Irrigation line drain valve

Details Irrigation line drain valve Irrigation line drain valve

1991-11-21

1993-03-16

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1375276, 239111, F16K 1503

Patent

active

051935783

ABSTRACT:
The invention is an automatic drain valve for irrigation pipelines. The valve is located at the end of the pipe, and comprises a pivoted, spring lever attached to the outside of the pipe and attached to a valve stem and seat.

REFERENCES:
patent: 1438973 (1922-12-01), Van Der Volgen
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patent: 2647534 (1953-08-01), Freeman
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patent: 2926686 (1960-03-01), Gheen
patent: 2946342 (1960-07-01), Dopplmaier
patent: 3419033 (1968-12-01), Shohan
patent: 3736951 (1973-06-01), Purtell
patent: 5004010 (1991-04-01), Huet

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