Hydraulic Needle Valves

For the valve hole accuracy 1 m hydraulic needle valve, although AAK is 20% more expensive, its service life is twice that of its peers At the beginning of this year, Samuel asked by email about the production time of 1,000 hydraulic needle valves, He specially emphasized that the technical parameters of the hydraulic needle valves need to be the same as those samples made before, especially the valve hole accuracy must be 100% within 1 m or less. Samuel has been cooperating with AAK for 3 years. It is the first time that he deliberately emphasized as such in email. After communication, I learned that the hydraulic needle valves that AAK made samples for last time was 20% higher than that of other hydraulic valve manufacturers, so he placed the order with another manufacturer. However, now this batch of hydraulic needle valves have been complained by customers that the hydraulic winch is stuck. The root cause is that the accuracy of the hydraulic needle valve holes is uneven, and some are less than 1 m, and some higher than 1 m. After the original hydraulic needle valves were replaced by the manufacturer, complaints still continued. The boss was very dissatisfied with Samuel's purchase this time and asked him to source another hydraulic needle valve supplier. Samuel can only get back to AAK, because the sample accuracy of AAK hydraulic needle valve hole was 1 m or less. I told Samuel that the shipment of AAK hydraulic needle valves has never been lower than the sample standard. The next day, Samuel sent us the PO of 1,000 hydraulic needle valves. After 45 days, AAK delivered 1,000 hydraulic needle valves. Last week, Samuel sent an email saying that AAK hydraulic needle valves had been installed on the equipment for more than half a year, and no complaint was received. His boss would rather spend 20% more cost and must purchase the hydraulic needle valves with valve hole accuracy 1 m for 100%. I told him that even if AAK hydraulic needle valve is used properly in another year, it will not get stuck. Samuel was surprised at how AAK ensured 100% accuracy of the hydraulic needle valve hole within 1 m? For the control of the manufacturing quality of hydraulic needle valves, AAK's 3 characteristics lead the majority of hydraulic valve manufacturers. 1. On the processing equipment, the valve hole is finished with the TAMIX one-time tool walking high-speed ultra precision honing mill imported from Japan, which is thoroughly ground without traces. In mass production, the wear-resistant SPA tool effectively ensures the stability of processing, and the valve hole accuracy is guaranteed to be 0.8-1.0 m and the surface roughness reaches Ra0.2-0.3. 2. In the processing process, AAK has more than 10 years of experienced technicians with special machines and special personnel, who have engraved the dimensional accuracy of each element in their minds.

Dimon is a new buyer of a hydraulic equipment manufacturing company in the United States. In the second half of last year, he purchased 100 hydraulic needle valves from an old supplier. After receiving the goods, the hydraulic needle valves were installed on the equipment. A few months later, some users complained that the pressure supply of some equipment was insufficient. Their technicians judged that the radial jamming of the valve spool of the hydraulic needle valve resulted in no flow regulation, which would lead to the failure of the power unit. The hydraulic needle valves need to be replaced with new ones as soon as possible to eliminate user complaints. His boss is not very satisfied that problem happened on even such a small number purchasing of hydraulic needle valves. Dimon is confused why the hydraulic needle valve supplier who had cooperated for 2 years would have such quality problems. He sent some problematic hydraulic needle valves back to the factory. The manufacturer replied that the accuracy of these hydraulic needle valves met the standard, but a small deviation in the size of the valve spool was caused by the deviation of the assembler. At that time, several valves were assembled at the same time in the assembly workshop, and a few deviations were difficult to avoid. Dimon realized that even the original manufacturer replaced the hydraulic needle valves with new ones, it still can not solve the problem of the radial jamming of the valve spool for 100%. He was afraid that if there were more user complaints, could he keep his job during the probation period? Dimon decided to find a new supplier of hydraulic needle valves. He left a message on our website: Can you solve the problem of radial jamming of the valve spool of hydraulic needle valve? At first, it was hard to answer this question. After several rounds of communication, we learned the story of his purchase of these 100 hydraulic needle valves. After reviewing the working conditions and drawings of hydraulic needle valve from Dimon, as well as the pictures of hydraulic needle valves from the original supplier, AAK suggested him trying samples directly. 20 days later, AAK sent 10 samples of hydraulic needle valves made per his requirements. Two months later, Dimon sent an email to us saying that he selected 5 factories from more than 20 hydraulic needle valve manufacturers to make samples. Only the samples from AAK and another factory did not have the problem of radial jamming of valve spool during the test. Their engineers suggested that AAK should be selected to replace the 100 hydraulic needle valves with potential quality problems, because the parameters of AAK hydraulic needle valve are the most stable. The boss knew that he dared to develop new suppliers and solved the hidden quality problems, although the probation period is not over yet, Dimon was approved to become a regular in advance. He told us this story privately.

