Symbol and detailed description of hydraulic cartridge valve?

Shuttle valve oil can be delivered to both ends of the valve. If the oil inlet pressure on one side is high, push the steel ball in the middle to the other side, seal the opposite pipeline, and then drain the oil from the pipeline below.

It is mainly used to choose between two oil circuits to ensure that the lower oil circuit can always get high-pressure oil, which is often used as the oil source of pilot control signals.

Extended data:

Cartridge valves have been widely used in various construction machinery, material handling machinery and agricultural machinery. In the industrial field that is often neglected, the application of cartridge valve is expanding. Especially in many occasions with limited weight and space, traditional industrial hydraulic valves are helpless, while cartridge valves show their talents. In some applications, cartridge valves are the only choice to improve productivity and competitiveness.

The function of the new cartridge valve is constantly being developed. These new development achievements will ensure the sustainable production benefits in the future. Past experience has proved that lack of imagination is the only limit to realize direct benefits of production through the use of cartridge valves.

In the working state of cartridge valve unit, the pressures of ports A, B and X are pA, pB and px respectively, and the action areas are AA, AB and Ax respectively. The return spring force at the upper end of the valve core is Ft. When pxAx+Ft > pAAA+pBAB, the valve port is closed; When pxAx+Ft ≤ pAAA+ pBAB, the valve port opens.

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