Watts 757DCDA-OSY-LM 8 - Part of the 757DCDA Series Window Well Cover Waterproofing Interface & Outlet AdaptabilityDesigned

Waterproofing Interface & Outlet AdaptabilityDesigned with built-in interfaces to secure and seal against deck membranes

Corrosion resistant adjusting screw and sealed cage for waterworks pit installations

Cover O-ring Kit Type First or Second Check Kit Lead Free YES Product Group BACKFLOW KITS UPC - 098268699166

3″ invert depth

Watts 757DCDA-OSY-LM 8 - Part of the 757DCDA Series Window Well Cover Waterproofing Interface & Outlet AdaptabilityDesignedThis 8 IN double check detector backflow preventer assembly prevents the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri link check valves, two shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70 percent lighter than traditional designs. It is designed for non health hazard applications