... 3.DIN,SMS,ISO,IDF,AS,BS,BPE Standard.Sanitary union (ISO9001:2000,CE,TUV certified) Specification: DN15-DN150 ... ball valve,check valve,diaphragm valve,safety valve,union parts,ferrule,end cap,nut,clamp,elbow,tee ... manufactory from China,specializes in producing kinds of sanitary valves,pipe fittings as well as OEM services ... welding machine and so on. Stainless steel sanitary union sanitary pipe fittings