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AAK Optimized the Hydraulic Direct Acting Cartridge Relief Valve with 3 tricks, Gaylord gave up the original Indian manufacturer

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Update time : 2022-12-24 17:53:06

Gaylord comes from Holland and is an old customer of AAK hydraulic valve. Some time ago, he emailed me to ask if AAK could optimize a hydraulic direct acting cartridge relief valve. After communication, I learned that at the beginning of the year, they had an order for a hydraulic power unit for high-precision machine tools, which used a hydraulic direct acting cartridge relief valve. Gaylord chose an Indian hydraulic cartridge valve manufacturer to make samples, and the equipment debugging was not smooth. The hydraulic direct acting cartridge relief valve had unstable overflow liquid, forming a jet, especially under low pressure, the stability of the system was poor. Although the function test of the valve was normal, it was still necessary to optimize the hydraulic direct acting cartridge relief valve, but 2 weeks later, the original manufacturer still had no solution, and Gaylord contacted me.

 

According to his hydraulic system schematic diagram and the drawing of the original hydraulic direct acting cartridge relief valve, AAK engineers found the hidden danger of the original structure. Gaylord sent the PO of the test order. After 50 days, AAK sent 10 samples of hydraulic direct acting cartridge relief valves.

 

A month later, Gaylord sent us an email. The equipment was adjusted smoothly. Under low pressure, the system was stable. The customer was also satisfied with the prototype. His engineers also admired the brains of AAK technical team. AAK hydraulic direct acting cartridge relief valve has good stability under low pressure conditions. The key lies in its unique structure:

 

1. The valve spool, spring, plunger and pressure regulating knob are successively installed in the cavity of the hydraulic cartridge relief valve body. The valve spool contacts the valve seat under the elastic force of the spring, and relies on the elastic force of the spring and the back pressure of the overflow port to balance the hydraulic pressure generated by the oil inlet.

 

2. The original poppet valve spool is changed into an integral ball type valve spool, and an annular gasket is set between the ball valve spool and the spring. The ball valve spool can automatically adjust the axial angle relative to the centering bearing, which improves the stability of the valve and ensures the low pressure stability of the hydraulic system.

 

3. Before assembly, the standard steel ball is used to punch the runner port and gasket port that contact the steel ball. The original wire seal is changed to ring seal to improve the sealing performance, so as to ensure the reliable contact between the gasket and the steel ball and realize the stable overflow function.

 

AAK hydraulic direct acting cartridge relief valve, is also stable in low pressure, you can also try a small order!

 

AAK HYDRAULIC CARTRIDGE VALVES (450) 2022-12-24

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