... ,cylinder valve WP(Mpa):15 DN(mm):4 Outlet Thread:G5/8 Inlet Thread:GB8335 PZ27.8 HT ValveHigh pressure Tank Valve ... ; Specification:Working Pressure:15MPaDN:4mmMedium: O2,N2,AIR Outlet Thread: G5/8Inlet Thread: PZ27.8,PZ19.2,Din477 W28.8 25E,Din477 ... sure there's no crack or arrrition on the valve screw thread is cracked, worn or damaged. Installation/disassemble of the tank ...