2 DERINGER 20 BF (DC) W/FITTINGS

This 2 inch Ames Deringer(TM) 20 Double Check Valve Assembly is designed to prevent non-health hazard pollutants from entering the potable water supply system caused by backflow due to backpressure and/or backsiphonage conditions. Deringer 20 features integral Eccentric-Seal(TM) butterfly shutoff valves for a short lay length, integrated tamper switches, and Dual-Action(TM) checks for high performance at low-and high-flow rates. This valve comes with kit to adapt valve from 2 inch to 2-1/2 inch size. The kit includes two 2-1/2 inch grooved couplings and two 2 inch NPT x 2-1/2 inch groove adapters. End connections are union type stainless steel 2 inch female NPT threads for ease of installation. It may be installed under continuous pressure service to protect against both backpressure and backsiphonage. Maximum working pressure is 175psi (12 bar).