Fisher™ Rotary Actuator

 
All Fisher® brand internal valves can be ordered with a pneumatic actuators that permits the valve to be opened and closed from a remote location. For the P700 Series, when air pressure is applied to the actuator, pistons act on a gear assembly that rotates the internal valve lever to the open position. Upon loss of air pressure, the valve will return to the closed position. Besides air pressure, nitrogen or carbon dioxide can also be used to pressure the actuators. In addition, the P700 Series supply source can be propane vapor.
Use of a pneumatic actuator permits the opening and closing of the internal valve to be tied into the air brake of the transport or bobtail. Pneumatic Actuators can also provide a convenient way to remotely operate a number of internal valves on stationary storage tanks at bulk plants.