American hydraulic needle valve can not solve the problem of oil temperature rise, and AAK solved it at one time by changing the throttle area Levi is from a Canadian hydraulic equipment manufacturing company. He has purchased hydraulic needle valves from AAK for several years. We often have some discussion about hydraulic valves. In the second half of last year, they wanted to launch a new high-frequency four column hydraulic press, but the test was not successful. The hydraulic oil temperature is too high, resulting in unstable equipment running speed. Their engineers checked each circuit and found no problems. No abnormality was found in each hydraulic component, including the hydraulic needle valve. Levi contacted the original hydraulic component suppliers and did not receive any positive suggestions. A week passed without any progress, and the boss was worried. Levi thought of AAK. Although this batch of hydraulic needle valves was purchased from American manufacturer due to time constraint, some problems of the hydraulic needle valves in previous times were solved by AAK. AAK engineers found out the problem 1 day later according to the system schematic diagram, commissioning video and drawings of core hydraulic components provided by Levi. The probable reason is that the hydraulic needle valve has a problem. Levi doesn't believe it, because the hydraulic needle valves come from an American factory, they also tested the hydraulic needle valves separately, and there is no abnormality. AAK can redesign the hydraulic needle valve and send samples within 3 weeks. If AAK hydraulic needle valve can not solve the running speed problem of the equipment, we will return the trial order fee. Levi thinks there is no risk. Maybe this is also hope. 3 weeks later, we sent out the trial order of 10 hydraulic needle valves. Their engineers replaced the original hydraulic needle valves, and the four column hydraulic press was continuously tested for 48h. Although the oil temperature was also high, the speed of equipment operation was stable and the equipment operated normally. Levi was surprised that AAK newly designed hydraulic needle valve was more awesome than their American manufacturer. Their engineers admired AAK for finding and solving problems. Our customer in Belarus encountered similar problems last year, so our engineers quickly found the problem. The use frequency of this four column hydraulic press is twice as high as that of the normal one. The equipment works at high frequency for a short time, resulting in an increase in oil temperature and a decrease in oil viscosity. In this way, the flow of oil through the small hole of the hydraulic needle valve increases, which leads to a change in the originally set working speed and leads to the instability of the equipment. If the flow area of the orifice of the hydraulic needle valve is changed, the running speed of the equipment can be controlled by reducing the flow.

For high pressure hydraulic needle valves that can benchmark Germany HAWE, AAK is the only manufacturer in Ningbo This morning, I received the order of 2,000 hydraulic needle valves from Charlotte. At first, I thought she sent the email by mistake, because Charlotte had no cooperation with AAK, we just discussed the inquiry for her hydraulic needle valve with pressure resistance of 450bar for 3 times. It is the first time I met a hydraulic valve customer who placed a big order after 3 times of communication. I asked her directly why she gave AAK such a large quantity of hydraulic needle valves order in only the first cooperation. Charlotte said that this hydraulic needle valve was purchased from HAWE in Germany 3 years ago, because HAWE is the best manufacturer of high-pressure hydraulic valves in the world. Charlotte is from a hydraulic equipment company in Spain. Last month, their company tried to purchase this high-pressure hydraulic needle valve from Ningbo, which is the hometown of hydraulic valves in China. She has a hydraulic valve supplier who has cooperated for 5 years and has high mutual trust. Due to the special requirements and urgent delivery date of this hydraulic needle valve, the original hydraulic valve supplier was unable to bear it, so he suggested Charlotte contact AAK, and joked that if AAK could not complete this hydraulic needle valve, she should not waste more time in Ningbo, but go back to HAWE to purchase the high-pressure hydraulic needle valves. I received the drawings and working condition requirements from Charlotte. This customized hydraulic needle valve is applied to aviation equipment. The working condition pressure is required to reach 450bar. It is required to be delivered within 50 days. The quality needs to be comparable to that of HAWE in Germany. Just like Ningbo counterpart said, in Ningbo, there may not be a second manufacturer who is able to produce this high-pressure hydraulic needle valve except AAK hydraulic valve. Charlotte was curious about why the Ningbo counterparts recognized AAK high-pressure hydraulic needle valves so much, and AAK was also so confident in its own high-pressure hydraulic valves. What is the strength of AAK high-pressure hydraulic needle valves? Like horse racing, if you want to win the gold medal, then a good horse should be equipped with a good saddle and a good rider. What are the good horses, saddles and riders of AAK? If you need to meet the following 3 points at the same time, you may not be able to find a second hydraulic valve manufacturer in Ningbo to produce high-pressure hydraulic needle valves, except AAK hydraulic valve. 1. Good horses: AAK has high-precision machine tools imported from Switzerland, Mikron GF high-precision CNC machining center and GILDEMEISTER turn milling composite machining center. 2.

