Asymmetric seal segment configuration

Details Asymmetric seal segment configuration Asymmetric seal segment configuration

1996-06-12

1997-10-14

Fox, John

Valves and valve actuation

Rotary valves

Seat or interface seal

251309, 251363, F16K 514

Patent

active

056763484

ABSTRACT:
A valve comprising a body having an interior cavity, an inlet port and an outlet port; an upstream seat and a downstream seat positioned within the cavity, each seat including a bore in alignment with the inlet and outlet ports to define a flow passage through the valve body; a closure member movably positioned between the seats to either open or close the flow passage; a seat-to-closure member seal defined between each seat and the closure member, the seat-to-closure member seal defining a first area between the seat-to-closure member seal and the bore of the upstream seat; wherein the upstream seat includes a sealing member between the seat and the valve body which is positioned asymmetrically around the bore; and wherein the sealing member defines a second area between the sealing member and the bore which is larger than the first area.

REFERENCES:
patent: 3061267 (1962-10-01), Hamer
patent: 4017088 (1977-04-01), Lerjen
patent: 4113228 (1978-09-01), Frye

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