Hydraulic Pressure Control Valve Troubleshooting

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Kate, the buyer of Terex company, was asked by the head office last month to purchase a batch of hydraulic pressure valves within 3 months. She vowed to the owner that it would be completed in 2 months. As usual, Kate sent the hydraulic pressure valve inquiry to more than 10 hydraulic valve manufacturers she was familiar with, including American hydraulic valve manufacturers and Chinese hydraulic valve manufacturers. She chose 3 factories to provide hydraulic pressure valve samples for testing. After the test, the technical department informed that only the hydraulic pressure valve samples provided by American manufacturer were qualified. The trouble is that the price of the qualified hydraulic pressure valve exceeds 40% of the company's budget price. She has no authority to decide to use the products of this American hydraulic valve manufacturer. After discussion with the technical department, she learned that those unqualified hydraulic pressure valves are mainly due to the wear or fracture of the sealing ring after 15,000 times of impact during the durability test of the hydraulic pressure valve, resulting in the leakage of the hydraulic pressure valve. Only those hydraulic pressure valves that have not leaked for more than 40,000 times are qualified. She was very depressed that the quotation of the other 3 hydraulic pressure valves was within the budget, but the quality was unqualified. At this time, Kate realized why the company gave him 3 months to purchase. She hurriedly sent inquiry to new hydraulic valve manufacturers, and specially emphasized the need for hydraulic pressure valves with more than 40,000 durability tests. The trouble is that no hydraulic valve manufacturer gave her an offer. Kate realized the difficulty of procurement. She had wasted 3 weeks. Procurement was still in its infancy, and the technicians had been urging progress. After learning about Kate's purchase status, the colleague recommended her to contact AAK HYDRAULIC VALVE to try. When we received the hydraulic pressure valve drawing from Kate, we first gave a quotation. She told us very frankly that the price of AAK was 20% higher than that of other China hydraulic valve manufacturers, but 15% cheaper than that of the United States. She needed us to reduce the price greatly. We suggested providing the hydraulic pressure valve samples for testing first, and then discuss the price after passing the test. 2 weeks later, Kate informed that the test was qualified and AAK hydraulic pressure valve durability test had reached more than 40,000 times. She was surprised why AAK passed the hydraulic pressure valve durability test, while the other hydraulic valve manufacturers in China failed. AAK hydraulic valve was also eliminated by customers 2 years ago because the durability test of hydraulic pressure valve failed to meet the standard.

It took 3 months and 6 proofing adjustments to match the sample quality of hydraulic pressure control valve made in Germany. Finally, AAK passed the parameter test of hydraulic pressure control valve, and our hydraulic pressure control valve was affirmed by Eatonâ??s company. We became Eatonâ??s first supplier for hydraulic pressure control valve in China. In mid October last year, an agent of Eaton came to AAK HYDRAULIC VALVE and brought a sample of Eaton hydraulic pump with a purchase value of more than US$150,000.00, asking us to make a quotation. After we checked the product parameter requirements of the artwork, we declined the quotation because AAK is only good at hydraulic valve products. Compared with its domestic peers, most of the technologies of AAK HYDRAULIC VALVE were in TOP 1-6. We thought Eaton agent would not consider us again. However, after a month, he came again and brought a Vickers Series solenoid valve with a value of up to US$200,000.00. We directly said that we are not good at this kind of products and couldn't quote. Eaton agent saw that we rejected the products that AAK is not good for 2 times, he felt that AAK is different from other hydraulic valve manufacturers, and recognized the professionalism of AAK HYDRAULIC VALVE. For the 3rd time, he brought a sample of pilot hydraulic pressure control valve with very high precision and wanted to test the parameters with our pressure test bench. I realized that Eaton agent actually wanted to test our pressure test bench with his samples. It was the first time for us to encounter such a situation, the purchaser did not test the quality of AAK hydraulic valve, but tested the equipment producing hydraulic valves first. Being satisfied with our pressure test bench, he asked if we were interested in this pilot hydraulic pressure control valve, which was a hydraulic pressure control valve produced in Germany. After learning the parameters of the hydraulic pressure control valve in detail, AAK HYDRAULIC VALVE technical team discussed the artwork of the hydraulic pressure control valve. We were 90% sure to match the quality of this hydraulic pressure control valve produced in Germany. More than 20 days later, we sent the first approval sample of the hydraulic pressure control valve. The sample comments was that there was still a 12% difference between the accuracy of AAK hydraulic pressure control valve and that of German hydraulic pressure control valve. We were required to send the revised sample again. The whole proofing and approving process have been bumpy, the parameters were continuously required to be improved. The samples have been adjusted for 6 times, finally, it met the quality of the German hydraulic pressure control valve after 3 months.

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