Fluid operable valves

Details Fluid operable valves Fluid operable valves

1978-02-13

1980-04-15

Michalsky, Gerald A.

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

137240, 137613, 13761418, 406126, F16K 31122

Patent

active

041978730

ABSTRACT:
A fluid operable valve suitable for use in high temperature and pressure environments involving the flow of solids material, incorporates a main valve member and a pilot valve member co-operable with separate seats axially spaced apart in association with the inlet of the valve. The arrangement is such that in operation the pilot valve member is sequenced to close against its seat prior to the main valve member which is purged prior to closure by a gas to remove particles of material which might cause ineffective sealing.

REFERENCES:
patent: 646103 (1900-03-01), Faber
patent: 646104 (1900-03-01), Faber
patent: 1369649 (1921-02-01), Gieseler
patent: 1724017 (1929-08-01), Godfrey
patent: 2305724 (1942-12-01), Luetzelschwab
patent: 3133554 (1964-05-01), Joebken
patent: 3429331 (1969-02-01), Prevost
patent: 3570510 (1971-03-01), Tsutsumi

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