Butterfly valve and a method of manufacture of said valve

Details Butterfly valve and a method of manufacture of said valve Butterfly valve and a method of manufacture of said valve

1980-04-17

1983-12-13

Chambers, A. Michael

Valves and valve actuation

Rotary valves

Ball valve

251307, 251308, 251367, 291571R, F16K 122, B23P 1500

Patent

active

044201400

ABSTRACT:
The butterfly valve comprises a valve body traversed by a passageway and a closure element or butterfly valve disk placed transversely with respect to the passageway. An annular bearing surface of the valve disk is intended to bear on a valve seat placed within the passageway. The valve body is constituted by an annular member provided with a chimney in which an operating shaft is mounted. The annular member is supported in leak-tight manner by a bearing ring having a greater thickness in the radial direction than the wall of the annular member. The bearing ring is inserted between the two end portions of the piping system and forms part of the valve body under operational conditions.

REFERENCES:
patent: 2309666 (1943-02-01), Parker
patent: 3591133 (1971-07-01), Miles et al.
patent: 3705707 (1972-12-01), Scaramucci
patent: 3997142 (1976-12-01), Broadway
patent: 4038734 (1977-08-01), Goldman
patent: 4055323 (1977-10-01), Gachot
patent: 4254937 (1981-03-01), Hubertson

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