Samson 43-6 Service manual

Translation of original instructions
EB 2172 EN
Type43-6 Temperature Regulator
Self-operated Regulators
Edition December 2020

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 in
these instructions are for illustration purposes only. The actual product may vary.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
([e-mail]).
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 > Service & Support > Downloads >
Documentation.
Definition of signal words
Hazardous situations which, if not avoided,
will result in death or serious injury
Hazardous situations which, if not avoided,
could result in death or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
!
WARNING
!
NOTICE
!
Note
Tip
EB 2172 EN

Contents
EB 2172 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-5
1.2 Notes on possible personal injury ................................................................1-5
2 Markings on the device ..............................................................................2-1
2.1 Valve nameplate .........................................................................................2-1
2.2 Nameplate of control thermostat ..................................................................2-2
2.3 Location of the nameplate on valve and control thermostat .............................2-2
2.4 Materialidenticationnumber .....................................................................2-3
3 Design and principle of operation ...............................................................3-1
3.1 Additionalttings........................................................................................3-3
3.2 Technical data ............................................................................................3-4
4 Shipment and on-site transport ...................................................................4-1
4.1 Accepting the delivered goods .....................................................................4-1
4.2 Removing the packaging from the regulator ..................................................4-1
4.3 Transporting and lifting the regulator............................................................4-1
4.4 Storing the regulator ...................................................................................4-2
5 Installation.................................................................................................5-1
5.1 Installation conditions..................................................................................5-1
5.2 Preparation for installation...........................................................................5-3
5.3 Mounting ...................................................................................................5-5
5.3.1 Installing the regulator.................................................................................5-6
5.3.2 Cleaning the pipeline ..................................................................................5-6
5.4 Testing the regulator ....................................................................................5-6
5.4.1 Leak test.....................................................................................................5-7
5.4.2 Pressure test................................................................................................5-7
5.5 Insulation ...................................................................................................5-8
6 Start-up .....................................................................................................6-1
6.1 Start-up and putting the regulator back into operation ...................................6-2
6.1.1 Starting up the plant when gases and liquids are controlled............................6-2
6.1.2 Starting up the plant when vapors are controlled...........................................6-2
7 Operation..................................................................................................7-1
7.1 Adjusting the temperature set point...............................................................7-1
8 Malfunctions ..............................................................................................8-1
8.1 Troubleshooting ..........................................................................................8-1
8.2 Emergency action .......................................................................................8-3

Contents
EB 2172 EN
9 Servicing....................................................................................................9-1
9.1 Preparing the valve for service work.............................................................9-4
9.2 Installing the regulator after service work ......................................................9-4
9.3 Service work...............................................................................................9-4
9.4 Cleaning and exchanging the seat and plug .................................................9-4
9.5 Ordering spare parts and operating supplies ................................................9-6
10 Decommissioning .....................................................................................10-1
11 Removal ..................................................................................................11-1
11.1 Removing the control thermostat.................................................................11-1
11.2 Removing the valve from the pipeline..........................................................11-1
12 Repairs ....................................................................................................12-1
12.1 Returning devices to SAMSON ..................................................................12-1
13 Disposal...................................................................................................13-1
14 Certicates...............................................................................................14-1
15 Annex......................................................................................................15-1
15.1 Tightening torques.....................................................................................15-1
15.2 Tools ........................................................................................................15-1
15.3 Lubricant..................................................................................................15-1
15.4 Spare parts ..............................................................................................15-2
15.5 After-sales service.....................................................................................15-3

EB 2172 EN 1-1
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 oper-
ating 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 the
Type43-6Regulator.
Theregulatorisdesignedtooperateunderexactlydenedconditions(e.g.operating
pressure, process medium, temperature). Therefore, operators must ensure that the regulator
isonlyusedinoperatingconditionsthatmeetthespecicationsusedforsizingtheregulator
at the ordering stage. In case operators intend to use the regulator in other applications or
conditionsthanspecied,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.
ÎRefertothetechnicaldataandnameplateforlimitsandeldsofapplicationaswellas
possible uses.
Reasonably foreseeable misuse
The regulator is not suitable for the following applications:
−Useoutsidethelimitsdenedduringsizingandbythetechnicaldata
−Useoutsidethelimitsdenedbytheadditionalttings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re-
lieved of pressure, the regulator is closed by the force of the internal valve springs.

