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The regulator is open when relieved of pres-
sure. The valve closes when the differential
pressure rises.
Note
The materials used in the regulator are also
resistant to high concentrations of glycol.
Nevertheless, glycol reacts when it comes in-
to contact with metals and causes acids to
form. We cannot prevent this reaction.
Therefore, prevent it through the use of suit-
able inhibitors.
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 regulator is config-
ured, it can be used up to temperatures of
150 °C/300 °F (see Table 3-1). The mini-
mum temperature is limited by the actuator's
diaphragm material (u T 3013).
EB 3124 EN
Design and principle of operation
WARNING
!
Risk of hearing loss or deafness due to loud
noise.
− Wear hearing protection when working
near the valve. Follow the instructions giv-
en by the plant operator.
Note
The Types 45-1, 45-2, 45-3 and 45-4 Regu-
lators are not safety valves.
If necessary, a suitable overpressure
protection must be installed on site in the
plant section.
Dimensions and weights
Table 3-3 to Table 3-4 provide an overview
of the dimensions and weights. The lengths
and heights in the dimensional drawings are
shown on page 3-8.
3-5
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