Automatic irrigation system control valve assembly

Details Automatic irrigation system control valve assembly Automatic irrigation system control valve assembly

B - Operations, Transporting

05

B

137/34

B05B 12/00 (2006.01)

Patent

CA 1054898

ABSTRACT OF THE DISCLOSURE In one embodiment the main water valve to an irriga- tion system is connected by a fulcrum arm to a float chamber with a float therein operatively connected to the arm. When the water is "on" a controlled feed gradually fills the float chamber which shuts off the water when the float chamber is full. At this point a controlled bleed valve in the bottom of the float chamber gradually emptys the float chamber and turns on the water when the float chamber is emptied thus tim- ing the "on" cycle and the "off" cycle. By closing the control- led feed and fully opening the bleed valve, the water level in the ground can raise and lower the float so that irrigation is by soil moisture content rather than by time. In another embodiment the water in the float chamber raises and lowers air pressure in a sensing tube which acts upon a diaphram which in turn is operatively connected to the fulcrum arm. Once again the actuation can be on a time basis or by the moisture content of the soil.

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