Watts 757DCDA-OSY-LM 4 - Part of the 757DCDA Series ZC100F-2NH UPC - 098268051698

UPC - 098268051698

Dual drainage feature (primary + secondary weepholes) to manage floor-seepage and maintain performance

UPC - 098268558845

a spring-loaded atmospheric vent with O-ring

Watts 757DCDA-OSY-LM 4 - Part of the 757DCDA Series ZC100F-2NH UPC - 098268051698This 4 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