Pulsed irrigation control valve with pressure relief
First Claim
1. An irrigation control valve for an irrigation system having a working fluid supply tube for supplying a pressurized working fluid to the irrigation control valve, said irrigation control valve comprising:
- a control valve body having an accumulation chamber, an inlet passageway for providing fluid communication between the working fluid supply tube and said accumulation chamber and a mist passageway for providing fluid communication between said accumulation chamber and a mist port;
a mist valve assembly interdisposed between said accumulation chamber and said mist passageway and responsive to fluid pressure in said accumulation chamber to control fluid communication between said accumulation chamber and said mist passageway; and
a pressure relief valve assembly in fluid communication with said accumulation chamber and operably coupled to said inlet passageway to relieve pressure in said accumulation chamber in response to pressure in said inlet passageway.
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Accused Products
Abstract
The present invention provides an irrigation control valve for converting water supplied to the irrigation control valve at a constant, low-volume flow rate into a pulsed, high-volume flow rate discharge. The irrigation control valve includes a control valve body having an inlet coupled to the water supply tube, an accumulation chamber, a mist port and a mist valve assembly for intermittently discharging the water from the accumulation chamber out of the mist port. The irrigation control valve further includes a pressure relief valve assembly operably coupled to the water supply tube for relieving the pressure within the accumulation chamber when the irrigation control valve is not in use.
42 Citations
22 Claims
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1. An irrigation control valve for an irrigation system having a working fluid supply tube for supplying a pressurized working fluid to the irrigation control valve, said irrigation control valve comprising:
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a control valve body having an accumulation chamber, an inlet passageway for providing fluid communication between the working fluid supply tube and said accumulation chamber and a mist passageway for providing fluid communication between said accumulation chamber and a mist port; a mist valve assembly interdisposed between said accumulation chamber and said mist passageway and responsive to fluid pressure in said accumulation chamber to control fluid communication between said accumulation chamber and said mist passageway; and a pressure relief valve assembly in fluid communication with said accumulation chamber and operably coupled to said inlet passageway to relieve pressure in said accumulation chamber in response to pressure in said inlet passageway. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An irrigation control valve for intermittently discharging a working fluid supplied to said irrigation control valve from a pressurized source via a working fluid supply tube, said irrigation control valve comprising:
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a control valve body having a accumulation chamber formed therein, an inlet passageway having a first end in fluid communication with the working fluid supply tube and a second end in fluid communication with said accumulation chamber, and a mist passageway having a first end in fluid communication with said accumulation chamber and a second end terminating at a mist port; a mist valve assembly disposed in said accumulation chamber and sealably engageable with said first end of said mist passageway, said mist valve assembly operable to quickly open into an open position by revealing said first end of said mist passageway and establishing fluid communication between said accumulation chamber and said mist passageway when pressure in said accumulation chamber is equal to or greater than a trip pressure, said mist valve assembly further operable to quickly close into a closed position by concealing said first end of said mist passageway and interrupting fluid communication between said accumulation chamber and said mist passageway when pressure in said accumulation chamber is less than a reset pressure. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification