P731 - Fits : C407-10 
P713 - Fits : C404-24 & C484-24
P723 - Fits : C403-24 & C483-24
P739 - Fits : C402, C421, C427, C471, & C477
P714 - Fits : C404-32
 
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.
 
Types P731 Rotary Actuator – The actuator attaches directly to the valve after removal of the cable operating
lever. Included in each assembly is an operating lever and appropriate mounting hardware specific to each respective valve in addition to air pressure, nitrogen and carbon dioxide, the P700 Series can be actuated with propane vapor.