Watts RK 775/775DCDA-CK1 3-4 - Part of the RK-775/775DCDA Series snake fencing 8-3/8" Diameter Combination Main Roof

8-3/8" Diameter Combination Main Roof and Overflow Drain with Low Silhouette Domes and Double Top-Set® Deck Plate

This kit consists of first and second check module O-rings

This kit consists of the disc assembly

5' x 288'Square Ft Per Roll: 3

Watts RK 775/775DCDA-CK1 3-4 - Part of the RK-775/775DCDA Series snake fencing 8-3/8" Diameter Combination Main RoofThis 3 4 IN first check detector valve replacement kit for series 775 and 775DCDA prevents the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. This kit consists of a first check module, check module O ring and a red silicone disc elastomer. It is designed for non health hazard applications. It is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water.