Watts 774-NRS 3 - Part of the 774 Series Pipe Connection Fitting Built-in gravel stop to maintain

Built-in gravel stop to maintain drainage performance

The pressure relief is set at 44 psi ( 303

The unit is engineered for durability

This product conforms to the shape of the curb and offers regulatory compliance performance

Watts 774-NRS 3 - Part of the 774 Series Pipe Connection Fitting Built-in gravel stop to maintainThis 3 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated 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 hazard applications and from other contaminants