Wafer style butterfly valve. Made of ductile iron. PTFE bushing. Buna-N seal and stem seals. Stainless steel top and bottom stems. The number of holes on the valve depends on the body size. Stainless steel disc, ASTM A351, GR. CF-8M. Ductile iron body, ASTM A536. For use between two 150 lbs flanges. Will lock "open" or "closed". Buna-N liner. Rated to 200 psi pressure at ambient temperature (70 degree F). Size: 4".