Gas line check valve

Details Gas line check valve Gas line check valve

1992-11-19

1993-08-31

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

137538, 137543, F16K 1506

Patent

active

052400379

ABSTRACT:
A low pressure gas flow check valve is formed by a relatively thin disc having an central aperture and valve seat is adapted to be interposed between adjacent flanges in a pipeline. The check valve includes a valve body axially connected with one face of the disc. The valve body has inlet and outlet bores and a valve for seating on the valve seat and is surrounded by the bore of the pipeline. A spring normally urges the valve to its sealed position to prevent downstream fluid tending to flow in an upstream direction.

REFERENCES:
patent: 2602631 (1952-07-01), Eichmeyer
patent: 2624587 (1953-01-01), Watson et al.
patent: 2943639 (1960-07-01), Smith
patent: 3995658 (1976-12-01), Hager
patent: 4203466 (1980-05-01), Hager
patent: 4273155 (1981-06-01), Euerle
patent: 4391295 (1983-07-01), Stipe
patent: 4485844 (1984-12-01), Vander Kaay et al.
patent: 4543986 (1985-10-01), Byrne
patent: 4782855 (1988-11-01), Scaramucci
patent: 4911196 (1990-03-01), Kemp

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