Samson Series 43 Service manual

Mounting and

Operating Instructions

EB 2172 EN

Edition January 2015

Type43-5

Type43-7 with anged valve

body, DN32 to 50

Type43-6

Type43-7 with welding ends

Series43 Temperature Regulators

Type43-5 and Type43-7

Type43-6

Definition of signal words

DANGER!

Hazardous situations which, if not

avoided, will result in death or seri-

ous injury

WARNING!

Hazardous situations which, if not

avoided, could result in death or seri-

ous injury

NOTICE

Property damage message or mal-

function

Note:

Additional information

Tip:

Recommended action



2 EB 2172 EN

Contents

EB 2172 EN 3

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

2 Process medium and scope of application.......................................................5

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

3 Design and principle of operation ..................................................................6

3.1 Version with safety thermostat .........................................................................6

3.2 Version with double adapter ...........................................................................6

4 Installation....................................................................................................8

4.1 Temperature sensor ........................................................................................8

4.1.1 Capillary tube ...............................................................................................9

4.2 Strainer (lter)................................................................................................9

4.3 Additional components .................................................................................10

5 Operation...................................................................................................10

5.1 Start-up .......................................................................................................10

5.2 Adjusting the set point ..................................................................................10

6 Maintenance – Replacing parts ....................................................................12

6.1 Cleaning or replacing the plug ......................................................................12

7 Customer inquiries ......................................................................................13

8 Dimensions .................................................................................................16

8.1 Dimension tables..........................................................................................17

9 Technical data.............................................................................................18

Contents Page

4 EB 2172 EN

General safety instructions

1 General safety instructions

–The device must be mounted, started up or serviced by fully trained and

qualied personnel only; the accepted industry codes and practices are to

be observed. Make sure employees or third persons 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 mainte-

nance, 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 to

and recognize possible dangers due to their specialized training, their

knowledge and experience as well as their knowledge of the applicable

standards.

–The devices comply with the requirements of the European Pressure Equip-

ment Directive 2014/68/EU. Devices with a CE marking have a declaration

of conformity, which includes information about the applied conformity as-

sessment procedure. This declaration of conformity can be provided on re-

quest.

–To ensure appropriate use, only use the device in applications where the op-

erating pressure and temperatures do not exceed the specications used for

sizing the device at the ordering stage.

–The manufacturer does not assume any responsibility for damage caused by

external forces or any other external factors.

–Any hazards that could be caused in the temperature regulator by the pro-

cess medium, operating pressure or by moving parts are to be prevented by

taking appropriate precautions.

–Proper transport, storage, installation, operation and maintenance are as-

sumed.

Testing according to DINEN

The Type43-5, Type43-6 and Type43-7 Temperature Regulators are

tested by the German Technical Inspectorate (TÜV) according to

DINEN14597. The register number is available on request.

EB 2172 EN 5

Process medium and scope of application

2 Process medium and scope of application

Temperature control in heat generators or heat exchangers by closing and opening a valve

(Series43).

For set points from 0 to 150°C · Valves G½ to 1 and DN15 to 150 · PN25 · Max. 200°C

Liquids and steam up to 200°C and non-ammable gases up to 80°C · For plants to be

heated or cooled.

2.1 Transportation and storage

The devices must be carefully handled, transported and stored. Protect the devices against

adverse inuences, such as dirt, moisture or temperature outside the maximum ambient tem-

perature range from –20 to +80°C.

6 EB 2172 EN

Design and principle of operation

3 Design and principle of oper-

ation

See Fig.1.

The regulators consist of a Type2436K

Globe Valve (Type43-6), Type2435K

Globe Valve (Type43-5) or Type2437K

(Type43-7) and a Type2430K Control

Thermostat with set point adjuster, capillary

tube and a temperature sensor working ac-

cording to the adsorption principle.

Note:

Details on the Type2430K Thermo-

stat with a temperature sensor work-

ing according to the vapor pressure

principle uEB2430-3.

The bodies are available made of red brass,

spheroidal graphite iron or stainless steel.

See Data Sheet uT2176 for versions with

double adapter or manual adjuster for the

attachment of additional control thermostats

The Type2430K Thermostat is attached to

the valve body using the coupling nut.

The temperature regulators work according

to the adsorption principle. The temperature

of the measured medium creates a pressure

in the temperature sensor which is propor-

tional to the measured temperature. This

pressure is transferred through the capillary

tube (10) to the operating element (13) and

converted into a positioning force. This force

causes the pin of the operating element (12)

to move the plug stem (4) with the valve

plug. By turning the set point adjuster (8),

the point of response is changed over the

valve spring (5).

The valves are balanced by a balancing bel-

lows (3.1). The balancing bellows counter-

balances any changes in pressure upstream

of the valve since the upstream pressure also

acts on the inside of the bellows through a

hole in the valve plug (3).

The Type43-5 and Type43-7 Regulators are

suitable for plants to be heated. The valves

close when the temperature rises.

The Type43-6 Regulator has a valve which

opens as the temperature rises. This regula-

tor is therefore suitable for plants to be

cooled.

3.1 Version with safety ther-

mostat

When a Type2439K/2403K Safety Ther-

mostat is attached to the valve or the regula-

tor, this combination functions as a safety

temperature limiter (STL) or a temperature

regulator with safety temperature limiter (TR/

STL).

Details in mounting and operating instruc-

tions uEB2185.

3.2 Version with double

adapter

The temperature regulator can be equipped

with a double adapter to connect an addi-

tional thermostat to control a further control

variable.

Details in mounting and operating instruc-

tions uEB2176.



