• 304 (Schedule 40) stainless steel housing and sleeve Replaceable check disc rubber Extremely compact design allows for small enclosures to be used Torsion spring check modules for ease of serviceability Groove couplings for easy installation and pipe alignment 70 Percent lighter than traditional designs Link check modules provide lowest pressure loss Drip tight shutoff valves Bottom mounted stainless steel relief valve

This Maxim(TM) 4 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality 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. This extremely compact and lighter than 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. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance. This assembly consists of a stainless steel body with a quick access sleeve, torsion spring check modules, grooved gear operated butterfly valves with tamper switch, test cocks, and a bottom mounted pressure relief valve.