Check valve

Details Check valve Check valve

1974-03-22

1976-02-10

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

251152, 251123, F16K 1503

Patent

active

039372405

ABSTRACT:
A check valve adapted for mounting between the faces of a pair of pipe flanges having flow passages of equal diameters and joined by bolts circumferentially spaced about the flanges. A valve body having a cylindrical flow passage therethrough is formed with end sections, each of which has a surface adapted for sealing engagement with a face of the pipe flanges, and a clapper being mounted for pivoting between a closed position completely blocking the valve body flow passage and an open position withdrawn from the flow passage but within the valve body.

REFERENCES:
patent: 1720444 (1929-07-01), Rowley
patent: 2589176 (1952-03-01), Wheatley
patent: 2809010 (1957-10-01), Ipsen et al.
patent: 2925827 (1960-02-01), Anderson et al.
patent: 2930400 (1960-03-01), Wheatley
patent: 2969492 (1961-01-01), Wheatley
patent: 3131719 (1964-05-01), Englert et al.
patent: 3265060 (1966-08-01), Schreiber
patent: 3616814 (1971-11-01), Hendley
patent: 3687155 (1972-08-01), Wheatley
patent: 3720225 (1973-03-01), Wheatley, Jr.

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