This 4 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of 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. It is ideal for protection at cross-connections identified as non-health hazards and from other contaminants found at the service line entrance. This compact modular design with a single access sleeve for easy maintenance is approved for horizontal or vertical installation in accordance with the direction of the flow arrow on the assembly. It consists of a stainless steel body, tri-link check valves, outside stem and yoke resilient seated gate valves, and test cocks.
WATTS®, 0111512, Double Check Valve Assembly, Series: 757, 4 in Nominal, 175 psi Pressure, 33 to 140 deg F, Resilient Seated Gate Valve Ball Valve/Gate Valve, 304 Stainless Steel Body, 33-3/4 in L x 11-3/16 in W Dimensions
- Tri-link check valve are removable and serviceable without the use of any special tool
- Extremely compact design
- 70% lighter than traditional designs
- Groove fittings allow integral pipeline adjustment
- Unmatched easy of serviceability
- Replaceable check disc rubber
- The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight
- Bronze body nickel plated test cocks
- Outside stem and yoke resilient seated gate valves