Prior to hydro test, check torque values again and bring them up to the torque value shown in the Bolting Specification table.
在进行水压测试之前，要再次检查扭矩值，确保扭矩达到螺栓规格表上显示的扭矩值。
2
This paper derives the characteristic formula of control pressure in hydro-control check valve and the mechanical characteristics formula of inlet and return circuit.