Mainly used in 100 ~ 320T Crawler crane fixed or variable pump system, and related similar symbol application in agricultural machinery, road and bridge machinery, sanitation machinery, mining machinery and etc. The multi-way valve is a load-sensitive multi-way valve, and the flow rate is independent of the load. The valve is section structure, which can be expanded according to the needs, max section is 7 working sections; the valve is integrated with an oil return back pressure valve, which adopts a parallel circuit. That can effectively protect the radiator; the flow can be adjusted through the valve spool stroke, and each working section has a pressure compensation function; the working port can be set with a secondary pressure relief valve according to the needs; the control forms include hydraulic control, electro-hydraulic control; Integrated independent single and double pump switching function.