Fluid handling – Systems – Multi-way valve unit
Patent
1996-10-31
1998-06-30
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
1372361, 13762527, 251368, 251900, F15B 13042
Patent
active
057719314
ABSTRACT:
A reciprocating sleeve type valve mechanism having a valve housing within which is located a cage element. A piston, movably positioned within the valve housing, accomplishes linear opening movement of a cylindrical seal sleeve with respect to spaced polymer seals within the housing. Closing movement of the seal sleeve is accomplished by a return spring. Sealing between the cage element and a wear resistant external ceramic liner of the seal sleeve is accomplished by a seal assembly having a centrally located elastomer seal ring with polymer backup wiper rings positioned on opposite sides thereof. The seal assembly provides a bearing and guiding function to stabilize the seal sleeve during its opening and closing movement and to wipe particulate from the sealing surface of the seal sleeve as well as to maintain efficient sealing with the seal sleeve as the valve is opened and closed.
REFERENCES:
patent: 3235224 (1966-02-01), Grove
patent: 3921660 (1975-11-01), Kowalski
patent: 4011892 (1977-03-01), Kowalski
patent: 4089534 (1978-05-01), Litherland
patent: 4404989 (1983-09-01), LeMoine
patent: 4457489 (1984-07-01), Gilmore
patent: 4887643 (1989-12-01), Tomlin et al.
patent: 5409040 (1995-04-01), Tomlin
Gilmore Valve Company
Michalsky Gerald A.
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