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3.1 Additional fittings
Î See Fig. 3-3
Pressure gauges
Install a pressure gauge (3 and 5) at suitable
points to monitor the pressures prevailing in
the plant.
Shut-off valves
We recommend installing a shut-off valve (1
and 6) both upstream of the strainer and
downstream of the regulator.
Type 45-1 and Type 45-2 in the flow pipe
1
2
4
6
1
Shut-off valve
2
Strainer
Pressure gauge (flow
3
pipe)
Fig. 3-3: Installation example: installed in the flow and return flow pipe
EB 3124 EN
3
–
+
p
M
5
Differential pressure
4
regulator
Pressure gauge (return flow
5
pipe)
Design and principle of operation
Strainer
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.
Note
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 pressure reducing valve (u EB 1015).
Type 45-3 and Type 45-4 in the return flow pipe
1
2
–
p
+
6
4
6
Shut-off valve
3
M
5
3-3
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