Watts 957ZRPDA-OSY-GPM 4 - Part of the 957RPDA Series ZA100F-4NH ) grates are required to

) grates are required to cover one BG-FILCOTEN 100 4 in

Heavy duty design

- Mesh Diameter: 5

helping maintain clear flow and reduce maintenance

Watts 957ZRPDA-OSY-GPM 4 - Part of the 957RPDA Series ZA100F-4NH ) grates are required toThis 4 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and 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. Extremely compact and lighter than traditional designs it is approved for horizontal Z pattern installation.