Wilkins 1/2 in. - 1 in. Air Gap Fitting Compatible with Model 375/375XL

The AG-10 Air Gap Fitting is used for indoor installations of all 8 in. - 10 in. Model 475V Reduced Pressure Principle Backflow Preventers for the connection of a drain pipe to the backflow preventer, directing nuisance water discharge to a safe drain. It has iron inlet with elbow and 4 in. NPT outlet connections. The AG Air Gap Fitting can be mounted to the body of any drain line made of any standard piping material. The AG prevents a cross connection between the drain and potable water supply. Materials include an epoxy-painted cast grey iron elbow and zinc-plated steel bolts for long-lasting effectiveness.