... DN50 and aboveGeneral features and options for customized brass ball valves: 1. Brass body material: CuZn39Pb2, CW617n ... Flow port: standard flow, full flow, reduced flow5. Ball material: brass, stainless steel, PVC6. Sealing: PTFE, ... : BSP/ISO/NPT/NPSM thread; welding, flange8. Threaded body: 5 or 7 threads9. Product certificate: CE ... , Lead Free, DZR10Ball SeatPTFE PN40 BSP Threaded Brass Ball Valve