WILKINS DOUBLE CHECK VALVE BACKFLOW PREVENTER 1 IN., LEAD FREE| Suitable for residential commercial industrial irrigation marine and fire protection applications | Prevents the reverse flow of water gases or other substances into the distribution system of the potable water supply | Double check valve assembly complete with two full port valves and four ball valve test cocks | Bronze body construction | Noryl replaceable seats and silicone rubber check discs | Entire unit serviceable in-line | Temp range 33°F to 180°F | Maximum pressure 175 psi | Listed ASSE 1015 AWWA |Compliant for Lead Free legislation