Drain valve

Details Drain valve Drain valve

1986-11-14

1987-11-24

Cohan, Alan

Fluid handling

Systems

System with plural openings, one a gas vent or access opening

251215, 251218, F16K 2400

Patent

active

047081716

ABSTRACT:
The valve includes a valve member adapted to be moved axially between open and closed positions in a valve housing when the valve member is rotated. The valve member includes a passage for admitting air into a vacuumized vessel and includes a separate passage for draining liquid from the vessel when the valve member is in its open position. An O-ring establishes a primary seal between the valve member and the valve housing and is retained within the housing in all positions of the valve member.

REFERENCES:
patent: 2046474 (1936-07-01), Maggenti
patent: 2810398 (1957-10-01), Carlson
patent: 3698431 (1972-10-01), Thompson
patent: 3820564 (1974-06-01), Wagner
patent: 4417601 (1983-11-01), Bennett
patent: 4440193 (1984-04-01), Matheson
patent: 4611627 (1986-09-01), Eidsvoog et al.
patent: 4619764 (1986-10-01), Church et al.

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