Pressure recovery characteristics exploration of cartridge type sequence valve

Cartridge valve has been widely taken for metallurgical equipments.The paper shows the establishment of mathematical model of cartridge-type sequence valve and the simulation analysis made during the valve inlet pressure recovery under the condition that the load of the valve at outlet lost suddenly.The simulation results prove to be in accordance with the experimental results,which verify the mathematical model.Experiments were carried out to check the influence of the change of parameters such as orifice diameter,spring stiffness and inlet flow rate upon the inlet pressure recovery.