0.2cc/min AAK Hydraulic Needle Valve, with Internal Leakage Accuracy 20% Higher than that of HydraFo

Sal is from Italy. He has been buying hydraulic cartridge valves in China for quite a long time and is very knowledgeable. At the beginning of this year, they developed a new hydraulic press for sheet stretching, which uses hydraulic needle valves. The boss asked Sal to try to purchase hydraulic needle valves in China instead of HydraForce.

4 weeks later, the hydraulic needle valves were installed with the equipment. The engineer found that the hydraulic needle valve was abnormal, and there were leakage traces at the fitting gap between the valve spool and the valve body. After testing the hydraulic needle valve separately, the internal leakage was 0.5cc/min, while the hydraulic needle valve at 0.3cc/min did not have any leakage traces, that is, the hydraulic needle valves from those 2 hydraulic valve manufacturers have unstable internal leakage accuracy.

https://www.aakindustry.com/info-detail/hydraulic-needle-valves-aak329