8 in. Prier Products Quarter Turn Heavy Duty Residential Diamond Series Wall Hydrant. Prier Products P-164 Diamond Series is a quarter turn, frost-proof, heavy duty, anti-siphon wall hydrant with backflow preventer. The P-164 has a large, soft grip handle for easy operation. Unlike other manufacturer's quarter turn hydrants, Prier's P-164 does not have a ceramic disc that can crack and cause the hydrant to fail. Prier's superior engineering has created a quarter turn hydrant with a simple Bibb seat washer that can be easily replaced if needed. The P-164 is satin nickel plated for a long lasting finish that will not rust or tarnish. The large flange is pitched to drain, has enclosed screw holes and is easy to install. Prier's P-164 is connected to the supply piping in the heated portion of the structure, eliminating the possibility of freezing. Prier Products Diamond Series has a three-year manufacturer's product warranty. Built to last the life of your plumbing system. Material: Brass.