Flowserve 4 Series Kämmer Pneumatic and Electropneumatic Actuators - Manual (Page 10)

10
Flow Control Division
Kammer Control Valves
Air-to-open Air-to-close
Fig. 6
5.7 Changing the Actuator Action
To change the actuator action from fail-open to fail-closed, or vice versa, the complete actuator
must be reversed. Remove the yoke assembly and actuator cap, invert the actuator and replace all
parts. If necessary, use other spring sets (see spare parts list) according to the actuator thrust
requirements.