Valves

A high-precision hydraulic manifold block, has been adjusted by the original manufacturer for many times, the benchmark error of the hydraulic manifold block still cannot be eliminated. AAK took it over under the introduction of old customer, optimized the original processing technology, and added the finishing boring process before the vertical drilling sequence to re calibrate the positioning of the V-shaped block, so that the benchmark error of the hydraulic manifold block was controlled at 0. Tom sent the order of the hydraulic manifold blocks of more than 20000 dollars. Tom is from Holland. They should be the top 3 of the hydraulic companies in Holland. Tom, introduced by his friend Mathias, sent us an inquiry for hydraulic manifold block. After communication, we knew that Tom learned from Mathias that AAK hydraulic technology has changed every year in recent years, and have supplied hydraulic manifold blocks to the world's top 500 companies, so he contacted me. Tom told us the problems with the original hydraulic manifold block manufacturer. Turning Φ 215mm excircle and Φ 88mm inner hole, outer circle center as benchmark, turning Φ 205h8 uses a special fixture, which also uses the outer circle center as the reference for turning. There should be no datum misalignment error, but the hole position is out of tolerance. After 2 days of discussion, AAK hydraulic engineers basically determined that it was caused by the positioning error of V-shaped block in the machining center. Tom was surprised by our analysis and half believed it. I told him that AAK was willing to sample this hydraulic manifold block. If the parameters were not up to standard, the development cost would be refunded. After 30 days, AAK sent 5 hydraulic manifold block samples. 2 months later, Tom sent us the official order for hydraulic valve block of more than 20000 dollars. The reason why AAK can effectively solve the positioning benchmark error is that starting from the production process, it deliberately adds the finishing boring process before the vertical machining sequence drilling to re calibrate the positioning of the V-shaped block. After optimization of AAK hydraulic manifold block: vertical machining center, turntable rotates to 90 ° fine boring φ 88H7 inner hole → drill φ 215mm on cylindrical end face φ 25mm hole allowance → boring φ 25mm hole → rotary table rotates to 0 ° for fine boring φ 110H7 hole → finish milling φ Upper end face of 53mm hole → drill φ On 205mm excircle end face φ 22mm hole allowance → boring φ 22mm hole → rotary table rotates to - 90 ° fine boring φ 88H7 inner hole → drill φ 215mm on cylindrical end face φ 25mm hole allowance → boring φ 25mm hole. The optimized processing technology can reduce the influence of datum movement error to zero, and the positional and vertical accuracy can be better guaranteed. AAK hydraulic manifold block, zero benchmark accuracy error, welcome to try! https://www.aakindustry.com/info-detai , l/hydraulic-manifold-blocks-aak454

AAK hydraulic pilot operated relief valve adopts diamond reamer technology, and the valve hole accuracy of hydraulic relief valve is guaranteed to be within 3μm, the surface roughness reaches Ra0.2-0.4. AAK hydraulic relief valve is sensitive and the valve spool is not stuck. It exceeds 99% of its peers. Nick, who has cooperated for 6 years, still orders back from AAK. Nick is the buyer of John Deere company. He has cooperated with AAK hydraulic valve for more than 6 years. The boss trusts him very much. Recently, a batch of bulldozers they sold to South Africa were complained that the hydraulic system was unable to start. The problem was that the valve body hole roundness of the hydraulic pilot operated relief valve was poor and the valve spool was easy to get stuck. The boss felt very strange. In the past 6 years of cooperation with AAK hydraulic valve, there was no complaint about the hydraulic pilot operated relief valve. After checking, he knew that Nick found a new supplier for this hydraulic pilot operated relief valve, which is 17% cheaper than AAK. The approval samples of hydraulic relief valve provided by the hydraulic valve manufacturer are qualified. Unexpectedly, the accuracy of hydraulic relief valve shipment is uneven. The boss asked Nick to contact AAK hydraulic valve, reproduce the hydraulic relief valves, and ship them directly to South Africa. We were a little surprised when we received an email from Nick to purchase 100 hydraulic relief valves and ship them directly to South Africa. Nick frankly told us that there were problems with the shipments from the original hydraulic relief valve manufacturer and needed the help of AAK to solve the customer complaints together. The difficulty of customer is the difficulty of AAK. We give priority to the production of this batch of hydraulic relief valves. After 35 days, the South African customer of Nick received the replacement of hydraulic pilot operated relief valves, and the whole after-sales process satisfied the customer. Nick sent an inquiry for a new hydraulic relief valve a few days ago. He specially said that his boss asked him to take AAK as the first choice for future hydraulic relief valves, because the quality of AAK hydraulic relief valve has not had any quality complaints in the past 6 years. Comparing the hydraulic relief valves produced by AAK with its peers, it will show why AAK hydraulic relief valve is sensitive and the valve spool is not stuck, which exceeds 99% of its peers. Nick, who has cooperated for 6 years, still orders back from AAK. For the machining of hydraulic relief valve hole, most peers use rigid Boring Reamer or stepped reamer, which has high production efficiency, but the hole accuracy is generally 7μm or above, it is difficult to stabilize on one data, and the roughness is fluctuated at the range of Ra1.6-3.2. AAK uses the diamond reamer to process the valve hole of hydraulic relief valve. In the grinding process, the reamer moves regularly in circumference and axis, and the metal is cut completely without trace with the micro edge of diamond particles. The accuracy of the valve hole of the hydraulic relief valve is guaranteed to be within 3μm, the surface roughness reaches Ra0.2-0.4, which almost avoids the roundness and cylindricity errors of the valve hole, improves the coaxial accuracy, and unifies the accuracy data. AAK hydraulic relief valve is sensitive, and the valve spool is not stuck, exceeding 99%. The 17% more expensive AAK hydraulic relief valve, has its unique valve hole processing, incomparable quality. You are welcome to have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-relief-valves-aak142

