Self-cleaning drip irrigation valve

Details Self-cleaning drip irrigation valve Self-cleaning drip irrigation valve

1975-12-11

1976-12-21

Bell, Jr., Houston S.

Valves and valve actuation

With selective flow regulation

Rotary

138 46, 239542, F16K 510

Patent

active

039984273

ABSTRACT:
A flow control valve for use with fluid under pressure comprising a valve body having a valve chamber and a resilient grid in the valve chamber. The valve body includes a control member mounted for rotation and having an interior surface partially defining the valve chamber. The resilient grid includes a transverse wall and a plurality of grid walls extending generally transverse to the transverse wall. The grid defines a plurality of open-ended pockets opening toward, and being closed by, the interior surface. The resilient grid and the interior surface cooperate to define a restricted fluid passage with the grid walls and the interior surface cooperating to define a series of restrictions in the fluid passage. The grid walls are resiliently flexible so that they deflect in response to upstream fluid pressure increases resulting from clogging of one of the restrictions. This makes the valve self-cleaning.

REFERENCES:
patent: 3430867 (1969-03-01), Rodgers et al.
patent: 3437270 (1969-04-01), Venus, Jr.
patent: 3697002 (1972-10-01), Parkinson
patent: 3780946 (1973-12-01), Smith et al.
patent: 3791587 (1974-02-01), Drori

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