Three pot two way check valve

Details Three pot two way check valve Three pot two way check valve

1975-05-16

1976-08-17

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

137513, 137527, F16K 1503

Patent

active

039748480

ABSTRACT:
A three port, two way check valve is disclosed. It is made of a standard tee and standard flanges attached thereto, typically in conformance with API standards. A flat disc is inserted in one of the openings, the disc incorporating an inernal circular valve seat and a hinged valve member which closes against the disc. A similar apparatus is installed in the center port of the tee. The flapper valve elements are connected together by a connecting rod. The connecting rod assures that when one is pulled closed that the other is pulled open. The connecting rod assures that the check valve function is obtained.

REFERENCES:
patent: 878239 (1908-02-01), Rubach
patent: 1553940 (1925-09-01), Kangieser
patent: 2711188 (1955-06-01), Nickerson
patent: 2925825 (1960-02-01), Staiger
patent: 3202165 (1965-08-01), Yavicoli
patent: 3394731 (1968-07-01), Elliott

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