Butterfly valve

Details Butterfly valve Butterfly valve

1976-02-12

1977-10-25

Cline, William R.

Valves and valve actuation

Rotary valves

Butterfly

F16K 122

Patent

active

040553230

ABSTRACT:
A butterfly valve designed primarily for piping systems in which corrosive fluids are circulated at high temperature comprises a pivotally mounted disc having a convex annular edge portion associated with an annular seal which projects within the valve passage. The seal is formed by a specially shaped removable metallic ring coated with plastic material and having a flared cylindrical mouthpiece which is applied in fluid-tight contact with the edge portion of the valve disc and held in position within the valve passage by a retaining ring.

REFERENCES:
patent: 2755113 (1956-07-01), Baumheckel
patent: 2797944 (1957-07-01), Riesing
patent: 2809060 (1957-10-01), Thompson
patent: 3048363 (1962-08-01), Garrigan
patent: 3552407 (1971-01-01), Hirano
patent: 3565395 (1971-02-01), Hansen
patent: 3666236 (1972-05-01), Gachot
patent: 3771763 (1973-11-01), Myers

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