Watts 774DCDA-DOSY-CFM 4 - Part of the 774DCDA Series Strip Drian sewer or water application

sewer or water application

This 1/2 by 1/2 IN lead free dual check valve backflow preventer helps prevent the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets

60 mil and 80 mil (a mil is a 1

sizes from 4″ × 8″ to 5″ × 17″

Watts 774DCDA-DOSY-CFM 4 - Part of the 774DCDA Series Strip Drian sewer or water applicationThis 4 inch double check 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. It is ideal for protection at cross connections identified as non health hazards such as on fire protection