Trickle flow irrigation valve

Details Trickle flow irrigation valve Trickle flow irrigation valve

1980-09-15

1982-08-17

Reeves, Robert B.

Fluid sprinkling, spraying, and diffusing

Conduit or nozzle attached irrigation-type decelerator

239570, B05B 1500

Patent

active

043445764

ABSTRACT:
An emitter of very small size connects to a water supply tube by a hollow shank which conducts water to an interior chamber in the emitter housing. Between the chamber and an outlet in the housing the water flow is throttled through an elongated channel having both a wide shallow profile and a narrow steep profile. A free floating (within limits) resilient wafer covers the channel. At initial, very low water pressure at start-up, the wafer does not flex into the channel, thereby affording maximum flow to purge the emitter of unwanted dirt particles and the like. At relatively low operating pressure the wafer flexes into the wide shallow portion of the channel, reducing the flow to a predetermined amount, such as one gallon per hour. At relatively high pressure the wafer flexes further, intruding into the narrow steep slot, thereby compensating for the increased pressure and maintaining fluid flow at said predetermined rate. The free-floating wafer affords quick, thorough flushing and avoids build-up of unwanted foreign matter in the emitter.

REFERENCES:
patent: 2554790 (1951-05-01), Miller
patent: 3693888 (1972-09-01), Rondas et al.
patent: 3873031 (1975-03-01), Reeder et al.
patent: 3908694 (1975-09-01), Spears
patent: 3954223 (1976-05-01), Wichman et al.
patent: 4161291 (1979-07-01), Bentley

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