Floating seat structure for gate valves

Details Floating seat structure for gate valves Floating seat structure for gate valves

1977-10-11

1979-01-30

Weakley, Harold W.

Fluid handling

With casing, support, protector or static constructional...

Jacketed

13724622, 251172, 251196, F16L 700

Patent

active

041367103

ABSTRACT:
A floating seat ring for a gate valve structure has an external pressure source to move the seat ring into engagement with the gate valve. A pocket for the seat ring is formed by a counterbore in the valve body and a tubular insert is inserted within the valve body bore extending within the seat ring. This inner end portion of the tubular insert defines with the counterbore the pocket for the seat ring for floating back and forth movement. An external pressure source is in fluid communication with the pocket behind the seat ring to move the seat ring outwardly.

REFERENCES:
patent: 2591038 (1952-04-01), Allen
patent: 2616655 (1952-11-01), Hamer
patent: 3367625 (1968-02-01), Fortune
patent: 3405911 (1968-10-01), Bolling
patent: 3610569 (1971-10-01), Reaves
patent: 3929316 (1975-12-01), Guthrie

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