The Febco 876/876V is double check detector assembly ( DCDA ). It was available in 2 ½” – 10” sizes and was produced from 1993 – 2014. The body was made of ductile iron with a fused epoxy coating. The 876 comes in an “N” shaped pattern while the “V” is for a vertical set up. The 876VST was introduced in 2011 and utilizes stainless steel lead free internal parts. Parts are not interchangeable between the 876 and 876VST. The 876/876V utilized a ¾” 805YB for the bypass assembly.
American Backflow Products Company