Dual-function valve

Details Dual-function valve Dual-function valve

1976-11-01

1978-12-26

Blunk, Evon C.

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

On-off only

1375125, 13761421, 239570, B05B 130, F16K 1704

Patent

active

041312350

ABSTRACT:
A dual-function valve assembly for an irrigation system typically having a plurality of sprinkler heads disposed at different elevations downstream from a control valve. A spring-loaded check valve prevents drainage of the sprinkler lines through the lower heads when the control valve is closed. A second valve in the assembly closes to prevent excessive flow if a sprinkler head is damaged or removed. The valve assembly is especially useful in unattended, automatically actuated irrigation systems.

REFERENCES:
patent: 693133 (1902-02-01), Hennebohle
patent: 1057288 (1913-03-01), Short
patent: 2498482 (1950-02-01), Cadman et al.
patent: 3948285 (1976-04-01), Flynn

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