This 2-1/2 in lead-free reduced pressure zone 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. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs. 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 short lay length lightweight stainless steel body, resilient seated outside stem and yoke shutoff valves, test cocks, corrosive-resistant stainless steel bottom mounted relief valve, and a patented cam-check assembly.

• Lead-free
• Outside stem and yoke
• Replaceable seats for economical repair
• Stainless steel body is half the weight of competitive designs reducing installation and shipping costs
• Stainless steel relief valve features a balanced rolling diaphragm to eliminate sliding seals and lower maintenance costs
• Compact construction for smaller enclosures
• Stainless steel construction provides long term corrosion-resistance and maximum strength
• No special tools are required for servicing
• Cam-check assembly provides maximum flow at low pressure drop
• Top mounted test cocks
• Short end-to-end dimensions makes retrofit easy

Standards/Certifications: ASSE 1013, CSA B64.5, ANSI/NSF 61-G, AWWA C551-92 certified, FM approved, cULus listed

• Specification Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS1171_Spec.pdf