The 1-1/2 in 950XL Double Check Backflow Assembly is utilized in low health hazard, non-potable water applications for protection against both backsiphonage and backpressure of polluted water into the potable water supply. The 950XL is a wye pattern, short lay length Double Check Backflow Preventer and features a maximum working water pressure of 175 psi, hydrostatic test pressure of 350 psi, maximum working water pressure of 180 deg F and threaded end connections. It includes corrosion-resistant stainless steel springs, fasteners and ball valve handles and replaceable Noryl® seats and silicone seal rings for added convenience.