The email from Draper this morning made me in a good mood all day. I had two bowls of rice at noon. He said that 5 months have passed since AAK supplied the hydraulic needle valves in September last year, they have not received any complaints from users. His owner finally accepted his suggestion: "AAK is the preferred supplier for hydraulic needle valves, even if the price is 20% more expensive". Draper, whom we met in 2019, is a purchasing veteran of Doedijns company in the Netherlands. In 2019, he purchased 3 small batches of hydraulic needle valves from AAK in 3 times. He was very satisfied with the quality and service of AAK hydraulic valves, but in the recent two years of 2020 and 2021, he basically just placed orders for the very difficult and small quantity of hydraulic valves. Draper told the truth privately that he couldn't persuade the owner to place a big order with AAK. The problem is the price. Sometimes the price of AAK hydraulic valves is 20% higher than that of other manufacturers. Only the orders that are out of the capacity other hydraulic valve manufacturers will be placed with AAK. Last July, Draper sent us an email with the subject of "the production time of 1200 hydraulic needle valves". Because he had never sent an inquiry for such a big quantity of hydraulic needle valves, I thought that he sent the email to us by mistake. After communication, it was learned that he finally persuaded the owner to place big order with AAK even if the hydraulic needle valve is 20% more expensive, because they don't want to waste time on the after-sales for the hydraulic needle valves. In the past 2 years, customers have complained more and more about the hydraulic needle valves purchased by Draper. The complaints are basically about some small details of the hydraulic needle valves. For example, the hidden burr of the hydraulic needle valves in the hydraulic power system is not completely cleaned, which affects the matching accuracy and assembly of various parts in the system, as well as the tightness of the matching interface, resulting in internal leakage. Some hydraulic needle valves are complained by users after being used for even only 3 months. For many times, they needed to replace the hydraulic needle valves for users with new ones, which wasted too much of time due to after-sales and also interrupted the construction progress of users. The 1200 hydraulic needle valves purchased from AAK this time are the repeat order for their old customer. The customer said that they will not accept the repair of hydraulic power equipment within 6 months for any reason. Draper once again suggested the owner purchase the hydraulic needle valves from AAK, because in the past 3 years, there has never been any abnormal quality of any hydraulic valves purchased from AAK within 12 months.

The hydraulic needle valves produced by AAK has no leakage and its stability exceeds that of most of its hydraulic valve peers, enabling a foreign trade company in Guangdong to save a major global top 500 customer. The key is that AAK adopts high-precision processing equipment imported from Switzerland to produce hydraulic needle valves. At present, there are less than 5 hydraulic valve manufacturers with such high configuration in the hometown of hydraulic valves in Ningbo. Most hydraulic valve manufacturers use CNC lathe to produce hydraulic needle valves. The hydraulic needle valves made by CNC lathe has high technical requirements for operators and is prone to human errors, such as the valve spool deviates from the central axis. Because of human error, the hydraulic needle valve leaks, and it is not easy to judge which part has the problem. At the end of last year, Mr. Wang, the general manager of a hydraulic valve export company in Shanghai, received complaints from major customers about the several batches of hydraulic needle valves, which made them in a mess. Under the introduction of friends, he came to our company and brought those hydraulic needle valve samples with problems. After inspection, it is found that the main line of the hydraulic needle valve is offset, and the valve spool deviates from the central axis. I told him that this problem is easy to solve and also easy to cause problems. Only with a better CNC lathe can it be guaranteed. We provided him the test data of AAK hydraulic needle valves for comparison, and also asked him to take several hydraulic needle valve samples at random and send them to his customer to compare with the domestic peers. More than half a year later, there was still no reply from Mr. Wang. I didn't know how difficult it was for a top 500 enterprise to place a new order until I had a telephone communication with Manager Wang for more than 30 minutes last week. After Mr. Wang went back last time, he wanted to send the samples of AAK hydraulic needle valves to the major foreign customer, a global top 500 enterprises. At first, the customer refused until their overseas colleagues came to visit with the samples of the hydraulic needle valve to test the samples together on site. After the test, the customer was very satisfied with the quality of the hydraulic needle valve samples, which not only had good surface gloss, high precision, but also had strong sealing performance. Customer is willing to place a trial order first. As long as the quality of the mass production is the same as the samples brought, they can continue to purchase all kinds of hydraulic valves from their company. Mr. Wang asked us to work together to keep this global top 500 customer.

