Restricted movement valve seats for an expanding gate valve

Details Restricted movement valve seats for an expanding gate valve Restricted movement valve seats for an expanding gate valve

1979-11-19

1981-01-27

Weakley, Harold W.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

251196, 251328, 251360, F16K 4300

Patent

active

042469287

ABSTRACT:
In an expanding gate valve, tangential pins (70) are received loosely in peripheral grooves (62) of floating valve seats (26) to prevent the seats from moving inwardly far enough to drag against a gate mechanism (32) which is collapsed for movement between open and closed positions of the valve. Alternative arrangements provide retainer rings (122, 130) which engage shoulders (128) of the seats to limit their inward floating movement.

REFERENCES:
patent: 3610569 (1971-10-01), Reaves
patent: 3885771 (1975-05-01), Baumann
patent: 4054153 (1977-10-01), Goyton
patent: 4078763 (1978-03-01), Yamamoto
patent: 4116419 (1978-09-01), Diehl
patent: 4151855 (1979-05-01), Levin

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