THREE-WAY TWO-POSITION POPPET-TYPE MEMBRANE-OPERATED PNEUMATIC DIRECTIONAL VALVE MECHANISM

When there is no mechanical actuation, compressed air, supplied from the main, passes through connection 1 into chamber 9 (Fig. a). Chamber 2, the valve outlet, is connected to chamber 3 which is connected to the atmosphere through holes and a central channel in bushing 4. When rubber membrane 5 is pressed, plunger 6 is pushed downward. At first, rubber insert 10 closes off the central channel in …