Pneumatic Actuators
A pneumatic actuator provides high stem force output for demanding service conditions. These actuators are usually air operated but some can be self operated by the process fluid.
 | Fisher spring and diaphragm pneumatic actuators can be ''direct-acting'', meaning that air to the diaphragm casing pushes the actuator stem downward. |
 | Fisher linear piston actuators are powerful, double-acting actuators that provide accurate throttling or on-off operation for sliding-stem control valves. |
 | Fisher rack-and-pinion rotary actuators are available in both double-acting and spring-return configurations. |
 | Fisher self-operated actuators provide control for a wide variety of pressure regulation applications. |
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