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

1980-11-21

1982-02-02

Weakley, Harold W.

Fluid handling

With repair, tapping, assembly, or disassembly means

With disassembly tool engaging feature

251167, 251196, 251360, F16K 4300

Patent

active

043134580

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: 3110470 (1963-11-01), Dumm
patent: 3610569 (1971-10-01), Reaves
patent: 3746305 (1973-07-01), Zakka
patent: 4116419 (1978-09-01), Diehl
patent: 4124194 (1978-11-01), Alvarez
patent: 4240460 (1980-12-01), Alaniz

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