PLUNGER-TYPE PNEUMATIC DIRECTIONAL VALVE MECHANISM

This valve is intended for delivering compressed air to the exit port when it enters from either of two admission ports, the other port being connected at this time to the atmosphere. Air entering through port 1 shifts plunger 4 to the position shown and flows through passages in the plunger and port 5 to port 3 (Fig. a). The plunger shuts off air flow from port 1 to port 2 which, at this time, is…