Samson series 43, Монтаж и эксплуатация

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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.
