POSITIVE PRESSURE ACTUATED AERATOR VALVE ASSEMBLY

摘要

A positive pressure actuated aerator valve assembly adapted to discharge compressed gas into the chamber of a bulk material handling structure. The aerator valv e assembly includes a housing and positive pressure actuated valve. The housing include s a chamber adapted to receive compressed gas and a discharge piston slideable between a n extended position and a retracted position. The valve includes a valve body having an actuator piston seat and a fluid vent passageway in fluid communication with the actuator piston seat. An actuator piston is slideable with respect to the valve body between a retracted position and an extended position. A positive displacement force is applied to the actuator piston, such as by the supply of pressurized gas to the valve, to slide the actuator piston fro m the retracted position toward the extended position whereupon gas within the chamber of th e housing flows through the fluid vent passageway and the discharge piston is moved fr om the extended position to the retracted position by gas within the chamber to thereby plac e the chamber of the housing in fluid communication with the fluid passageway of the piston seat.