Fluid handling – With indicator – register – recorder – alarm or inspection means – Inspection means
Patent
1989-08-30
1991-01-08
Rosenthal, Arnold
Fluid handling
With indicator, register, recorder, alarm or inspection means
Inspection means
13762547, 251314, 251317, F16K 11085, F16K 504
Patent
active
049827600
ABSTRACT:
A valve assembly for controlling fluid flow through at least three flowlines comprises a housing having a cylindrical central cavity with at least three ports opening therethrough, the housing further having at least three conduits for making fluid connection between the flowlines and a corresponding one of the ports. A flow control signal is rotatably mounted within the central cavity having at least three radial bores therethrough and intersecting therein for completing a fluid path between selected ones of the ports. A radial seal is supported by the spool and is configured to prevent fluid migration into the central cavity from non-selected ones of the ports. The spool can be positioned to complete a flowpath between any two or any three of the flowlines while the non-selected flowline is positively sealed. The housing and spool are composed of a non-opaque or transparent material to permit direct observation of the fluid passing therethrough. The radial seal includes a sealing face having a contour corresponding to the outer cylindrical shape of the spool and a central opening therethrough so that the radial seal sealingly engages the inner wall of the central cavity about one of the ports. The radial seal includes a sealing face which is defined by a dome, having an axis of symmetry, with a cylindrical relief along an axis perpendicular to said axis of symmetry.
REFERENCES:
patent: 2970805 (1961-02-01), Pool
patent: 3033515 (1962-05-01), Brisbane
patent: 3721265 (1973-03-01), Hoffland
patent: 4014513 (1977-03-01), Bake et al.
patent: 4704983 (1987-11-01), Rung
Flotec, Inc.
Rosenthal Arnold
LandOfFree
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