An underground irrigation valve box assembly houses a PVC true union ball valve, remote control valve, filter, and pressure regulator connected to mainline piping. The assembly connects to a schedule 80 riser via a solvent-weld tee with a two-inch nipple at the mainline, resting on a wire cloth gopher screen and concrete block caps. The outlet pipe extends from the valve with a minimum length of twenty-four inches to the first fitting, sloping downward at forty-five degrees to match lateral pipe depth. The valve box is set two inches above grade at shrubs or flush at turf, providing three inches minimum clearance above internal components. Controller wire features thirty inches of linear coil length with a plastic identification tag and waterproof connectors.
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