Description
This 4 inch reduced pressure zone assembly backflow preventer helps 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 a traditional designed assembly is approved for horizontal 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 valves, resilient seated gate valves with outside stem and yoke, test cocks, and a corrosive resistant stainless steel bottom mounted pressure relief valve.
Features
- Replaceable check disc rubber
- The maximum working pressure is 175 psi (12.06 bar)
- Patented torsion spring check modules for ease of serviceability
- 304 (Schedule 40) stainless steel housing and sleeve
- Groove couplings for ease of installation and pipe alignment
- Quick access sleeve
- UL and FM outside stem and yoke resilient seated gate valves
- Compact design allows small enclosures to be used
- Bottom mounted cast stainless steel relief valve