EB 2172 EN 7

Design and principle of operation

Fig.1: Functional diagram

Type43-6

Type2436K Valve

Type43-5

Type2435K Valve (female thread)

Type43-7

Type2437K Valve

1.1 1

1.3

4.1

3.1

1.2

3.1

1 Valve body

1.1 Connection nut with seal

and welding end

1.2 Stopper

1.3 Insulating pipe

2 Seat

3 Plug

3.1 Balancing bellows

4 Plug stem

4.1 Pin

5 Valve spring

6 Guide nipple

7 Set point spring

8Set point adjuster

9Operating bellows

10 Capillary tube

12 Pin of operating element

13 Operating element

14 Lead-seal hole

15 Coupling nut

The valve closes when the temperature rises

Type 2430K

Control Thermostat

The valve opens when the temperature rises

Tightening torque:

20Nm

8 EB 2172 EN

Installation

4 Installation

Choose a place of installation that allows

you to freely access the regulator even after

the entire plant has been completed. Make

sure that the permissible ambient tempera-

ture does not fall below –20°C or exceed

+80°C.

Flush the pipeline thoroughly before install-

ing the regulator to ensure that any sealing

parts, weld spatter and other impurities car-

ried along by the process medium do not im-

pair the proper functioning of the valve,

above all the tight shut-off.

Note:

Type43-5/Type43-7: If the valve is

to be insulated, two thirds of the insu-

lating pipe (1.3) must remain uninsu-

lated.

–Install the valve free of stress and with the

least amount of vibrations as possible.

–The ow of direction must correspond

with the direction indicated by the arrow

on the valve body.

–The control thermostat must be suspend-

ed to hang downward. Other mounting

positions are possible for Type43-6 up

to 110°C.

NOTICE

Malfunction and damage due to ad-

verse effects of weather conditions

(temperature, humidity).

Do not install the temperature regula-

tor outdoors or in rooms prone to

frost. If such a location cannot be

avoided, protect the regulator

against freezing up if the process

medium owing through the valve

can freeze up. Either heat the regula-

tor or remove it from the plant and

completely drain the residual medi-

um.

4.1 Temperature sensor

NOTICE

Galvanic corrosion due to incorrectly

selected materials of the mounting

parts.

On installing the sensor or thermow-

ell, only combine the same kind of

materials (e.g. stainless steel with

stainless steel or copper together with

other copper materials).

The temperature sensor may be installed in

any position even when a thermowell is

used. However, make sure its entire length is

immersed in the process medium to be con-

trolled. It must be installed in a location

where overheating or considerable idling

times cannot occur.

Note:

If the sensor is to be used with a ther-

mowell, only use original SAMSON

thermowells.

Weld a welding socket with G½ or G¾ fe-

male thread (to match the screw gland) at

the place of installation.

ÎSeal the screw gland of the sensor.



EB 2172 EN 9

Installation

Installation with thermowell

When a thermowell is used, a welding sock-

et with G1 female thread must be used.

ÎSeal the thermowell into the welding

socket. Insert the sensor and tighten it

with the clamping screw.

Note:

For temperature regulators with safe-

ty temperature limiter (TR/STL), install

the sensor of the limiter near the sen-

sor of the regulator.

4.1.1 Capillary tube

Carefully run the capillary tube without

bending or twisting it. Avoid locations with

considerable ambient temperature uctua-

tions along the entire length of the tube.

Note:

Do not damage or shorten the capil-

lary tube. Roll up any capillary tube

that is not used. The smallest permis-

sible bending radius is 50mm.

4.2 Strainer (lter)

Install the strainer upstream of the tempera-

ture regulator.

–The ow of direction must correspond

with the direction indicated by the arrow

on the body.

–The lter element must be installed to

hang downwards.

Tip:

Remember to leave enough space to

remove the lter element for clean-

ing.



Fig.2: Typical installations

Type43-5/43-7 in a steam-heated boiler

Type43-6 in a cooler

1 Shut-off valve

2 Strainer

3 Temperature regulator

4 Thermometer

5 Temperature sensor

1123

12354

10 EB 2172 EN

Operation

4.3 Additional components

We recommend installing a hand-operated

shut-off valve upstream of the strainer and

downstream of the regulator to be able to

shut down the plant for cleaning and mainte-

nance, and when the plant is not used for

longer periods of time.

To check the adjusted set point, we recom-

mend installing a thermometer immersed in

the medium to be controlled near the sensor.

5 Operation

See Fig.1.

5.1 Start-up

ÎPut the temperature regulator into opera-

tion after mounting the valve and control

thermostat.

ÎFill the plant slowly with the process me-

dium (without pressure surges).

Slowly open the hand-operated shut-off

valve downstream of the valve and then

the shut-off valve upstream of the valve.

ÎCheck the adjusted temperature set point

at the thermometer installed near the

temperature sensor.

5.2 Adjusting the set point

To adjust the set point, turn the black plastic

adjuster while watching the reference ther-

mometer.

–Turn clockwise () to reduce the tem-

perature.

–Turn counterclockwise () to increase the

temperature.

The adjustment diagrams (see Fig.3) can be

used as a guide to nd the rst approximate

value.

Tip:

Higher set point temperatures can be

adjusted in increments as required.

However, to lower the set point tem-

perature, proceed in steps of 10 to

20°C. When doing so, wait for the

process medium to cool down before

continuing. Watch the thermometer.

Table1: Set point ranges

Set point

range in °C

Set point change

per turn

Sensor Ø

0 to 35°C 2.5°C 9.5mm

2°C 16mm

25 to 70°C 3°C 9.5mm

2°C 16mm

40 to 100°C 4°C 9.5mm

3°C 16mm

50 to 120°C 4°C 9.5mm

4.5°C 16mm

70 to 150°C 4.5°C 9.5mm

5°C 16mm

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