Liquid level control having improved instrument air valve

Details Liquid level control having improved instrument air valve Liquid level control having improved instrument air valve

1984-07-24

1985-10-01

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

137446, 251251, 251263, 251323, F16K 4300, F16K 3118, F16K 3300

Patent

active

045439796

ABSTRACT:
A liquid level control including a housing for attachment to an opening in a vessel, the housing having an inner chamber with a float extending therefrom, the float responding to changes in liquid level within the vessel, and an outer chamber including a valve for opening and closing an air flow passageway to provide a pneumatic signal in response to the liquid level changes. The housing has a rotatable shaft extending through the wall separating the inner and outer chambers. The valve includes an elastomeric seat which is easily accessable for inspection and is easy to replace.

REFERENCES:
patent: 1479028 (1924-01-01), Cooke
patent: 1764991 (1930-06-01), Siebs
patent: 3970099 (1976-07-01), Murphy, Jr. et al.
patent: 4133345 (1979-01-01), Mitchell

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