Samson 41-73 Series, Mounting And Operating Instructions

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EB 2517 EN 3-3
Design and principle of operation
3.1 Additional fittings
Î
See Fig. 3-2
Strainers
We recommend installing a SAMSON
strainer (2) upstream of the valve. It prevents
solid particles in the process medium from
damaging the regulator.
Î
Do not use the strainer to permanently
filter the process medium.
Î
Select a strainer (mesh size) suitable for
the process medium.
Any impurities carried along by the process
medium may impair the proper functioning
of the regulator. We recommend installing a
strainer (e.g. SAMSON Type 2 NI) upstream
of the excess pressure valve (
u
EB 1015) .
Note
Pressure gauges
Install a pressure gauge (3 and 5) both up-
stream and downstream of the regulator to
monitor the pressures prevailing in the plant.
Bypass and shut-off valves
We recommend installing a shut-off valve (1
and 6) both upstream of the strainer and
downstream of the regulator and installing a
bypass line. The bypass ensures that the
plant does not need to be shut down for ser-
vice and repair work on the regulator.
Insulation
Regulators can be insulated to reduce heat
energy transfer.
Refer to the instructions in the 'Installation'
section.
1 Shut-off valve
2 Strainer
3 Upstream pressure gauge
4
Excess pressure valve
5 Downstream pressure gauge
6 Shut-off valve
18 Compensation chamber, e.g. for
steam
1 2 4 3 5 6 18
Fig. 3-2: Installation example