1)Name:good quality double union ball valve 2)Materials: PVC-U,PVC-C,PP,PP-H ... "~10" 4)Certificate: CE,ISO9001:2008 good quality double union ball valveMaterials: PVC-U,PVC-C,PP,PP-H,PVDFSizes: 3 ... environment-friendlyIt is widely used in chemistry, electron, metallurgy, plastic, electroplate, irrigation, treatment Sewage, engineering of Recycled water, Aquatic Culture, civil ...