Plumb Pak Air Gap for Standpipes Gray Plastic

Air gap provides full backflow and backsiphonage backflow protection for a variety of applications. It fits in 1-1/2 inch and 2 inch standpipes and the inlet accommodates ½ inch schedule 40 PVC fittings. Designed to allow rubber or metal waste hoses to share a standpipe with the air gap. Can be used with home water filtration units and dehumidifiers.