... device, centering machine, machine bracket, machine support, main oil cylinder, floating pressure head, pulling rod, sealing head, lifting machine, water supplying system ... the equipment (1)The testing pressure of the hydraulic pressure machine Diameter (DN)Testing pressure MPa K8≥K9100-3004.05.0350 ... water flow out from the valve. Turn on the high pressure water pump feedwater valve at the same time, ...