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Installation
NOTICE
!
Do not attach supports directly to the regula-
tor.
Depending on the regulator version and
mounting position, the regulator and pipe-
line must be supported or suspended.
Standard mounting position,
suspended
All versions
− Air, gases and liquids: max.
150 °C
Alternative mounting position,
actuator on top
− Air, gases and liquids: max.
80 °C
Alternative mounting position in
riser pipes: DN 15 to 25
Version with fixed plug guide plus:
− Air, gases and liquids: max.
150 °C
Fig. 5-1: Mounting position
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.
5-2
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.
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 (see Fig. 5-2 and
Table 5-1).
5.2 Preparation for installation
Before mounting, make sure the following
conditions are met:
− The regulator is clean.
− The regulator and all piping are not
damaged.
− Install a strainer upstream of the regula-
tor.
− The valve data on the nameplate (type
designation, nominal size, material,
pressure rating and temperature range)
match the plant conditions (nominal size
and pressure rating of the pipeline, me-
dium temperature etc.). See the 'Mark-
ings on the device' chapter for name-
plate details.
− The requested or required additional fit-
tings (see the 'Design and principle of
operation' chapter) have been installed
EB 3124 EN
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