GM High vacuum diaphragm valve use valve rod to press rubber film directly on the valve seat, use to cut-off or connect Vacuum system. Connection form as: Lap joint flange connection, fast unload flange connection, weld type connection. Weld type connection is divided into weld I type connection(both end weld), weld II type connection(one end weld, another end insert). Applicable medium can be air and noncorrosive gases.
|Valve Leak Rate(Pa.L/S)
||-25～+80(Seal Material: chemigum)
-30～+150(Seal Material: viton)