I-Tork PDS Pneumatic Actuator
Installation and operating manual (PDS-M0108/1010)
I-TORK PDS PNEUMATIC ACTUATOR
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2)
Installation and Mounting on the Valve
I-Tork PDS can be mounted in any position, ie: Vertical or Horizontal.
It is very important that the actuator shaft and the valve stem are centered and
must have a 0.5 ~ 1 mm gap between the actuator shaft and the valve shaft (or
driving bush) depending on the actuator size. If the valve stem is too high, it may
force the actuator shaft upward thus displacing the shaft seal. This would cause air
leakage at the shaft seal.
Please note that the actuator has a hexagonal drive shaft.
Do not mount the actuator at a 45
˚
angle.
All the mounting dimensions of PDS series follows international standard and as
follows.
Top mounting hole : VDI/VDE3845
Top end of shaft : NAMUR for installation of Limit Switch Box or Positioner.
Bottom Mounting Hole: ISO5211
Bottom End of Shaft: Double Square for Easy Mounting (ISO5211)
3)
Piping (Air Tubing)
All I-Tork PDS actuators can be piped with solid or flexible tubing with the solenoid
valve mounted remotely from the actuator or by mounting a NAMUR designed solenoid
valve directly onto the NAMUR mounting pad on the side of the actuator.
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Precaution
Please check the environmental conditions (Temperature, Pressure,
Characteristics of fluid, Piping standard) before piping.
If air tubing connection is not properly fitted, it may cause lower torque,
shorten the life cycle of actuator. Connection of actuator is PT 1/4” for PDS
40~200.
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Solenoid valve
Be sure that the solenoid valve’s connection type is compatible to the
actuator’s.
