The 1-½” Double Check Valve Backflow Preventer is engineered to safeguard potable water supplies from contamination caused by backpressure in low-hazard applications. This reliable backflow preventer features two independent check valves, providing continuous protection even if one valve fails. Built with a durable bronze body, stainless steel internals, and NSF/ANSI 372 lead-free certification, it delivers safety and longevity in demanding commercial and residential installations.