Inline type check valve

Details Inline type check valve Inline type check valve

1990-03-05

1992-03-03

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

251368, 251904, F16K 1502

Patent

active

050923617

ABSTRACT:
An inline type check valve having a tubular body, a mushroom or umbrella-shaped piston axially, movably mounted in the tubular body, a coil spring disposed behind the piston in the body, and a hollow disk axially removably fixed to the body. Both the body and the disk made from a synthetic resin reinforced with fibers and resiliently hooked in each other. The piston has its periphery provided with a plurality of grooves to increase the cross-sectional area for fluid flow through the valve.

REFERENCES:
patent: 1800185 (1931-04-01), Thrush
patent: 2697915 (1954-12-01), Chisholm
patent: 2930401 (1960-03-01), Cowan
patent: 3457949 (1969-07-01), Coulter
patent: 3656711 (1972-04-01), Toelke
patent: 3913614 (1975-10-01), Speck
patent: 4140148 (1979-02-01), Richter

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