Fluid handling – Systems – Multi-way valve unit
Patent
1977-11-25
1979-11-06
Rosenthal, Arnold
Fluid handling
Systems
Multi-way valve unit
251175, 251181, F16K 11087
Patent
active
041732340
ABSTRACT:
A valve casing is provided with a part-spherical interior sealing surface and with three valve ports each open from the outside of the casing and through the part-spherical sealing surface thereof. A part-spherical valve body or ball is mounted in concentric very slightly spaced relation to this sealing surface of the valve casing. The valve body carries a valve seal structure and is provided with a valve body passage extending through the valve body. The valve body is rotatable within the valve casing between: (1) a first position wherein said valve body passage provides a passageway between a first and a second of the ports and said valve seal structure is in sealing relation to the valve casing sealing surface around a third of said ports; and (2) a second position wherein said valve seal structure is in sealing relation around said first port and said valve body passage provides a passageway between said second and third ports. The valve seal structure includes a valve seal ring concentrically mounted in spaced relation to and around a cylindrical boss extending outwardly from the valve body, resilient means tending to move the seal ring away from the valve body and into sealing relation with respect to the part-spherical sealing surface of the valve casing, and an O-ring sealing the space between the valve seal ring and the valve body boss.
REFERENCES:
patent: 1352423 (1920-09-01), Arbon
patent: 2821998 (1958-02-01), Mayhew
patent: 2996083 (1961-08-01), Huska
patent: 3532320 (1970-10-01), Fisch
patent: 3580540 (1971-05-01), Heinen
Platt Earl A.
Thomas David F.
Rosenthal Arnold
Waterous Company
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