Patent ID: 7517376

Claim:
An air supply system adapted to provide a reverse pulse of air for cleaning a filter element located in a filter house, said system comprising: a pressure vessel adapted to contain a volume of compressed air to be used for supplying said reverse pulse, said pressure vessel having a wall with at least one outlet aperture therein; valve means mounted to said wall around said aperture to control the flow of air from said pressure vessel, said valve means comprising a valve body having an inlet, an outlet and a flow passage connecting the inlet and outlet, said inlet, said outlet and said flow passage generally extending axially through said valve body, a valve seat surrounding said flow passage, and a valve closure member movable towards and away from said valve seat into closed and open positions to thereby close or open said flow passage, and operating means for moving said valve closure member between said closed and open positions; and a conduit mounted to said valve body around said outlet and outside of said pressure vessel, said conduit adapted to extend into said filter house in use so as to direct a pulse of air towards a filter element to be cleaned when said valve closure member is in said open position.