Watts Series 957 Reduced Pressure Zone Assembly

Series 957, 957N, 957Z Reduced Pressure Zone Assemblies provide protection to the potable water system from contamination in accordance with national plumbing codes. Series 957, 957N, 957Z are normally used in health hazard applications for protection against back siphonage or back pressure.

This 0112069 3 inch lead free stainless steel reduced pressure zone assembly has NRS groove by groove gate valves that work well in limited headroom situations. Ideally suited for referenced cross-connections identified as health hazard continuous pressure applications, it prevents the backflow of contaminated water into the potable water supply and protects against backsiphonage and backpressure. The easy maintenance assembly consists of positive seated torsion spring check modules, bottom mounted differential pressure relief valve, non-rising stem resilient seated gate valves and top mounted test cocks. The temperature range is 33 to 140 degrees F (0.5 to 60 degrees C). The maximum working pressure is 175 psi (12.1 bar).

Features:

• 2 1/2", 3" and 4" (65, 80 and 100mm) sizes available with quarter-turn ball valve shutoffs
• Replaceable check disc rubber
• Extremely compact design
• 70% Lighter than traditional designs
• 304 (Schedule 40) stainless steel housing & sleeve
• Groove fittings allow integral pipeline adjustment
• Patented torsion spring checks provide lowest pressure loss
• Unmatched ease of serviceability
• Bottom mounted cast stainless steel relief valve
• Available with grooved butterfly valve shutoffs