The Hydraulic Cartridge Needle valve that HydraForce can't make, AAK has done it in 30 days Rogelio is from Spain and we met 1 year ago. He sent inquiries about hydraulic cartridge valves to AAK for several times. Some time ago, he came to me and asked for help to make a batch of hydraulic cartridge needle valves. The hydraulic cartridge needle valve used on the hydraulic cold drawing machine they sold to Vietnam has expired the warranty period and needs to be replaced. This hydraulic cartridge needle valve is purchased from HydraForce, and it is not a standard part. HydraForce said that this valve was produced 2 years ago, it is out of stock now and will take 3-4 months to produce it. But the customer was not satisfied with this time frame and complained to his boss. In order to catch time, Rogelio contacted more than 10 Chinese manufacturers of hydraulic cartridge needle valves. They either could not benchmark with HydraForce, or they could not meet the time, so Rogelio was anxious. Rogelio remembered that AAK had supplied HydraForce for 9 consecutive years. He believed that I can help him. According to the hydraulic cartridge needle valve drawings provided by Rogelio, the production time is only 30 days. I told him that the lead time was only 30 days, and the manufacturing quality of hydraulic cartridge needle valve was up to the standard of HydraForce, few Chinese hydraulic valve manufacturers could meet these requirements. Rogelio thought that I was ready to give up, he was willing to give AAK 40 days and paid for 100 hydraulic cartridge needle valves the next day. 30 days later, AAK sent 100 hydraulic cartridge needle valves to their Vietnam factory. Rogelio informed by email last week that it was out of his expectation that AAK still completed the production in 30 days. Their customer was very satisfied with their replacement of the hydraulic cartridge needle valves. Rogelio also specifically mentioned that he had asked more than 10 hydraulic cartridge needle valve manufacturers, their lead time was at least 50 days and can not 100% guarantee to benchmark the manufacturing quality of HydraForce. AAK was the only one that could catch up with the delivery date and also benchmarked the manufacturing quality of HydraForce. For this non-standard hydraulic cartridge needle valve, AAK has 3 advantages, which are beyond the reach of most hydraulic cartridge valve manufacturers: 1.AAK adopts Japanese OKK ultra precision machine tool, and the machining accuracy of components can reach 0.01~0.3�¼m. The precision of shape and contour is 0.003 - 0.1�¼m. Its production efficiency is 30% higher, which is the cornerstone of AAK's ability to catch up the delivery. 2. AAK has been hydraulic cartridge valve ODM manufacturer of 3 world top 500 companies for 10 years. Its quality control process is more strict than the ISO certification system. We have been focusing on details and constantly optimizing technology.

Recently, I received the second re-order of a hydraulic pressure reducing valve from French client Chinning. I still remember when I first met Chinning in 2020, Chinning purchased hydraulic pressure reducing valves in a hydraulic valve factory and encountered quality complaints from her customers. The hydraulic pressure reducing valve was deformed in less than 3 months, and some valve spools and valve sleeves were seriously worn. More and more customers began to return goods, and the old suppliers did not cooperate with her work. Chinning had a big headache at that time, and the owner kept putting pressure on her to find a hydraulic valve manufacturer with exquisite quality as soon as possible. Chinning did not find a new hydraulic valve manufacturer very smoothly. Because her hydraulic pressure reducing valve had a special use scenario and required high hardness of materials, it was unbearable for ordinary factories. At the same time, under the environmental protection policy of 2019, many previous heat treatment and processing factories were shut down, so the supply supporting system was disrupted, and the heat treatment and processing of many hydraulic valve manufacturers could not keep up. how does AAK ensure the service life of hydraulic valve products We didn't answer directly, but asked her if the hydraulic valves you purchased had the problem of deformation and rapid wear. She also replied quite frankly that she should find a hydraulic valve manufacturer that paid attention to the service life of hydraulic valves in the fastest time. I sent her several samples of hydraulic pressure reducing valve and told her that different parts of our hydraulic pressure reducing valve have different material hardness standards, and some could reach about 50-55HRC or higher. There is even no problem with 65HCR with special requirements. The service life of hydraulic pressure reducing valve is our hard index. More than one week after we sent out the samples of hydraulic pressure reducing valve, we received Chinning's email, including the drawings of hydraulic pressure reducing valve and the hardness requirements for various components. She asked whether we could produce this hydraulic pressure reducing valve? I told her that his hydraulic pressure reducing valve is not difficult, but just the working scene is some special. As long as the heat treatment process is a little unique, it could ensure her requirements. The long service life of hydraulic valve is the most critical.