Abstract: At present, the super high-pressure in the large types of hydro presses is made by the transmission of the pressurized at home and abroad, which has many shortcomings such as complex structure, discontinuous work and slow speed etc. Toward above the problems, we designed and developed a new types of the cartridge-direction valve with the super high-pressure and the great flow; made the Decrials analysis and experimental study is its structure and property and applied the valve in the hydro-system the effects of which are better. We also made the analysis of the kinetic character of the value, the results of which are the same as theses of the experiment.

Key words: 动态特性, 仿真计算, 换向阀