Patent ID: 8813859

Claim:
A fire suppression system comprising a reservoir to contain a fire suppressant material, said reservoir having an outlet, at least one nozzle from which the suppressant material is delivered, and a valve governing passage of the suppressant material to said at least one nozzle, said valve comprising a movable valve member and first and second valve seats cooperating therewith, said movable valve member being movable from a first position seated with respect to said first valve seat preventing communication between said reservoir and said at least one nozzle, to a second position seated with respect to said second valve seat permitting the flow of said suppressant material from said reservoir to said at least one nozzle and preventing suppressant material flow to an actuator operatively associated with said valve to selectively cause movement of said movable valve member from said first position to said second position; wherein the movable valve member comprises a diaphragm having opposing sides, and a sealing means on both sides directly adjacent to the diaphragm, thereby permitting sealing of the movable valve member against either of the first or second valve seats; and wherein said actuator maintains a fluid or gas under pressure against one side of said movable valve member to position said movable valve member in said first position, said actuator being operable to vent said fluid or gas and permit pressure applied against the other side of said movable valve member to move said movable valve member to said second position.