Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve
Patent
1976-10-14
1977-08-30
Weakley, Harold W.
Valves and valve actuation
With means to increase head and seat contact pressure
Seat pressed to valve
251174, 251315, 251317, F16K 2500
Patent
active
040449947
ABSTRACT:
There is disclosed a unique sealing arrangement for a valve of the type which includes a first element defining a valve body having a fluid passage extending therethrough, with a second, flow control element rotatably disposed in said passage for controlling the flow of fluid through said valve by movement between valve open and valve close positions. One of said elements, either the valve body or the flow control member, includes an annular sealing surface, while the other of said elements is provided with an annular seal ring support groove confronting said sealing surface in relative close proximity thereto, and having an annular seal ring member disposed therein. The seal ring member includes, in section, a first leg portion which provides an anchoring flange that is clamped between opposed side walls of the support groove, and a second leg portion including a free end and being formed to a reverse bent, hook-like configuration with a bight segment thereof extending from said groove for engagement with said sealing surface. The free end of said reverse bent configuration is spaced from the remainder of the seal to define an open mouth portion which permits line fluid to enter the interior or plenum chamber of the seal ring member thereby pressure loading said seal ring member into sealing engagement with said annular sealing surface and the side wall of the support groove. In addition, there is provided lip means extending transversely of said free end of the seal ring member which is engaged upon shoulder means provided on the opposed, confronting side wall surface of the support groove.
REFERENCES:
patent: 3084715 (1963-04-01), Scharres
patent: 3181834 (1965-05-01), Jennings
patent: 3409269 (1968-11-01), Fawkes
patent: 3528448 (1970-09-01), Urban
patent: 3563510 (1971-02-01), Priese
patent: 3734457 (1973-05-01), Roos
Hills-McCanna Company
Weakley Harold W.
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