... . 1.2Mpa and 1.6Mpa 4. fusion bonded epoxy coated pressure relief gate valve Model: RVCXInterface type: flangeMaterial: iron body and bronze ... operators, such as handwheel, operating nut or cap.Nominal working pressure: 1.0MPa, 1.6MPa, 2.5MPaValve body compression strength: 1 ... .4MPa , 3.75MPaSeal test: 1.1MPa, 1.76MPa, 2.75MPa pressure relief gate valve