Abstract: The disclosure is directed to a sprinkler head for a center pivot irrigation system capable of operation under high or low water pressure. A plurality of sprinkler heads are employed in the system, each of which includes a housing defining a water outlet and constructed to issue a jet of water therefrom. A spray deflector is carried in overlying relation to the outlet by an external frame secured to the housing in a position to intercept the jet of water and deflect it into a predetermined spray pattern. The spray deflector is movable relative to the outlet between a first position protectively covering the outlet and a second position spaced from the outlet to create the spray pattern, the spray deflector being movable from the first position to and maintained in the second position by the jet of water, and returnable to the first position by gravity.

Abstract: The disclosure is directed to a center pivot irrigation system capable of operation under high or low water pressure and a constant volume sprinkler head therefor, which together provide uniform water distribution over an agricultural field notwithstanding the presence of hills and valleys in the field, pressure fluctuations of the water source, friction losses or the direction or magnitude of the wind. The system employs a plurality of sprinkler heads each of which provides a constant volume of water to the annular area over which it travels. Because the annular areas increase in size and total water requirements with increasing distance from the center pivot, the water delivering capacity of each sprinkler head is chosen as a direct function of its radial distance from the center pivot, thus insuring the same water distribution to all points on the field.

Abstract: The disclosure is directed to a spray head device for use in a center pivot irrigation system which is capable of operation under high or low water pressure. The spray head device includes an enclosed housing adapted for connection to a source of water, and which houses water jet apparatus constructed to issue a jet of water and sized for a predetermined range of volume flow. A frame connected to the housing suspends a diffuser element in a position where it is impinged by the jet of water to disperse the water into a flow pattern of predetermined configuration. A resilient washer is carried by the water jet apparatus to provide a substantially constant volume output. The water jet apparatus and diffuser element are removably and interchangeably carried by the enclosed housing and frame, respectively, whereby the rated volume flow of the spray head device may be varied.

Abstract: The disclosure is directed to a center pivot irrigation system capable of operation under high or low water pressure and a constant volume sprinkler head therefor, which together provide uniform water distribution over an agricultural field notwithstanding the presence of hills and valleys in the field, pressure fluctuations of the water source, friction losses or the direction or magnitude of the wind. The system employs a plurality of sprinkler heads each of which provides a constant volume of water to the annular area over which it travels. Because the annular areas increase in size and total water requirements with increasing distance from the center pivot, the water delivering capacity of each sprinkler head is chosen as a direct function of its radial distance from the center pivot, thus insuring the same water distribution to all points on the field. Each sprinkler head is designed to produce a spray pattern that extends laterally outward with a predetermined directional orientation.

Abstract: The disclosure is directed to a center pivot irrigation system capable of operation under high or low water pressure and a constant volume sprinkler head therefor, which together provide uniform water distribution over an agricultural field notwithstanding the presence of hills and valleys in the field, pressure fluctuations of the water source, friction losses or the direction or magnitude of the wind. The system employs a plurality of sprinkler heads each of which provides a constant volume of water to the annular area over which it travels. Because the annular areas increase in size and total water requirements with increasing distance from the center pivot, the water delivering capacity of each sprinkler head is chosen as a direct function of its radial distance from the center pivot, thus insuring the same water distribution to all points on the field. Each sprinkler head is designed to produce a spray pattern that extends laterally outward with a predetermined directional orientation.

Abstract: The disclosure is directed to a center pivot irrigation system capable of operation under high or low water pressure and a constant volume sprinkler head therefor, which together provide uniform water distribution over an agricultural field notwithstanding the presence of hills and valleys in the field, pressure fluctuations of the water source, friction losses or the direction or magnitude of the wind. The system employs a plurality of sprinkler heads each of which provides a constant volume of water to the annular area over which it travels. Because the annular areas increase in size and total water requirements with increasing distance from the center pivot, the water delivering capacity of each sprinkler head is chosen as a direct function of its radial distance from the center pivot, thus insuring the same water distribution to all points on the field. Each sprinkler head is designed to produce a spray pattern that extends laterally outward with a predetermined directional orientation.