Sludge pump valve

Details Sludge pump valve Sludge pump valve

1992-06-09

1993-03-16

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

251332, F16K 1506

Patent

active

051935775

ABSTRACT:
A sludge pump valve for use in pumping systems which pump aggressive, abrasive, and corrosive liquids containing granular material, pumped over long distances and at high pressures, employs a pair of elastic sealing elements provided, respectively, with spherically configured convex and concave surfaces that mate along a spherical contact surface during valve closing to effect leak-free seal of the valve, the arrangement being such that valve is made more maintainence free and has a longer service life.

REFERENCES:
patent: 2002672 (1935-05-01), Melott
patent: 2011547 (1935-08-01), Campbell
patent: 2163472 (1939-06-01), Shimer
patent: 2900999 (1959-08-01), Courtot
patent: 3191617 (1965-06-01), Maddox
patent: 3332437 (1967-07-01), Hallen
patent: 3409039 (1968-11-01), Griffin
patent: 3540472 (1970-11-01), Brady et al.
patent: 4860995 (1989-08-01), Rogers
patent: 4922957 (1990-05-01), Johnson
patent: 4951707 (1990-08-01), Johnson

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