Samson 42-34 Mounting And Operating Instructions page 32

Installation
Balanced by a bellows or
diaphragm
−
−
Balanced by a diaphragm
−
Balanced by a bellows
−
Balanced by a diaphragm
−
Balanced by a bellows
−
Fig. 5-1: Mounting position
Support or suspension
Note
The plant engineering company is responsi-
ble for selecting and implementing a suitable
support or suspension of the installed regula-
tor and the pipeline.
NOTICE
!
Do not attach supports directly to the valve
or actuator.
Depending on the regulator version and
mounting position, the valve, actuator and
pipeline must be supported or suspended.
5-2
Standard installation for all
versions
Above 80 °C · Only
balanced by a bellows
All versions up to max.
80 °C
All versions DN 15 to 80
plus up to max. 80 °C
All versions up to max.
80 °C
All versions with fixed plug
guide plus up to max. 80 °C
Control line
Route the control lines on site preferably us-
ing a 8x1 mm (stainless) steel pipe. The pres-
sure tapping point must at least three times
the nominal size (DN) away from any pipe
fittings (e.g. restrictions, bends or branches),
that may cause turbulence in the flow. How
the lines are routed generally depends on
the installation site.
Î Preferably connect the control line to the
side of the main pipe (see Fig. 5-2 and
Table 5-1).
Î Do not change the pipe diameter of the
main pipeline with an eccentric reducer.
Tip
Control line kits, needle valves, condensation
chambers and compression-type screw fit-
tings can be supplied as required. These ac-
cessories are listed in
Needle valve
To additionally dampen the regulator or to
shut off the control lines, we recommend also
installing a needle valve in the control line in
addition to the standard SAMSON screw
joint with restriction. The standard SAMSON
screw joint with restriction is located in the
compression-type fitting at the (+) connection
of the diaphragm actuator.
T 3095.
u
EB 3013 EN