Patent ID: 8397745

Claim:
A method for managing fluid flow in an output valve, comprising: providing a fluid pressure controlled actuator having a first housing and the first housing having a threaded connector configured to removably engage a threaded receiving area of an output valve having a second housing, the threaded connector providing a fluid conduit to the output valve second housing when the threaded connecter is screwed into the threaded receiving area of the output valve second housing; receiving at the fluid pressure controlled actuator a first input flow of pressurized fluid; directing, by the fluid pressure controlled actuator, at least a portion of the first input flow of pressurized fluid into a first chamber of the fluid pressure controlled actuator wherein the first input flow of pressurized fluid causes first expansion of a first diaphragm within the first chamber of the fluid pressure controlled actuator; at least partly in response to the first diaphragm first expansion, opening a previously closed first fluid passage in the first housing to cause, at least in part, fluid to flow through the threaded connector from the output valve second housing to actuate the output valve to a first position; receiving at the fluid pressure controlled actuator a pressure reduction of the first input flow of pressurized fluid; after the pressure reduction of the first input flow of pressurized fluid, receiving at the fluid pressure controlled actuator a second input flow of pressurized fluid; directing, by the fluid pressure controlled actuator, at least a portion of the second input flow of pressurized fluid into the first chamber of the fluid pressure controlled actuator wherein the second input flow of pressurized fluid causes a second expansion of the first diaphragm within the first chamber of the fluid pressure controlled actuator; at least partly in response to the first diaphragm second expansion, obstructing the first fluid passage to interrupt the fluid flow through the threaded connector from the output valve second housing, causing, at least in part, the output valve to actuate to a second position wherein the second position is spaced apart from the first position.