Watts TR GRVXCIPS 6 6 6 Part of the TR Series chat hdpe Pro Series Channel Drain End Pro Series Channel Drain End Cap is made of polypropylene (PP) treated with UV inhibitors This 1 2 inch anti sweat valve is used in residential applications for mixing hot water with the cold water supply to temper the water inside the toilet tank to prevent condensation build up on the outside of the tank the unit has a 6 inch CIPS (Cast Iron Pipe Size) coupler for easy connection to the underground supply (AWWA C900 PVC) and (Ductile Iron Pipe) a 6 inch industry standard grooved end connection (AWWA C606) on the building side for easy connection to the overhead fire sprinkler system The fitting passes under the foundation without joints and extends up through the floor