Valve casing for use in a butterfly valve

Details Valve casing for use in a butterfly valve Valve casing for use in a butterfly valve

1986-12-31

1989-02-21

Chambers, A. Michael

Valves and valve actuation

Rotary valves

Butterfly

137375, F16L 700

Patent

active

048058742

ABSTRACT:
In the valve casing according to the invention, a cylindrical elastic member is fitted to solidly coat a whole inner surface of the valve casing to form a passage, while performing a function as a seal ring for pipe lines and a function as a seat ring for a valve disc.

REFERENCES:
patent: 3073336 (1963-01-01), Johnson
patent: 3721245 (1973-03-01), Jones et al.
patent: 3902697 (1975-09-01), Robinson
patent: 3961405 (1976-06-01), Robinson
patent: 4272054 (1981-06-01), Zinnai
patent: 4669499 (1987-06-01), Miyake et al.

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