Samson series 43 Service manual

Mounting and
Operating Instructions
EB 2173 EN
Edition June 2016
Type43-3 Temperature Regulator with Type2430K Control Thermostat
Series43 Temperature Regulators
Type43-3

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 2173 EN
Note:
Non-electric valve versions whose bodies are not lined with an insulating material
coating do not have their own potential ignition source according to the risk assess-
ment stipulated in EN13463-1:2009, section5.2, even in the rare incident of an
operating fault. Therefore, such valve versions do not fall within the scope of Directive
2014/34/EU.
For connection to the equipotential bonding system, observe the requirements speci-
ed in section 6.4 of EN60079-14: 2011 (VDE0165 Part 1).


Contents
EB 2173 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 ..................................................................5
3.1 Version with safety thermostat .........................................................................6
4 Installation....................................................................................................8
4.1 Installing the valve ..........................................................................................8
4.2 Temperature sensor ........................................................................................8
4.2.1 Capillary tube ...............................................................................................9
4.3 Strainer (lter)................................................................................................9
4.4 Additional components ...................................................................................9
5 Operation...................................................................................................11
5.1 Start-up .......................................................................................................11
5.2 Adjusting the set point ..................................................................................11
6 Maintenance ...............................................................................................13
7 Customer inquiries ......................................................................................13
8 Nameplate..................................................................................................14
9 Technical data.............................................................................................15
10 Dimensions .................................................................................................16
10.1 Dimension tables..........................................................................................17

4 EB 2173 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 97/23/EC. The declaration of conformity issued for a regula-
tor bearing the CE marking includes information on the applied conformity
assessment 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.

EB 2173 EN 5
Process medium and scope of application
2 Process medium and scope of application
Temperature regulators for mixing and diverting 1) service in heating or cooling installations
Temperature set points from 0 to 150°C · Valves G½ to G1 female thread · DN15 to 50
with welding ends, threaded ends, or anges · Nominal pressure PN25 · Suitable for liquids
up to 150°C
__
1) Diverting service only with male thread to attach welding ends, threaded ends, or anges
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 permissible ambient
temperature range from –20 to +80°C.
3 Design and principle of operation
See Fig.1.
The regulators consists of an unbalanced Type2433K Three-way Valve with the
Type2430K Thermostat attached to it.
The valve consists of the valve body designed either as a mixing or diverting valve and the
plug with plug stem.
The thermostat consists of the operating bellows, set point spring, capillary tube, and tem-
perature sensor.
Note:
Details on the Type2430K Thermostat with a temperature sensor working according
to the vapor pressure principle uEB2430-3.


6 EB 2173 EN
Design and principle of operation
The regulators consist of a three-way valve
made of red brass and a control thermostat
with set point adjuster, capillary tube, and
temperature sensor.
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 controlled medium
creates a pressure in the sensor which is pro-
portional to the measured temperature. This
pressure is transferred through the capillary
tube (11) to the operating element (12) and
converted into a positioning force.
This force acts on the operating bellows (9)
and the pin of the operating element (10)
which moves the plug stem and plug (3). By
turning the set point adjuster (8), the point of
response is changed over the spring (7). As
a result, the valve plug moves through its
travel range within a higher or lower tem-
perature range measured by the sensor.
Depending on its plug arrangement, the
three-way valve is either used for mixing or
diverting service.
In mixing valves, the process media to be
mixed enter at valve ports A and B. The
combined ow exits the valve at port AB.
When the temperature rises, port A opens
and port B closes.
In diverting valves, in contrast, the process
medium enters at the valve port AB and the
partial ows exit at ports A and B. When the
temperature rises, port A closes and port B
opens.
3.1 Version with safety ther-
mostat
When a Type2403K Safety Thermostat is
attached to the valve or the regulator, this
combination functions as a safety tempera-
ture monitor (STM) or a temperature regula-
tor with safety temperature monitor (TR/
STM).
Details in Data Sheet uT2183 and Mount-
ing and Operating Instructions uEB2183.
When a Type2439K Safety Thermostat is
attached, this version functions as a safety
temperature limiter (STL). Details in Data
Sheet uT2185 and Mounting and Operat-
ing Instructions uEB2185.
Tested safety equipment (according to DIN
EN)
Note:
A SAMSON thermowell must be
used when a sensor in versions tested
according to DIN EN is used with a
thermowell.


