... 4" 4)Certificate: CE,ISO9001:2008 5)pvc ball valve pvc manual ball valveMaterials: PVC-U,PVC-C,PPSizes: 3/8",1/2",3/4 ... and environment-friendlyIt is widely used in chemistry, electron, metallurgy, plastic, electroplate, irrigation, treatment Sewage, engineering of Recycled water, Aquatic ... Culture, civil using Construction.We can make any style plastic products according to clients' samples.