Dust trap and valve with auxiliary pressure equalizing valve

Details Dust trap and valve with auxiliary pressure equalizing valve Dust trap and valve with auxiliary pressure equalizing valve

1980-01-15

1982-01-05

Nilson, Robert G.

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

222450, G01F 1126, F16K 120

Patent

active

043088945

ABSTRACT:
A dust trap and valve for bag houses and the like wherein the dust trap valve flap is provided with an auxiliary valve to equalize pressure for easier valve operation while the system is vacuumized. A lost motion drive train permits opening of the auxiliary valve before the flap valve and closing thereof before the flap valve.

REFERENCES:
patent: 760449 (1904-05-01), Guy
patent: 791339 (1905-05-01), Gold
patent: 1618756 (1927-02-01), Gold
patent: 1656393 (1928-01-01), Russell
patent: 1850094 (1932-03-01), Dean
patent: 2665714 (1954-01-01), Greenwood
patent: 2839082 (1958-06-01), Moore
patent: 3257045 (1966-06-01), Carpentier
patent: 3542255 (1970-11-01), Oetiker
patent: 3804124 (1974-04-01), Finke
patent: 4067359 (1978-01-01), Kwast

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