Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1995-11-15
1997-09-09
Rivell, John
Fluid handling
Line condition change responsive valves
Direct response valves
137540, 13754317, F16K 1502
Patent
active
056646020
ABSTRACT:
A fluid check valve for preventing back flow of fluid through a fluid conduit. The check valve is connected in series with a meter run to enable unrestricted normal flow to occur through a passageway in the valve body, and to prevent backflow. A throat forms the entrance into a passageway, and a valve seat is formed behind the throat. A valve cage mounts a valve element for movement within the passageway so that the valve element moves toward and away from the valve seat and during normal flow the valve element is spaced from the valve seat. Should any significant backflow commence, the valve element sealingly engages the valve seat to prevent the occurrence of such backflow. Downstream of the throat and seat there is a wall that enlarges outwardly and radially into a circumferentially extending slot having an outside diameter greater than the diameter of the passageway. The cage has a main central body part to which there is integrally attached a plurality of radially extending legs for attachment into the circumferentially extending locking groove to hold the cage in position within the passageway and to abuttingly engage the valve element.
REFERENCES:
patent: 512369 (1894-01-01), Garis et al.
patent: 2401856 (1946-06-01), Brock
patent: 2609175 (1952-09-01), Kokeritz
patent: 2649277 (1953-08-01), Blackford
patent: 2690763 (1954-10-01), Seligman
patent: 2710023 (1955-06-01), Blackford et al.
patent: 2754844 (1956-07-01), Blackford
patent: 3016913 (1962-01-01), Bargmann
patent: 3109451 (1963-11-01), Mihalakis
patent: 3244195 (1966-04-01), Wanner
patent: 3378030 (1968-04-01), Cary
patent: 3749122 (1973-07-01), Gold
patent: 3854496 (1974-12-01), Broszeit
patent: 3895647 (1975-07-01), Willenbrock et al.
patent: 4354520 (1982-10-01), Easley, Jr.
patent: 4667697 (1987-05-01), Crawford
patent: 4766930 (1988-08-01), Patti
patent: 4819689 (1989-04-01), Owsley et al.
patent: 4907616 (1990-03-01), Bergsma
Bates Marcus L.
Rivell John
LandOfFree
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