• Features a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve
• Alert features available with add-on sensor connection kit
• 304 (Schedule 40) stainless steel housing and sleeve
• UL and FM outside stem and yoke resilient seated gate valves
• Replaceable check disc rubber
• Bottom mounted cast stainless steel relief valve
• Compact design allows small enclosures to be used
• Groove couplings for ease of installation and pipe alignment
• The maximum working pressure is 175 psi (12.06 bar)

This 2 1/2 inch reduced pressure zone assembly backflow preventer help stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazard exists. This extremely compact and lighter than a traditional designed assembly is approved for horizontal Z pattern installation as long as the backflow assembly is installed in accordance with the direction of the flow arrow. This assembly consists of a stainless steel body with a quick access sleeve, torsion spring check valves, resilient seated gate valves with outside stem and yoke, test cocks, and a corrosive resistant stainless steel bottom mounted pressure relief valve. This backflow assembly contains a flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. When activated through an add-on sensor connection kit, the flood sensor relays a signal that triggers notification of potential flooding to service personnel. The add-on sensor connection kit is available for building management systems and cellular communication.