EB 2173 EN 7
Design and principle of operation
Fig.1: Sectional drawings
A AB
1
3
2
4
5
11
7
8
9
10
12
A AB
(20Nm)
Diverting valveMixing valve
Type43-3
PlugarrangementDN32to50
Mixing valve Diverting valve
1 Valve body
2 Seat
3 Plug
4 Plug stem
5Coupling nut
7 Set point spring
8Set point adjuster
9Operating bellows
10 Pin of operating element
11 Capillary tube
12 Operating element
To Type2430K
Control Thermostat

8 EB 2173 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 tem-
perature does not fall below –20°C or ex-
ceed +80°C.
4.1 Installing the valve
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.
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.
–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 temperatures
up to 110°C.
–Make sure that the inlet and outlet ows
of the plant are correctly assigned to
ports A, B and AB according to Fig.2.
4.2 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 2173 EN 9
Installation
Installation with thermowell
When a thermowell is used, a welding sock-
et with G½ or G¾ female thread (to t the
thermowell) 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.
4.2.1 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.
4.3 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 downward.
Tip:
Remember to leave enough space to
remove the lter element for clean-
ing.
4.4 Additional components
We recommend installing a hand-operated
shut-off valve upstream of the strainer and
downstream of the regulator in each pipe to
be able to shut down the plant for cleaning
and maintenance, 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.



10 EB 2173 EN
Installation
Heating
Cooling
Fig.2: Arrangement of Type43-3 Temperature Regulator
B
AAB
B
AAB
AAB
B
B
AAB
B
AAB
B
AAB
AAB
B
B
AAB
Mixing valve
in the ow pipe
Mixing valve
in the ow pipe
in the return
ow pipe
in the return
ow pipe
Diverting valve
in the ow pipe
Diverting valve
in the ow pipe
in the return
ow pipe
in the return
ow pipe
Flow pipe
Return ow pipe
Flow pipe
Return ow pipe
Flow pipe
Return ow pipe
Flow pipe
Return ow pipe
Flow pipe
Return ow pipe
Flow pipe
Return ow pipe
Flow pipe
Return ow pipe
Flow pipe
Return ow pipe

EB 2173 EN 11
Operation
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 (8) while watching the temperature
at the reference thermometer.
–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

12 EB 2173 EN
Operation
Fig.3: Adjustment diagrams
DynamicbehaviorofType2430KControlThermostat
The dynamics of the regulator are mainly determined by the response of the sensor with its
characteristic time constant.
The table shows the dynamic behavior of the Type2430K Thermostat measured in water.
Table2: Dynamic behavior of Type2430K Thermostat
Type2430K Sensor Ø Time constant [s]
Without With
Thermowell
Adsorption principle
9.5mm 15s 40s
16mm 30s 80s
Air sensor 8s –1)
1) Thermowell not possible
0
20
40
60
80
100
120
140
150
0123 4
70...150
50...120
40...100
25...70
0...35
°C
0
20
40
60
80
100
120
140
150
0123 4
°C
70...150
50...120
40...100
25...70
0...35
Scale marking on the thermostat head
Set point rangesSet point ranges
DN15to25 DN32to50
Type43-3

EB 2173 EN 13
Maintenance
6 Maintenance
The temperature regulators do not require
any maintenance. Nevertheless, they are
subject to natural wear, particularly at the
seat and plug.
Depending on the operating conditions,
check the regulator at regular intervals to
avoid possible malfunctions.
If the temperature exceeds the value adjusted
at the temperature sensor, possible causes
for this are:
–The thermostat is defective due to exces-
sive temperatures.
–Valve seat and plug are contaminated
with dirt.
–Seat and plug leak due to natural wear.
Exceptional operating and installation condi-
tions can lead to changed situations that
may affect the control response and lead to
malfunctions. In such cases, check the instal-
lation conditions, process medium, tempera-
ture, and pressure conditions.
7 Customer inquiries
Contact SAMSON's After-sales Service de-
partment for support concerning mainte-
nance work or when malfunctions or defects
arise.
Please send your inquiries to:
aftersalesser[email protected]
The addresses of SAMSON AG, its subsid-
iaries, representatives and service facilities
worldwide can be found on the SAMSON
website (uwww.samson.de), in all
SAMSON product catalogs or on the back
of these Mounting and Operating Instruc-
tions.
To assist diagnosis, specify the following de-
tails:
–Type and nominal size of the valve,
Type... Thermostat
–Conguration ID
–Upstream and downstream pressure
–Temperature and process medium
–Min. and max. ow rate in m³/h
–Is a strainer installed?
–Installation drawing showing the exact
location of the regulator and all the ad-
ditionally installed components (shut-off
valves, thermometer, etc.)

