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Design and principle of operation
3.1 Technical data
The nameplate on the regulator contains in-
formation on the regulator version (see
Chapter 2.1).
Process medium and scope of application
The pressure reducing valves and safety shut-
off valves (SSV) with integrated pressure re-
ducing valve are designed to maintain the
pressure downstream of the regulator to the
adjusted set point in district heating systems
or large heating networks.
Type 44-2, Type 44-3 and Type 44-9 are
suitable for controlling liquids and gases.
− Max. permissible temperatures for gases
up to 80 °C
− Air/nitrogen up to 150 °C
− Liquids up to 150 °C
The regulator is open when relieved of pres-
sure. It closes when the downstream pressure
rises above the adjusted set point.
Type test
The Type 44-3 and Type 44-9 Regulators are
shut-off valves (SSV) with integrated pressure
reducing valve and are typetested by TÜV.
The test mark is available on request.
With seals made of FKM
1)
14
Temperature range
The Type 44-2, Type 44-3 and Type 44-9
Regulators are designed for a temperature
range from 0 to +150 °C.
Leakage class
All regulators have the leakage class I ac-
cording to IEC 60534-4.
Noise emissions
SAMSON is unable to make general state-
ments about noise emissions. The noise emis-
sions depend on the regulator version, plant
facilities and process medium. On request,
SAMSON can perform calculations accord-
ing to IEC 60534, Part 8-3 and Part 8-4 or
VDMA 24422 (edition 89).
1)
Risk of hearing loss or deafness due to loud
noise.
− Wear hearing protection when working
Dimensions and weights
Table 4 provides a summary of the dimen-
sions and weights of the Type 44-2, Type 44-
3 and Type 44-9 Regulators. The lengths and
heights in the dimensional drawings are
shown on page 17 onwards.
WARNING
!
near the valve. Follow the instructions giv-
en by the plant operator.
EB 2623-1 EN
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