Butterfly valve having high performance disc

Details Butterfly valve having high performance disc Butterfly valve having high performance disc

1977-10-11

1980-03-25

Cline, William R.

Valves and valve actuation

Rotary valves

Butterfly

F16K 122

Patent

active

041947223

ABSTRACT:
A butterfly valve is provided with a high performance disc having a wedge-shaped leading half formed by a pair of flat surfaces converging towards a leading edge from a portion of maximum disc thickness positioned forward of the disc axis. The trailing half of the disc also has a pair of flat surfaces diverging from a portion of the disc adjacent the axis, thereby forming a wedge projecting into the leading half.

REFERENCES:
patent: 2271390 (1942-01-01), Dodson
patent: 2273118 (1942-02-01), Langdon
patent: 2750955 (1956-06-01), Bredtschneider et al.
patent: 2927181 (1960-03-01), Schneider
patent: 3078069 (1963-02-01), Broadbent
patent: 3113593 (1963-12-01), Vicard
patent: 3442489 (1969-05-01), Cary et al.
patent: 3485476 (1969-12-01), Hemphill
patent: 3516640 (1970-06-01), Bryer et al.
patent: 3677297 (1972-07-01), Walton
patent: 3680833 (1972-08-01), McNeely, Jr.
patent: 3770242 (1973-11-01), O'Connor, Jr.
patent: 3926215 (1975-12-01), MacLeod
patent: 3960177 (1976-06-01), Baumann
Carl D. Wilson, "Fishtail vs Conventional Discs in Butterfly Valves," 3/1968 issue, Instruments & Control Systems.

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