Water saver fire hydrant

Details Water saver fire hydrant Water saver fire hydrant

1998-09-04

2000-05-09

Michalsky, Gerald A.

Fluid handling

Processes

137272, 13763015, 251 92, 251 94, F16K 3500

Patent

active

060589574

ABSTRACT:
Water saver fire hydrants save water by delivering their initial flow from a pilot valve to a collection of holes in the gasket faces of their hose and pumper outlet nozzles. These holes are normally closed off by the gaskets in caps and hoses, and the water that flows from those holes in the absence of those caps or hoses activates a mechanism inside the hydrant that either blocks attempts to obtain full flow from the hydrant or powers a hydraulic motor that closes the hydrant valves.

REFERENCES:
patent: 3650471 (1972-03-01), Sutton
patent: 4716922 (1988-01-01), Camp
patent: 5469724 (1995-11-01), Pollard
patent: 5520210 (1996-05-01), Barton
patent: 5549133 (1996-08-01), Sigelakis
patent: 5588460 (1996-12-01), Meneses
patent: 5596893 (1997-01-01), Stehling et al.
patent: 5622202 (1997-04-01), Etter et al.
AWA Standard for Dry Barrel Fire Hydrants, ANSI/AWWA C502-85, Denver, 1985.
Installation, Field Testing, and Maintenance of Fire Hydrants, AWWA Manual M17, Third Edition, Denver, 1989, pp. 94 and 95.

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