First, during the operation of the cartridge hydraulic valve, the small reset spring force allows the oil pressure in the A, B, and X chambers to primarily determine the valve state. Meanwhile, the system or load determines Pa and Pb. If external control is used, meaning control oil comes from other oil sources outside the working system, Px is controllable. If internal control is used, where control oil is from the working system itself, Px will also be affected by the load pressure.
Therefore, changes in load pressure and the effects of various shock pressures will inevitably interfere with the internally controlled control pressure. Therefore, when designing a cartridge valve system, one must carefully calculate the pressure changes in each pathway. It is also essential to clearly understand these changes throughout the entire cycle. It’s crucial to analyze the shock pressure interference during the action conversion process, especially in the internal control mode. You need to pay attention to the use of shuttle valves and check valves. Otherwise, it will cause uniform misoperation or lead to the entire system malfunctioning.
2-way cartridge valves
Second, we should focus on the area ratio, opening pressure, opening speed, and sealing when the valve is in operation.
Third, because the cartridge valve circuit combines independent control fluid resistances, their action consistency may not be as reliable as traditional hydraulic valves. For this reason, you should design the pilot oil circuit reasonably. Implement technical measures such as using shuttle valves and check valves. These measures help avoid instantaneous road passes that could lead to system malfunctions or even paralysis.
Fourth, we also refer to the valve block as an integrated block or channel block. It serves as the basic valve body. You use this block to install cartridge components, control covers, and external channel connections. In the valve block, there are insertion holes for cartridge elements. It also includes main oil line orifices and control oil line orifices. Additionally, the valve block features mounting planes for the control cover plate, external pipelines, and the valve block itself. The installation and connection dimensions and requirements of the two-way cartridge valve should be in accordance with national standards. You can select the valve block from standard parts offered by cartridge valve manufacturers or design it according to your specific needs.
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