1-2 EB 2172 EN
Safety instructions and measures
Qualications of operating personnel
The regulator must be mounted, started up, serviced and repaired by fully trained and quali-
edpersonnelonly;theacceptedindustrycodesandpracticesmustbeobserved.According
to these mounting and operating instructions, trained personnel refers to individuals who are
abletojudgetheworktheyareassignedtoandrecognizepossiblehazardsduetotheirspe-
cializedtraining,theirknowledgeandexperienceaswellastheirknowledgeoftheapplica-
ble standards.
Personal protective equipment
Werecommend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:
ÎProtectiveclothing,safetyglovesandeyeprotectioninapplicationswithhot,coldand/or
corrosive media
ÎWearhearingprotectionwhenworkingnearthevalve.Followtheinstructionsgivenby
the plant operator.
ÎCheck with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions,conversionsorothermodications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.Fur-
thermore, 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operating
pressure or by moving parts by taking appropriate precautions. Plant operators and operat-
ingpersonnelmustobserveallhazardstatements,warningandcautionnotesinthese
mounting and operating instructions.
Hazardsresultingfromthespecialworkingconditionsattheinstallationsiteoftheregulator
mustbeidentiedinariskassessmentandpreventedthroughthecorrespondingsafetyin-
structions drawn up by the operator.
Wealsorecommendcheckingthehazardsposedbytheprocessmediumbeingused(e.g.
uGESTIS(CLP)hazardoussubstancesdatabase).
ÎObservesafetymeasuresforhandlingthedeviceaswellasrepreventionandexplosion
protection measures.

EB 2172 EN 1-3
Safety instructions and measures
These mounting and operating instructions cover the standard version of the devices and the
standard 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 not
covered 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 the
referenced 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dened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 and
temperatures) 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 as
wellasthereferenceddocumentsandobservethespeciedhazardstatements,warnings
and caution notes. Furthermore, operating personnel must be familiar with the applicable
health, 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. This EU declaration
ofconformityisincludedinthe'Certicates'section.
AccordingtotheignitionriskassessmentperformedinaccordancewithEN13463-1:2009,
section 5.2, 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.
ÎForconnectiontotheequipotentialbondingsystem,observetherequirementsspeciedin
section6.4ofEN60079-14(VDE0165-1).

1-4 EB 2172 EN
Safety instructions and measures
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
−Mounting and operating instructions for
e.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 Strainer uEB1010
e.g. Type2NI Strainer uEB1015
−Data sheets for
e.g. Accessories: Double adapter·Manual adjuster·Intermediate insu-
lating piece uT2176
e.g. Typetested safety devices uT2181
e.g. Type 2403 Safety Temperature Monitor (STM) uT2183
e.g. Type 2439 Safety Temperature Limiter (STL) uT2185
e.g. Type1NI Strainer uT1010
e.g. Type2NI Strainer uT1015
−Mountingandoperatinginstructionsaswellasdatasheetsforadditionalttings
(e.g. shut-off valves, pressure gauges etc.).

EB 2172 EN 1-5
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 of the regulator can lead to regulator components bursting.
ÎObserve the maximum permissible pressure for regulator and plant.
ÎBeforestartinganyworkontheregulator,depressurizeallplantsectionsaffected
as well as the regulator.
ÎDrain the process medium from all the plant sections affected as well as the regula-
tor.
1.2 Notes on possible personal injury
WARNING
!
Damage to health relating to the REACH regulation.
If a SAMSON device contains a substance which is listed as being a substance of very
high concern on the candidate list of the REACH regulation, this circumstance is indi-
cated on the SAMSON delivery note.
ÎInformation on safe use of the part affected. uwww.samsongroup.com/reach-en.
html
Risk of personal injury through 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unno-
ticed and the necessary instructions not followed. There is a risk of personal injury.
ÎKeep all relevant markings and inscriptions on the device in a constantly legible
state.
ÎImmediately renew damaged, missing or incorrect nameplates or labels.

1-6 EB 2172 EN
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.
ÎAllow components and pipelines to cool down or warm up to the ambient tempera-
ture.
ÎWear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.
ÎWearhearingprotectionwhenworkingnearthevalve.Followtheinstructionsgiv-
en 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.
ÎIf possible, drain the process medium from all the plant sections affected and the
regulator.
ÎWearprotectiveclothing,safetyglovesandeyeprotection.
1.3 Notes on possible property damage
NOTICE
!
Risk of regulator damage due to incorrectly attached slings.
ÎDo not attach load-bearing slings to the regulator.

