High performance butterfly valve

Details High performance butterfly valve High performance butterfly valve

1995-04-17

2000-02-29

Fox, John

Valves and valve actuation

Rotary valves

Butterfly

F16K 122

Patent

active

060299495

ABSTRACT:
An improved high performance butterfly is provided. The valve includes a valve body, a disk, an annular seat and a shaft. The disk has at least a portion of the circumference of the peripheral edge notched or beveled to provide better clearance of the annular seat and to reduce wear on the seat. The centerline of the shaft, corresponding to the center of rotation of the disk, is slightly offset from the centerline of the valve.

REFERENCES:
patent: 3080145 (1963-03-01), Swain
patent: 3677297 (1972-07-01), Walton
patent: 3963213 (1976-06-01), Brattberg
patent: 4037819 (1977-07-01), Kindersley
patent: 4058290 (1977-11-01), Nelimarkka
patent: 4605201 (1986-08-01), Miyazaki
patent: 4759530 (1988-07-01), Iff
patent: 4770393 (1988-09-01), Hubertson
patent: 4809948 (1989-03-01), Gardner et al.
patent: 5125624 (1992-06-01), Yohner
patent: 5158265 (1992-10-01), Miyairi

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