Advantages of hydraulic valve cartridge in hydraulic systems:
High-power control with low pressure loss and low heat generation is possible.
This happens partly because using two-way cartridge valves reduces the number of pipelines and minimizes losses. Additionally, a single hydraulic valve cartridge unit (logic valve unit) significantly reduces pressure loss compared to conventional valves of the same diameter. It can handle larger flows, surpassing the capabilities of conventional hydraulic valves, which cannot achieve such high flow rates (high power). This flow-through capacity is unimaginable for conventional valves, so cartridge valves are suitable for high-pressure, high-flow, high-power hydraulic systems.
Hydraulic valve cartridge is mainly composed of logic unit (cartridge)
Standardization has now allowed specialized manufacturers to organize mass production. This standardization reduces costs and improves product quality. It also simplifies design choices.
No high-speed commutation shock
This is the most common problem and headache in high-power hydraulic systems. Relying on the compact size of the cone valve structure in the hydraulic valve cartridge, you can achieve a small switching control volume. Unlike sliding valve types with a “positive cover” concept, this design allows for high-speed switching. By implementing measures in the pilot part of the components and adapting to the transition state during switching, you can greatly reduce switching impact.
High switching reliability
General cone valve types are less likely to cause poor action due to dirt. They have a small pressure loss and generate little heat. Additionally, the longer section of the spool-guided part reduces the likelihood of skewed jamming. As a result, these valves provide reliable action.
Cartridge logic valves are standardised nationally and internationally
Because standardization of the cartridge logic valve has occurred both domestically and internationally, the common installation dimensions are specified by international standards such as ISO 7368, Germany’s DIN 24342, and China’s GB 2877 standard. This standardization allows for interchangeability among cartridges from different manufacturers without affecting the valve’s internal structure. It also provides ample room for development in hydraulic valve design.
Cartridge logic valves for easy integration
You can concentrate multiple components in a block body to create a hydraulic logic control system. Compared with systems composed of conventional pressure, direction, and flow valves, this approach can reduce the system weight by 1/3 to 1/4 and improve efficiency by 2% to 4%.
High speed of reaction
As the hydraulic valve cartridge is a seat valve structure, the spool slightly off the seat will begin to open the oil. In contrast, the slide valve structure must go through the cover amount before starting to turn on the oil circuit. The completion of the control chamber pressure relief and opening of the cartridge valve takes only about 10 milliseconds. This results in a fast response speed.
You can change or increase regeneration control simply by changing the pilot valve or replacing the control cover
You can alter and increase regenerative control performance simply by changing the pilot valve or replacing the control cover. By carefully selecting the damping size in the control cover, you can improve control performance and prevent shocks.
Since the cartridge (seat valve type) is pressurised to close, there is no gap leakage as with slide valve type valves
As a result, the application of hydraulic valve cartridges is becoming more widespread. These valves form cartridge hydraulic systems. These systems find widespread use in plastics, iron and steel smelting, casting and forging hydraulic machinery, engineering machinery, transport, and other large-scale hydraulic equipment. Both abroad and at home, the use of cartridge valves in hydraulic equipment has grown significantly. Large-scale hydraulic equipment increasingly uses cartridge valves combined into hydraulic systems. This trend represents one of the main directions in the development of hydraulic technology.
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