Febco 856STDCDA DOSY GPM 6 Part of the 856ST Series inlet protection finder ZB400N 3IG ZB400N 3IG This kit consists of the disc assembly This 6 inch MasterSeries® double check detector backflow preventer assembly prevents the backflow of pollutants due to backsiphonage and or backpressure that are objectionable but not toxic 50 Minimum Temperature Fahrenheit 33 Outlet Connection Size 6 IN Outlet Connection Type Flanged Joint Outlet Shutoff Valve Type Outside Stem And Yoke Gate Valve Part Number 0683092 Polymer Coating No Pressure Operation Does Not Apply To Product Protection Type Backpressure and Backsiphonage Seat Material Stainless Steel Series 856ST Strainer No Technologies Does Not Apply To Product Tradename None ES F 856ST