Fluid handling – Systems – Multi-way valve unit
Patent
1979-12-26
1981-04-21
Rosenthal, Arnold
Fluid handling
Systems
Multi-way valve unit
251358, F16K 136
Patent
active
042626986
ABSTRACT:
An improvement is provided in a valve having a valve housing defining first and second valve openings and a valve sealing element in the housing. The improvement comprises a three-piece valve sealing element. That valve sealing element comprises a first hard retainer of metal or the like, a second generally cup shaped hard retainer of metal or the like and a resilient plastic component disposed between the first and second retainers and having an exposed sloped peripheral sealing surface which surface is adapted to engage the first valve opening defined within the valve housing. The second retainer has a curved peripheral surface engageable with the second valve opening within the valve housing, the two valve openings being spaced longitudinally from each other. The valve includes a valve stem connected to the valve sealing element for movement of said valve sealing element in the housing between the two valve openings. The valve openings are generally circular as are the plastic sealing component and the second retainer. Preferably the plastic sealing element comprises polyurethane and the two retainers comprise steel or stainless steel or the like. The valve stem is disposed longitudinally within the housing and the valve sealing element is secured to one end thereof and extends transversely of the housing. The first retainer may be a flat disc of smaller diameter than the sealing component and second retainer. The valve sealing element provides improved gradual closing of both the first and second openings in the housing. Moreover, the valve sealing element is readily assembled and disassembled for removal and substitution of the wearable valve sealing component. The valve sealing element is inexpensive, durable and efficient.
REFERENCES:
patent: 21332 (1858-08-01), Fuller
patent: 2639728 (1953-05-01), Briechle
patent: 4128110 (1978-12-01), Haytayan
Nist Donald E.
Rosenthal Arnold
Yardney Electric Corporation
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