The extended size range series 80DICL ductile iron check valve and series 80S6CL stainless steel check valves are available in 2-inch through 6-inch sizes and in two different models. The model 80DICL ductile iron check valve is fusion epoxy coated, and the 80S6CL has an all 316 stainless steel body construction including internal parts with a VITON® sealing. Both models are also available with an optional NPT threaded male end, model 80MDICL.