AAK customized hydraulic counterbalance valve replaced SUN, making Nancy win double the year-end bonus
Nancy comes from a hydraulic equipment company in the United States. In October last year, they developed a hydraulic power unit that used a hydraulic counterbalance valve. Nancy purchased the standard parts of SUN hydraulics counterbalance valve according to the model required by the engineer. During the commissioning of the hydraulic power unit, the oil cylinder shook and made abnormal noise shortly after the equipment was started. After checking the design principle and installation method, the engineer judged that the problem probably lied in the hydraulic counterbalance valve. They asked to replace it with a new hydraulic counterbalance valve, but SUN after-sales personnel said that there would be no problem with the SUN hydraulic counterbalance valve and were unwilling to replace it. The engineer tested the hydraulic counterbalance valve separately, and the parameters were also normal. The technical team was confused. The promotion date of the new equipment was coming, but the machine test was stuck now, and the boss was also very anxious.
Nancy tried to consult with different hydraulic counterbalance valve manufacturers, but after a week, there was no progress. She found AAK on Google and left a message to us: After using SUN hydraulic counterbalance valve, the equipment commissioning was abnormal, but no abnormality was found in the separate test of hydraulic counterbalance valve. At first glance, there seems to be no solution. Our engineer suggested Nancy to provide working condition requirements, hydraulic schematic diagram and equipment abnormal video. After discussion, AAK technical team judged that there was a problem with the flow selection of the hydraulic counterbalance valve. I told her that the flow difference of the cylinder diameter ratio of their power unit was 2.3 : 1. Although this ratio could be used for the standard parts of SUN hydraulic counterbalance valve, its stability was difficult to be guaranteed. This was the reason why the oil cylinder vibrated and made abnormal noise during the test run.
Their engineers also recognized the reasoning of AAK technical team and asked AAK to customize standard two-way hydraulic counterbalance valves with appropriate flow. 45 days later, AAK sent 20 hydraulic counterbalance valves for test order. 2 weeks later, Nancy informed by email that the test run was successful with AAK hydraulic counterbalance valves, and the oil cylinder jitter and abnormal noise were disappeared, which could also catch up with the promotion of the equipment. Purchased a hydraulic counterbalance valve with unsuitable flow, no one in the company could solve the problem. It was solved by using AAK non-standard customized hydraulic counterbalance valves.
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