual hazards.
Also observe the referenced documents listed in the mounting and operating instructions.
Persons authorized to compile the technical file:
SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 27 April 2022

Stephan Giesen
Director
Product Management

Peter Scheermesser
Director
Product Maintenance & Engineered Products

Revision 00
Classification: Public · SAMSON AKTIENGESELLSCHAFT · Weismuellerstrasse 3 · 60314 Frankfurt am Main, Germany

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19

Markings on the device

8 Markings on the device

8.2 Valve nameplate

The nameplate shown was up to date at thetime of publication of this document. The
nameplate on the device may differ from theone shown.

See associated valve documentation.

8.3 Location of the nameplate
Location of thenameplate

8.1 Nameplate of Type 2212
Safety Thermostat
1

3

2

4

5

14
6

7

Fig. 5:

8

10 11

9

13

12

Fig. 7:

Nameplate of Type 2212 Safety
Thermostat
13

2

4 4a 514
6

7

Fig. 6:

8

9

9a

10 11

12

13

Nameplate of Type 2212 Safety
Thermostat with Type 2401 PL/SPL

1

Type

8

TÜV or DIN number

2

Material number/configuration ID

9Limit range in °C

3

Serial number

4

Limit in °C

4a Limit value in bar
5

DIN tested

6

ID of the certification
body

7

–

20

Location of the nameplate

8.4 Material identification
numberSpecifying the material number, you cancontact SAMSON to find out which material
is used. For more details on the nameplate,see Chapter 8.1.

9a Limit range in bar
10 Country of origin
11 UKCA, if applicable
12 Year of manufacture
13 Month of manufacture
14 CE marking

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Technical data

9 Technical data
Table 3: Technical data
Type 2212 Safety Thermostat for STL
Adjustable limit range

Size 50 1)

Size 150 1)

10 to 95 °C · 20 to 120 °C · 40 to 170 °C

Max. perm. ambient temperature+80 °C

Min. permissible sensor temperature 2) at
0 °C ambient temperature

Smallest adjustable temperature limit of the selected limit
range

Min. permissible temperature of the STL
including sensor when the plant is shut
down 2) with
Limit range 10 to 95 °C
Limit range 20 to 120 °C
Limit range 40 to 170 °C–10 °C
0 °C
10 °C

Max. permissible temperature at sensor

20 K above the adjusted set point

Capillary tube length

5 m (10 m as special version) 3)

Pressure rating with G ½ thermowell

PN 40

Electric signal transmitterMax. load at 120/230 V (AC)10 A with resistive load

Class of protection
Conformity

IP 67
·

1)

Size 50: Type 2212 for valve DN 15 to 50 | Size 150: Type 2212 for valve DN 65 to 150

2)

The STL is locked when the temperature falls below the specified temperature.

3)

Not tested according to DIN EN

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Dimensions

10 Dimensions
L

L

H1

H1
20

G1
H

G½

G1

170

H

G1

Typ 2212

G1
188

Ø12
188

L
H2

H1
G1
H
Typ 2212

G1
188

Fig. 8:22

Dimension diagrams of Type 2111, Type 2422 and Type 2119

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Table 4: Dimensions in mm and weights in kg
Nominal size DN

15

Valve

Without
With

25

130
Extension

Weight (PN 16body) 2), approx. kg

5

150

32

40

50

15

Type 2111/(Type 2422)

Type 2422

Length L
H1

20

160

180

200

20

25

230

130

150

160

225 /152 /(225)

225 /82365

365 3)/– 4)/(365)365 3)/– 4)

5.5

6.5

13

4)

13.5

16

Valve

80

Type 2111

225

3)

65

3)

4

4.5

4)

5.5

100

125

150

Type 2422 1)
290

310

350

400

480

300

355

460

590

440

495

600

730

40

70

113

27

32

Type 2119

Length L

130

150

160

180

200

230

–

290

310

350

400

480

H2

70

80

85

100

105

120

–

130

140

150

200

210

H1

Without
With

Extension

Weight (PN 16body) 2), approx.
kg
Overallheight H

235

88/245

–

320

355

395

500

375

– /385

–

460

495

535

640

12.5/ 14.5/ 17/
15
17
19

–

71

On request

6

7

8.5

STL

H = H1 + 255

TR/STLH = H1 + 545

3250Type 2212 Safety Thermostat
WeightApprox. 3.5 kg

1)

Details on STL and TR/STL with Type 2422 Valve in DN 200 and 250 available on request.

2)+15 % for PN 25/40

3)Type 2111, valve material 1.0619 and stainless steel

4)Type 2111, valve material EN-GJS-400-18-LT and EN-JL-1040

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24

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EB 2046 EN

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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

2024-08-20 · English

EB 2046 EN