Vacuum breaker valve

Details Vacuum breaker valve Vacuum breaker valve

1979-01-31

1980-06-24

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137360, F16K 2402

Patent

active

042090334

ABSTRACT:
Sill cock having novel vacuum breaking stem packing assembly to break a vacuum between the shut-off valve and the sill cock. A novel vacuum breaker shut-off valve is also provided adapted to close upon the presence of a vacuum or reduced pressure in the main water line.

REFERENCES:
patent: 2604113 (1952-07-01), Barsano
patent: 2956579 (1960-10-01), Moore et al.
patent: 3106935 (1963-10-01), Gatzke
patent: 3785394 (1974-01-01), Dixon et al.
patent: 3952770 (1976-04-01), Botnick

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