| Message: | Logan, a British customer, checked with 10 hydraulic valve manufacturers that he often contacted, none of them can make a hydraulic relief valve with high pressure resistance of 450Bar. Only AAK solved the problem of high pressure resistance with 68HRC material and ensured the performance of 2 million times.
According to the requirements of the engineer, Logan defines the material hardness of the hydraulic relief valve as above 68HRC, which is 10% higher than that of the conventional hydraulic relief valves. After a round of consultation, 8 hydraulic valve manufacturers gave up, and the other 2 old hydraulic relief valve suppliers tried to make samples. 2 weeks later, the hardness of the samples of the 2 hydraulic relief valve suppliers remained at 63-65HRC, which was their maximum capability. Logan had no choice but to look for the manufacturer of hydraulic relief valves again. Logan consulted 20 companies online, and they all said that they were not confident to try 68HRC materials and 450Bar high-pressure hydraulic relief valves. Logan was in a big headache.
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