Diaphragm multi-spring pneumatic actuators type P1/R1

The multi-spring diaphragm pneumatic actuators of P1/R1 type are applied for control operation of control valves
and other positioning elements in industrial automatic systems.
There are three design options of the acutators:
– direct action (air – ejects the stem) – type P1,
– reverse action (air – retracts the stem) – type R1,
– direct action, handwheel – type P1B,
– reverse action, handwheel – type R1B