Vacuum valve

Details Vacuum valve Vacuum valve

1996-06-12

1998-11-10

Chambers, A. Michael

Valves and valve actuation

With correlated flow path

Pipe coupling or union

251144, 25112915, F16K 5100

Patent

active

058332120

ABSTRACT:
A vacuum valve is used in vacuum systems having connectors including an internally threaded system component with connector seal, a KF-thread flange with connector seal, and a nut collar with clamping rings and pipe. The valve includes one valve case with an interior and at least two spaced apart openings communicating with the interior. The case defines a valve seat and has a valve member movable in the interior and into positions against the valve seat and away from the valve seat to close and open the valve. A driver is connected to the valve case for moving the valve member. A separate externally threaded nipple is provided around each opening and special sealing surfaces are on each nipple for connection to each of the vacuum system connectors in a vacuum-tight manner.

REFERENCES:
patent: 3478779 (1969-11-01), Gilmont et al.
patent: 4637433 (1987-01-01), Stoll
patent: 5082243 (1992-01-01), Berglund et al.

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