WATTS® 0111552 2497315

This 4 IN double check detector backflow preventer assembly prevents the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two shutoff valves, and four test cocks. It has a gallons per minute meter. It features a stainless steel housing and sleeve and is 70 percent lighter than traditional designs. It is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. It is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water. The maximum working pressure is 175 psi (12.06 bar).

WATTS® Double Check Detector Backflow Preventer, 757DCDA Series, 4 x 4 in Nominal, Flanged x Flanged Connection, 175 psi, Water Media, 33-3/4 in Inlet to Outlet Length, 22-3/4 in Top to Inlet Center, Stainless Steel Body, Contains Lead, 33 to 140 deg F, Additional Information: OSY Shut-Off Valve

• Stainless steel for corrosion resistance
• Lightweight construction
• 150 pound ANSI/AWWA CL D flanged
• Outside screw and yoke shutoffs

• Specification Sheet Specification Sheet
• Specification Sheet Specification Sheet