Watts 7018131 First Check Repair Kit, 6" Backflow Preventer with Red Silicone Disc

This 6 INfirst check repair kit for series 757 and 757DCDA helps to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. It features a first check module, check module O-ring and red silicone disc elastomer. It is designed for non-health hazard applications.

• Fits Popular Models: RK 757/757DCDA-CK1 6
• Repair Kit Used On: Series 757/757DCDA Double Check Valve and Detector Assembly
• Safety Data Sheet: SDS