Butterfly valve

Details Butterfly valve Butterfly valve

1978-07-20

1981-05-12

Cline, William R.

Valves and valve actuation

Rotary valves

Butterfly

251306, 251362, 251365, F16K 122

Patent

active

042667534

ABSTRACT:
In a butterfly valve comprising a valve housing including a cylindrical fluid passage and a disc-shaped valve body rotatable within the housing, a hard annular seat provided in the housing and a hard annular rim defined on the periphery of the valve body are adapted to contact one another over the entire circumference when the valve is closed. The valve of the above construction is very easy to manufacture and yet has a good sealing performance.

REFERENCES:
patent: 2011641 (1935-08-01), Kruse
patent: 2387971 (1945-10-01), Aspin et al.
patent: 3475007 (1969-10-01), Fawkes
patent: 3525499 (1970-08-01), Geiselman et al.
patent: 3684239 (1972-08-01), Schwartzbart et al.
patent: 4020869 (1977-05-01), Davis et al.
patent: 4037819 (1977-07-01), Kindersley
patent: 4058290 (1977-11-01), Nelimarkka

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