Frost-proof fire hydrant

Details Frost-proof fire hydrant Frost-proof fire hydrant

1979-04-30

1981-08-18

Schwadron, Martin P.

Fluid handling

Hydrant type

With casing

251 96, 251113, E03B 902, F16K 3502

Patent

active

042840996

ABSTRACT:
A frost-proof fire hydrant of the type wherein the valve is biased to its closed position by the fluid pressure in the shoe. The fire hydrant includes improved means disposed in the bonnet and cooperating with the valve stem for maintaining the valve in the closed position in the event of decreased water pressure in the shoe.

REFERENCES:
patent: 618631 (1899-01-01), Winters
patent: 633228 (1899-09-01), Cholodowsky
patent: 832178 (1906-10-01), Weinland
patent: 1500587 (1924-07-01), Larson
patent: 2512320 (1950-06-01), Fischer
patent: 3532108 (1970-10-01), Sullivan
patent: 3532109 (1970-10-01), Smith

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