EB 2172 EN 1-7
Safety instructions and measures
1.3 Notes on possible property damage
NOTICE
!
Risk of regulator damage due to unsuitable medium properties.
Theregulatorisdesignedforaprocessmediumwithdenedproperties.
ÎOnlyusetheprocessmediumspeciedforsizing.
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.
ÎFlush 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.
ÎOnly use lubricants approved by SAMSON.
Whenindoubt,consultSAMSON.
Risk of leakage and regulator damage due to excessively high or low tightening
torques.
Observethespeciedtorqueswhentighteningregulatorcomponents.Excessivetight-
ening torques lead to parts wearing out more quickly. Parts that are too loose may
cause leakage.
ÎObservethespeciedtighteningtorques(see'Tighteningtorques'inAnnex).
Risk of excess pressure damaging plant sections due to construction-related seat
leakage through the regulator.
ÎAlways install a safety device (e.g. safety excess pressure valve or safety relief
valve) in the plant.
Risk of regulator damage due to the use of unsuitable tools.
Certain tools are required to work on the regulator.
ÎOnly use tools approved by SAMSON.
Whenindoubt,consultSAMSON.

1-8 EB 2172 EN
Safety instructions and measures
1.3 Notes on possible property damage
NOTICE
!
Risk of the process medium being contaminated through the use of unsuitable lubri-
cants and/or contaminated tools and components.
ÎKeep the regulator and the tools used free from solvents and grease.
ÎMake 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,depending
on the air humidity. This may affect, in particular, the functioning of the plug or control
thermostat stem guide.
ÎPrevent 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' section.
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 thermo-
stat, 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 no
longerbeabletofulllitscontroltask.
ÎDo not dismantle the regulator.
ÎOnly perform allowed activities on the regulator.
ÎContact SAMSON's After-sales Service before replacing spare parts.
SAMSON's After-sales Service can support you concerning lubricant, tightening torques
and tools approved by SAMSON.
Note

EB 2172 EN 2-1
Markings on the device
2 Markings on the device
2.1 Valve nameplate
Nameplate on bodies made of red brass or spheroidal graphite iron
1 Type designation
2 Model number
3 Material number and device index
4 Order number or year of manufacture
5 KVS/CV
6Perm.temperaturein°C/°F
7Perm.temperaturein°C/°F
SAMSON 1
234
5 6
7
Valvesize,pressureratingandthearrowindicatingthedirectionofowarecastintothebody.
Nameplate on stainless steel body
1 Type designation
2 Model number
3 Material number and device index
4 Order number or year of manufacture
5Flowcoefcient:
DIN: KVS · ANSI: CV· JIS: CV
6Perm. temperature:
DIN:°C·ANSI:°F·JIS:°C/°F
7Max.perm.differentialpressureΔp:
DIN:bar·ANSI:psi·JIS:bar/psi
8Threadsize/valvesize:
DIN:DN·ANSI:NPS·JIS:DN…A/B
9Pressure rating:
DIN:PN·ANSI:CL·JIS:K
10 Arrowindicatingthedirectionofow
10
SAMSON 1
234
586
9 7
Fig.2-1: Valve nameplate

2-2 EB 2172 EN
Markings on the device
2.2 Nameplate of control thermostat
2004
0062
23
5
6
4
1
1 Model number
2 Type designation
3 Material number
4 CE marking
5Temperaturerangein°Cand°F
6Register number (type test according to
DINEN14597)
Fig.2-2: Nameplate of the control thermostat
2.3 Location of the nameplate on valve and control thermostat
Red brass body Stainless steel body Spheroidal graphite iron body
Location of the
nameplate
Location of the
nameplate
Top view
Type2430
Fig.2-3: Locations of the nameplates on the body

EB 2172 EN 2-3
Markings on the device
2.4 Material identication
number
The material is indicated on the body.
Specifying the material number, you can
contactustondoutmoredetails.The
materialnumberisspeciedonthe
nameplate (‘Material number and device
index’/3).
For more details on the nameplate, see sec-
tion2.2andsection2.1.