14 EB 2173 EN
Nameplate
8 Nameplate
Explanations
1 ID number + Index 5Nominal pressure (valve)
2Date of manufacture 6Max. permissible differential pressure ∆p
3KVS/CV coefcient 7Mixing/diverting valve (symbol)
4Max. permissible temperature
Fig.4: Nameplate
Note:
Conversion from chromate coating to iridescent passivation
We at SAMSON are converting the surface treatment of passivated steel parts in our
production. As a result, you may receive a device assembled from parts that have
been subjected to different surface treatment methods. This means that the surfaces of
some parts show different reections. Parts can have an iridescent yellow or silver
color. This has no effect on corrosion protection.
For further information go to uwww.samson.de/chrome-en.html

SAMSON 2433K
2713 2
3 4
5
1
67

EB 2173 EN 15
Technical data
9 Technical data
Type2433KThree-wayValve
Connection Female thread Male thread
Thread size G½ G¾ G1 –
Nominal size – DN15 DN20 DN25 DN32 DN40 DN50
Medium Water · Oil
KVS coefcient 4 6.3 84 6.3 810 12.5 16
Nominal pressure PN 25
Max. perm. differential pressure Δp in bar
Mixing valve
Δp when p in B > p in A 4.4 2.6 1.8 4.4 2.6 1.8 0.9 0.6
Δp when p in A > p in B 4.4 2.6 1.8 4.4 2.6 1.8 0.9 0.6
Diverting valve
Δp when AB to A or B 4.4 2.6 1.8 4.4 2.6 1.8 0.9 0.6
Max. permissible valve
temperature 150°C
Type2430KControlThermostat
Set point range1) Continuously adjustable: 0 to 35°C, 25 to 70°C, 40 to
100°C, 50 to 120°C or 70 to 150°C
Capillary tube 2m (5m as special version)
Max. perm. temperature at sensor 50K above the adjusted set point
Perm. ambient temperature range –20 to +80°C2)
Perm. pressure at sensor/thermowell PN25/PN40
Max. permissible temperature range
of medium 0 to 150°C (with separating piece: –15 to +150°C)
Compliance ·
1) Further set point ranges on request
2) NOTICE Medium temperatures below 0 °C may cause ice to form on the valve, depending on the air humidity. This
may affect, in particular, the functioning of the stem guide or set point adjuster. This must be prevented on site by
taking appropriate precautions (e.g. enclosure, trace heater etc.).

16 EB 2173 EN
Dimensions
10 Dimensions
Fig.5: Dimensions
Type43-3·G½, G¾, and G1 connections
thermowell screw gland
Type43-3·DN15 to 50
The anges are already mounted to the
valve with anges in DN40 and 50.
Threaded ends
Welding ends
Flanges
H3
A
R
L
L3
SW
H5
L
L4
H4
R
H5
L2
L
H2
R
d
SW
H5
Bulb sensor with
12
G(G )
34
//
L1
H1
(186)
176
(220)
185
(220)
185
Ø12(Ø19) Ø9.5(Ø16)
Ø16/220mm: version as
air sensor
Values in parentheses for DN32 to 50

EB 2173 EN 17
Dimensions
10.1 Dimension tables
Table3: Type43-3 (G½ to 1 | DN15 to 50)·Dimensions in mm and weights in kg
Connection G½ G¾ G1 –
Valve size DN15 DN20 DN25 DN32 DN40 DN50
Pipe Ø d 21.3 26.9 33.7 42.4 48.3 60.3
Connection R G¾ G1 G1¼ G1¾ G2 G2½
Width across ats SW 30 36 46 59 65 82
L65 70 75 100 110 120
L1 65 75 90 –
H1 40 65 70 75
Weight 1), approx. 1.5kg 1.6kg 1.7kg 2.7kg 2.8kg 3.7kg
Threaded ends, welding ends and anges
H5 40 60 65
With threaded ends
L3 129 144 159 192 206 228
H3 72 77 82 100 108 114
Male thread A G½ G¾ G1 G1¼ G1½ G2
Weight 1), approx. 2kg 2.3kg 2.5kg 3.9kg 4.2kg 5.5kg
Withanges(PN16/25)
L4 130 150 160 180 200 230
H4 70 80 85 100 105 120
Weight 1), approx. 4.1kg 5.3kg 6.3kg 8.7kg 10.2kg 13kg
1) Weights for version with bulb sensor and thermowell · Version without thermowell: minus 0.2kg

18 EB 2173 EN

EB 2173 EN 19

SAMSON AG · MESS- UND REGELTECHNIK
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: [phone] · Fax: [phone]
[email protected] · www.samson.de
EB 2173 EN 2016-06-09 · English