AAK Hydraulic Cartridge Needle Valve used a 6 mm chamfer trick to solve Peder's equipment abnormality

China [CN]

Peder is from a hydraulic equipment company in Peru. They mainly focus on logistics transmission hydraulic equipment. At the beginning of this year, customers complained about the unstable control and inaccurate positioning of the lifting hydraulic power unit they sold. The after-sales server judged on site that the problem was caused by the hydraulic cartridge needle valve in the system, but after the manufacturer's inspection, the parameters of the hydraulic cartridge needle valve met the requirements. The engineer asked the original manufacturer to optimize the hydraulic cartridge needle valve, but the manufacturer was unable to do it and gave up. Peder contacted more than 10 hydraulic cartridge valve manufacturers, but none of them had solution, Peder was very anxious. 

Peder found AAK website when searching in Google, and the background showed that he stayed for 9 minutes. He sent an email to ask if AAK has any optimization plan for the unstable control and inaccurate positioning of the equipment during operation caused by the abnormal hydraulic cartridge needle valves? According to the schematic diagram of hydraulic system and production drawings of hydraulic cartridge needle valve provided by Peder, after analysis, AAK engineers found that the original hydraulic cartridge needle valve design had shortcomings, and suggested a solution. Peder saw the hope and asked AAK to optimize the original design and make samples. After 45 days, AAK sent 40 hydraulic cartridge needle valves.

Yesterday, Peder sent an email to inform that after using AAK hydraulic cartridge needle valves, the equipment has been running for more than 6 months. The customer has no complaints about unstable control and inaccurate positioning. AAK engineers only used a 6mm chamfer to remove the hidden danger of the original hydraulic cartridge needle valve. The overall flow coefficient of the hydraulic cartridge needle valve is required to increase with the increase of the opening. The inclination of the flow passage will have an impact on the pressure control of the throttle structure. The chamfering can reduce the generation of eddy currents, which guarantees the stability of the hydraulic cartridge needle valve from the source.

AAK processed a 6mm chamfer at the chamfer position of the flow passage. This small trick reduced the average turbulent kinetic energy by 73%, reduced the pressure drop distributed at the outlet, and ensured the stability of the hydraulic cartridge needle valve. The flow can be adjusted steplessly to move or rise accurately and controllably under load, and the positioning is accurate.

AAK hydraulic cartridge needle valve is stable in control and accurate in positioning. You can also have a small try!

https://www.aakindustry.com/info-detail/needle-valves-aak434