Introduction and Application:
The valve is a pneumatically controlled cone valve with normally open or normally closed
This valve is suitable for use in vacuum systems
The fuselage is made of aluminum alloy
(4) is the compressed air inlet
When the valve is used normally, (1) is the vacuum pump interface, (2) is the pressure relief port, and (3) is the action port.
When the valve is used as a normally closed, (1) is the pressure relief port, (2) is the vacuum pump interface, and (3) is the action port.