... water valve 2.size :1/2 to 4 3.colors: white ,grey,blue 4.standards:BS,ANSI,DIN SIZE 1/2β TO 4β ... type screw ,threadStructure type trunnion ball valveJINGHANG pvc water valve1) diameter: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2 ... No vibration and no noise 4)Quality : Heat ,durableApplication: Applies to swimming pool ,wastewater treatment ,agriculture ,irrigation, industrial application hot upvc ball valve