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Refer to installation schematics (Fig. 3) for
line routing.
2.3
Strainer
Install a strainer (e.g. SAMSON Type 1FN)
upstream of the regulator to prevent sealing
particles, weld spatter, pipe scale and other
impurities carried along by the process me-
dium from impairing the proper operation,
especially the tight shut-off of the valve.
Make sure that the medium flow corresponds
with the direction indicated by the arrow on
the strainer body.
Install the strainer with the filter element sus-
pended downward. Ensure that ample space
is available to remove the filter.
2.4
Shut-off valves, pressure
gauges
Ideally, install hand-operated shut-off valves
both upstream of the strainer and down-
stream of the differential pressure regulator.
This allows the plant to be shut down for
cleaning and maintenance routines, or when
the plant is not operated for long periods of
time.
To monitor the pressures prevailing in the
plant, install pressure gauges both upstream
and downstream of the regulator and in the
flow and return flow pipes at the pressure
tapping points.
Correct!
4.4 · Connection at the side – correct
4.3 · Connection at the top – incorrect
4.2 · Connection at the bottom – incorrect
min.
min.
3 x DN
3 x DN
M
DN = Nominal size
4.1 · Control line connection, depending on
how the pipeline is routed
Fig. 4 · Control line connection
Installation
DN
min.
3 x DN
7
EB 3130 EN
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