External shutoff valve for fire hydrants

Fluid handling – Processes – Cleaning – repairing – or assembling

Patent

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Details

137272, 137296, 251148, F16L 5518, F16K 2700

Patent

active

059244372

ABSTRACT:
A kit for the emergency shutoff of a fire hydrant after the hydrant stem has failed and a cap of the hydrant nozzle has been removed so that a jet of water is escaping from the hydrant. The kit comprises a two-part increaser and a shutoff valve. The two parts of the increaser are brought together from opposing sides of the water jet and fastened to the hydrant nozzle. The increaser has a flange that mates with the flange on the shutoff valve. The bottom of the flange of the valve is bolted to the top of the flange of the increaser until secure but not tight. Then the shutoff valve is dropped so that it rotates into position, momentarily intersecting the jet of water. Once in place, the shutoff valve is tightened and the water shut off by closing the valve.

REFERENCES:
patent: 330377 (1885-11-01), Coffin
patent: 1349062 (1920-08-01), Goldberg
patent: 2400083 (1946-05-01), Fillinger
patent: 2985242 (1961-05-01), Papa
patent: 3811344 (1974-05-01), Hand
patent: 3856129 (1974-12-01), Peterson
patent: 3981482 (1976-09-01), Callahan, Jr. et al.
patent: 4161958 (1979-07-01), Behle
patent: 4748997 (1988-06-01), Ragsdale
patent: 5099565 (1992-03-01), Campbell
patent: 5404899 (1995-04-01), Zabel et al.
patent: 5609179 (1997-03-01), Knapp

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