Check valve

Details Check valve Check valve

1990-03-28

1993-02-02

Rivell, John

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

1375125, 1375143, 1375145, 137539, 13754321, 251368, F16K 1504

Patent

active

051830752

ABSTRACT:
Check valve with a movable valve element (3), especially a valve element that is manufactured from a ball, said valve element possessing a spherical surface (7) which faces a valve seat (5) and serves as a sealing surface, possessing a radial guidance zone (11) that faces a bore (1) inside which it itself is received, and containing recesses (8) for the medium flow, said recesses connecting the region (9) of the bore (11) upstream of the guidance zone (11) to the region (10) downstream thereof.

REFERENCES:
patent: 654552 (1900-07-01), Morris
patent: 676855 (1901-06-01), Shoemaker
patent: 1398967 (1921-12-01), Humason et al.
patent: 2451586 (1948-10-01), Strid
patent: 2697915 (1954-12-01), Chisholm
patent: 2755816 (1956-07-01), Collins
patent: 3153423 (1964-10-01), Biello
patent: 3894556 (1975-07-01), Pareja
patent: 4246002 (1981-01-01), Bell
patent: 4368752 (1983-01-01), Tamamori et al.
patent: 4662392 (1987-05-01), Vadasz

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