PRIER 400 Series provides a year round source of water to areas of structures that are subject to freezing temperatures. The hydrant valve is connected to the supply piping in the heated portion of the structure, eliminating the possibility of freezing. The PRIER 400 Series features a half-turn design for years of easy operation. The PRIER 400 Diamond Series has all the characteristics of the proven 300 Series Wall Hydrant, with the added protection of a vacuum breaker and backflow preventor. It is ASSE 1019 and C-UPC approved and available from stock in lengths from 4 to 14 inches.