Valve

Details Valve Valve

1989-10-27

1990-05-29

Fox, John C.

Valves and valve actuation

Rotary valves

Ball valve

251367, F16K 506

Patent

active

049289241

ABSTRACT:
A valve, which consists of a housing (1) provided with a through flow duct (2); of a closing member (3), which is shaped as a body of revolution or as a part of such body, which has been placed into the housing through an opening (7) provided on the housing, and which is fitted in the through flow duct turnably or rotably; of sealing members (5,6) fitted between the closing member (3) and the housing (1); of a cover (8) that covers the opening (7) in the housing as pressure-proof; of locking and sealing members (9,10,14) for locking and sealing the cover (8) on the housing (1); as well as of sealing members (22) for sealing the turning shaft (21) of the closing member. The cover (8) is supported against the pressure force by means of a stop face (12) placed at the circumference of the opening (7) on the housing and facing towards the interior of the housing. The cover (8) is locked on the housing (1) by means of an annular auxiliary cover (14) fitted outside the cover, said auxiliary cover being attached detachably both to the housing (1) and to the cover (8) and being provided with sealing members (17,18) both between the auxiliary cover (14) and the housing (1) and between the auxiliary cover (14) and the cover (8).

REFERENCES:
patent: 4423749 (1984-01-01), Schmitt
patent: 4634098 (1987-01-01), Varden

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