Samson 4708 Series - Supply Pressure Regulators for Attachment to Positioners and Actuators

EB 8546 EN 31
Measures for preparation
5.2 Supplypressureregulators
for attachment to
positioners and actuators
The supply pressure regulator versions
intended for attachment to positioners and
actuators are equipped with various adapter
plates for the attachment.
If required, the installation position of the
supply pressure regulator can be changed
by turning it 180° on its adapter plate to al-
low the set point screw to face either up or
down.
This applies particularly to positioners that
can be mounted either to the left or right side
of the valve yoke to determine the operating
direction and fail-safe action of the actuator.
To turn the supply pressure regulator, pro-
ceed as described in section5.1.2.
The regulator is turned on its adapter plate
instead of on the connecting plate.
Supplypressureregulatorfor
Type3730/3766/3767/3787Positioner
Type4708-53xx for Type3271 Actuator
and Type3277 Actuator (120, 240 to
700cm²) with hooked-up valve accessories
1. Insert the gasket (2) into the recess of the
adapter plate (1).
2. Place the supply pressure regulator on
the positioner on the side where the
pneumatic connections SUPPLY and
OUTPUT are located. Screw tight using
the two M5 screws (3).
Type4708-54xx for rotary actuators
Proceed to mount as for Type4708-53xx.
Type4708-54xx has a second output sealed
with a stopper. This is intended for reduced
supply air. It can be used to supply a second
device, if required (e.g. a pilot-operated
solenoid valve).
Type4708-53xx
Type4708-54xx
Fig.5: Attachment on positioners