Watts 4 957-OSY-FP - Part of the 957 Series Sheet Drain cover O-ring

cover O-ring

Heavy-duty 12-¾″ square hinged grate rated for heavy traffic environments

This 1 1/2 inch lead free master tempering valve is designed for use in commercial and institutional applications

Optional finishes are available to match project aesthetics or environmental conditions

This compact modular design with a single access cover for easy maintenance is approved for horizontal and vertical flow up installation

Watts 4 957-OSY-FP - Part of the 957 Series Sheet Drain cover O-ringThis 4 inch reduced pressure zone assembly backflow preventer with SentryPlus Alert technology with automatic shutoff ACV for flood detection and prevention is designed to prevent the reverse flow of contaminated water 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, as well as provide alerts and automatic shutoff capability