Vacuum breaker valve and stem packing assembly

Details Vacuum breaker valve and stem packing assembly Vacuum breaker valve and stem packing assembly

1975-12-15

1980-06-10

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137360, 137528, F16K 2402

Patent

active

042067774

ABSTRACT:
Sill cock having novel vacuum breaking stem packing assembly to break vacuum between the shutoff valve and the cock and a vacuum breaker shut off valve to close same upon encountering a vacuum or reduced pressure in the main.

REFERENCES:
patent: 2159056 (1939-05-01), Sloan
patent: 3023767 (1962-03-01), Woodford
patent: 3106935 (1963-10-01), Gatzke
patent: 3286722 (1966-11-01), Royer
patent: 3297046 (1967-01-01), Hall
patent: 3929150 (1975-12-01), Flinner et al.

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