Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent
1989-02-24
1990-11-06
Cohan, Alan
Fluid handling
Liquid level responsive or maintaining systems
By float controlled valve
251 65, F16K 3300
Patent
active
049677896
ABSTRACT:
The irrigation regulator, 1 and 2, releases water at appropriate intervals of time, which are controlled by the water evaporation rates in an evaporation pan (19). A water level sensor and valve system (7), (14), (9), (15) and (13), release irrigation water from the time the water level in the evaporation pan drops at a certain low level (2), due to evaporation, until is restored to the original high level (1), with the supply of water to the evaporation pan, during irrigation.
In cases when from a water source a number of sectors of an irrigation network have to be supplied with water available at rates which can satisfy one sector at a time, regulators of a number equal to the number of sectors, with double outlet water valves (8), may be interconnected as shown in the FIGS. 3, 4, and 5, so that when the one regulator delivers water for irrigation, the others do not.
REFERENCES:
patent: 3122155 (1964-02-01), Martinon
patent: 3212751 (1965-10-01), Hassa
patent: 3233625 (1966-02-01), Pase
patent: 3527172 (1970-09-01), Krueger
patent: 3980457 (1976-09-01), Smith
patent: 4059227 (1977-11-01), Hunter
patent: 4393890 (1983-07-01), Skappell
patent: 4562855 (1986-01-01), Cummings
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