Sprinkler control valve

Details Sprinkler control valve Sprinkler control valve

1978-08-18

1980-07-01

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

13762413, 239570, F16K 3104

Patent

active

042101697

ABSTRACT:
A control valve for a water sprinkler has a passage therethrough and a rotary member under the control of a stepping motor or equivalent rotatable to increase and decrease the area of the passage. A sensor detects the output pressure at the valve and at a predetermined pressure reverses the direction of rotation of the stepping motor and rotary member.

REFERENCES:
patent: 1743545 (1930-01-01), Helphringer
patent: 1822645 (1931-09-01), Crane
patent: 1931771 (1933-10-01), Pinkerton
patent: 2621678 (1952-12-01), Snyder
patent: 2720420 (1955-10-01), Seifferle
patent: 3948285 (1976-04-01), Flynn
patent: 4019686 (1977-04-01), Palma

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