1)Name:good quality double union ball valve 2)Materials: PVC-U,PVC-C,PP,PP-H 3)Sizes: 3/8"~10" 4) ... Certificate: CE,ISO9001:2008 good quality double union ball valveMaterials: PVC ... -U,PVC-C,PP,PP-H,PVDFSizes: 3/8",1/2",3 ... products according to clients' samples. good quality double union ball valve