A ten-inch round valve box encloses a line flushing valve connected to a PVC exhaust header via a PVC coupling. The assembly sits atop an eight-inch wide bed of one-half to three-quarter inch washed gravel wrapped in geotextile fabric, extending twenty-four inches below the base. Finish grade and bark mulch surround the upper perimeter of the valve box.
24" 8" FINISH GRADE BARK MULCH 10" ROUND VALVE BOX PVC COUPLING LINE FLUSHING VALVE PVC EXHAUST HEADER 1/2" TO 3/4" WASHED GRAVEL UNDER ENTIRE BOX GEO TEXTILE FABRIC 1" = 1" OSD-HM-328413-01 D4
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