2-4 EB 2172 EN
Markings on the device

EB 2172 EN 3-1
Design and principle of operation
3 Design and principle of oper-
ation
ÎSee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 and
temperature sensor.
A temperature sensor operating according to
the adsorption principle is used as standard.
Details on the Type2430 Control Thermostat
with a temperature sensor operating
according to the vapor pressure principle
can be found 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at-
tached to the valve body (3) using the cou-
pling nut (40).
The temperature regulators work according
to the adsorption principle. The temperature
of 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
the operating 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),the
point of response is changed over the valve
spring (22). As a result, the temperature set
point is changed.
Note
The regulator is suited for plants to be
cooled.
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 a
safetytemperaturelimiter(TR/STL)orasafe-
tytemperaturemonitor(TR/STM).
Details in mounting and operating instruc-
tions
uEB2185(STL);uEB2083(STM).
Version with double adapter
The temperature regulator can be equipped
with a double adapter to connect an addi-
tional 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 di-
rectly to the valve or at the double adapter
instead of a control thermostat.
See Data Sheet uT2176.
The Type43-6 Regulator is not a safety
valve. If necessary, a suitable overpressure
protection must be installed on site in the
plant section.
Note

3-2 EB 2172 EN
Design and principle of operation
35
38
40
41
42
43
44
45
46
47
1.2
31.1
1
5
7
22
53
52
51
50
48
28
Type2430ControlThermostat
Type 2436 Valve
1 Plug assembly
1.1 Balancingbellows
1.2 Plug stem
3Body
5 Seat
7 Seal
22 Valve spring
28 Seal
35 Stopper
38 Guidenipple
40 Coupling nut
41 Lead-seal hole
42 Set point spring
43 Set point adjuster
44 Operating bellows
45 Pin of operating
element
46 Operating element
47 Capillary tube
48 Temperature sensor
50
Thermowell (optional)
51 Packing
52 Gasket
53 Screw
Fig.3-1: Functional diagram of regulator, DN15 to 25·G½ to 1

EB 2172 EN 3-3
Design and principle of operation
3.1 Additional ttings
ÎSeeFig.3-2
Strainers
WerecommendinstallingaSAMSON
strainer (2) upstream of the valve. It prevents
solid particles in the process medium from
damaging the regulator.
ÎDo not use the strainer to permanently
ltertheprocessmedium.
ÎSelectastrainer(meshsize)suitablefor
the process medium.
Any impurities carried along by the process
medium may impair the proper functioning
of the regulator. We recommend installing a
strainer (e.g. SAMSON Type1NI) upstream
of the temperature regulator (uEB1010).
Note
Thermometer
Install a thermometer (4) downstream of the
regulator to monitor the temperature prevail-
ing in the plant.
Bypass and shut-off valves
Werecommendinstallingashut-offvalve(1
and 6) both upstream of the strainer and
downstream of the regulator and installing a
bypass line. The bypass ensures that the
plant does not need to be shut down for ser-
vice and repair work on the regulator.
Insulation
Regulators can be insulated to reduce heat
energy transfer.
Refer to the instructions in the 'Installation'
section.
1623
54
1Shut-off valve
2Strainer
3Temperature regulator
4Thermometer
5Temperature sensor
6Shut-off valve
Fig.3-2: Installation example · Type43-6 in a cooler

3-4 EB 2172 EN
Design and principle of operation
3.2 Technical data
The regulator nameplate provides informa-
tion on the regulator version (see the 'Mark-
ings on the device' section).
More information is available in Data Sheets
u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de-
signed to maintain the temperature at the
control 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
−Valve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 temperature
rises.
Note
Conformity
TheType43-6RegulatorbearsboththeCE
and EAC marks of conformity.
Testing according to DINEN
The Type43-6 Temperature
Regulator is tested by the German
Technical Inspectorate (TÜV)
according to DINEN14597 under
the type designation 2750-0. The
registration number is available on
request.
Noise emissions
SAMSON is unable to make general state-
ments about noise emissions. The noise emis-
sions depend on the regulator version, plant
facilities, process medium and operating
conditions.
Leakage class
The metal-seated regulator has the leakage
classIaccordingtoIEC60534-4.
The soft-seated regulator has the leakage
classIVaccordingtoIEC60534-4.
Temperature range
DependingonhowtheType43-6Regulator
iscongured,itcanbeuseduptomax.
150°C/300°F.Theminimumtemperatureis
limited by the seal material used in the regu-
lator(seeTable3-1).