Watts 774-OSY 3 - Part of the 774 Series silt-fence-selector The inlet protection barriers are

The inlet protection barriers are proudly made in the USA

a heel-proof PVC grate secured with vandal-proof stainless-steel screws

Includes test cocks on top ports

The Laboratory Drain (Z624) provides dependable drainage for labs

This 1 inch lead free copper silicon alloy reduced pressure zone backflow preventer assembly is designed to prevent the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements

Watts 774-OSY 3 - Part of the 774 Series silt-fence-selector The inlet protection barriers areThis lead free double check valve assembly backflow preventer, 3 inch, 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