... ,oxygen valve,cylinder valve WP(Mpa):15 DN(mm):4 Outlet Thread:G5/8 Inlet Thread:GB8335 PZ27.8 HT ValveHigh ... -sale service; Specification:Working Pressure:15MPaDN:4mmMedium: O2,N2,AIR Outlet Thread: G5/8Inlet Thread: PZ27.8,PZ19.2,Din477 W28 ... diver to avoid any risk of injury or death. QF-2C valve