DIAPHRAGM-TYPE PNEUMATIC VALVE MECHANISM FOR RAPID AIR DISCHARGE TO THE ATMOSPHERE

Compressed air is delivered through a directional valve to port 1 and, forcing diaphragm 2 downward shuts off port 3 which is connected to the atmosphere (Fig. a). The air flows through twelve peripheral holes in the diaphragm to outlet port 4 of the valve which is connected to a power cylinder. In emptying the cylinder (Fig. b), the directional valve connects port 1 to the atmosphere and air from…