Pneumatically operated distributor valve - has inlet outlet and exhaust connections sealed by membrane and actuated from diaphragm

摘要

The valve has a casing (1) closed by end plates (4) and (5) which hold the end diaphragms (6) and (7). A central guide (3) operates between the diaphragm. A central core (40) guides the valve actuators (17) and (21). The valve actuators are connected to a continuous flexible membrane (15) which sits on the inlet and outlet valve seats. When the central guide moves to one side under diaphragm air pressure, the valve actuator moves against the inner side of the central guide and opens or closes the valve.