DN(mm):3Medium:O2,N2,AirOutlet Thread:CGA Standard Inlet Thread:3/4-14 NPSM Working Pressure (PSI):3000 SafetyDevice(PSI):5000 Type:scuba valveDN(mm):3Medium:O2,N2,AirOutlet Thread:CGA StandardInlet Thread: 3/4-14 NPSMWorking Pressure (PSI):3000SafetyDevice(PSI):5000Material:chrome plated brass