Febco LFFRK 850 886V S 4 Part of the RK LF860 LF866 LF870V 876VST LF876V LF880V LF886V Series oscp cast iron ADA pads This 3 inch stainless steel This 3 inch stainless steel reduced pressure zone assembly backflow preventer with SentryPlus Alert technology with automatic shutoff ACV for flood detection and prevention is designed to prevent the reverse flow of contaminated water from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements and the adjustable top allows proper alignment with the finished floor surface All parts are made of high quality materials LF886 Compatible Size Used On 4 IN Kit Type Seat Ring Arm Kit Lead Free YES Product Group KITS UPC 098268510058