This week, we’d like to introduce a hydraulic cartridge relief valve equivalent to SUN RDDA. This Direct-acting relief cartridge is normally closed, pressure-limiting valve used to protect hydraulic components from pressure transients. In October, a customer in Russia found AAK when looking for a hydraulic cartridge valve manufacturer in China on Google. He sent us an inquiry with a list of over 40 model codes equivalent to SUN standard cartridge valves, the qty is 10 pcs each as the trial order. If testing is OK, the annual order will be 500 pcs – 1,000 pcs. 1 week after we sent the quotes, the customer advised that they feel AAK will be a very good fit for them, and they would like to visit AAK factory in November. Last week, customer came to AAK factory and visited the entire production process, from raw material cutting, rough machining, fine machining, accuracy measuring, cleaning, assembling, function testing to packaging etc. The customer was deeply moved by AAK's rigorous operation. During the meeting, customer placed an order of 500 pcs for a hydraulic solenoid cartridge valve equivalent to SUN RDDA, which is really out of our expectation. We learned that previously, they purchased it from another hydraulic cartridge valve manufacturer in Ningbo China, but the function and performance is not stable. They will need AAK to send 10 pcs for testing first and ship the remaining 490 pcs after the testing.   AAK hydraulic cartridge relief valve E-RDDA two advantages: 1. Pressure Rating 350 bar (5000 psi), benchmarking SUN Hydraulics 2. Its service life is 2 times that of its domestic peers Technical parameters of AAK E-RDDA Direct-acting relief valve: Max. Operating Pressure: 350 bar (5000 psi) Flow: 25 gpm Internal Leakage: 10 drops/min. Temperature: - 30 to +100 °C (with Standard Buna N seals) Fluids: Mineral-based fluids with viscosities of 7.4 to 420 cSt. Cavity: T-10A   AAK E-RDDA hydraulic cartridge relief valve, benchmarking SUN RDDA, its service life is 2 times that of its domestic peers. You are welcome to give it a try. AAK HYDRAULIC CARTRIDGE VALVES (729) 2023-12-04 https://www.aakindustry.com/info , -detail/relief-valves-aak729

At the beginning of last year, LIEBHERR customized a high-power and high- pressure excavator for their customer. 6 months later, customer complained about oil leakage. After testing, the engineer found that there was no problem with the hydraulic relief valve. The leakage was concentrated in the auxiliary valve, so it was locked as a sealing problem. After disassembling the hydraulic relief valve, it was found that it was caused by the serious wear of the sealing ring. David was responsible for the purchase of hydraulic valves. After he contacted the original factory of hydraulic relief valve, the manufacturer soon sent a new sealing ring. However, a similar situation occurred again in 2 months, and the sealing ring of hydraulic relief valve was replaced for 3 consecutive cycles. The customer was very dissatisfied with this after-sales service and complained directly to the headquarters. The boss asked David to come up with a thorough solution as soon as possible. David was also surprised why the sealing ring of the hydraulic relief valve had to be replaced in 2 months. The manufacturer informed that the pressure and limit temperature of this equipment are very special, especially for high- frequency operation. The service life of the sealing ring of the hydraulic relief valve can only be guaranteed in 2 months, it has to be replaced every 2 months, no other solution. David contacted many other hydraulic valve manufacturers, most of them said that they could only replace the sealing ring every 2 months, and some also suggested changing the whole hydraulic system assembly of the excavator. After 1 year, David hasn't come up with a new plan yet. The customer is unhappy and the boss keeps pushing him. David browsed AAK website and asked directly by email whether AAK has tips on the sealing ring of hydraulic relief valve or not. After receiving the drawings and working conditions of the hydraulic relief valve from David, we found that the pressure of the hydraulic relief valve is 550bar, the limit temperature is 180 ℃, and it has very high-frequency operation. Even the high temperature resistant fluororubber sealing ring is not suitable for this hydraulic relief valve. After 3 days of thinking, AAK technical team jumped out of the dead end of thinking about the material of the sealing ring. Can we redesign the structure between the sealing ring and the valve? After the test, it was found that adding "Glyd-ring" may solve the sealing problem of the hydraulic relief valve. David asked us to design and make samples of the hydraulic relief valve installed with Glyd-ring as soon as possible. After 30 days, their engineer installed AAK hydraulic relief valve for customer. 2 months later, the customer didn't call to complain. David felt that AAK might have solved the sealing problem of the hydraulic relief valve that had plagued them for more than a year. 6 months later, there was still no leakage. David was relieved finally. The customer recognized this solution, and the boss was also very happy. In particular, their engineers appreciated AAK design ability and quality. AAK newly designed hydraulic relief valve is to open a small groove in the contact section between the valve spool and the valve sleeve to install the dynamic seal of Glyd-ring. Most peers can't think of such installation. Even if they think of it, there may be few factories who can operate the process. Such a sealing system can ensure high-frequency friction. The material has stable performance, the pressure resistance range can be below 600bar, and the temperature range is - 30 ℃ - + 200 ℃. Through the dynamic deformation of the sealing ring, it can ensure 100% sealing and prevent the pressureless liquid leakage. The sealing of AAK hydraulic relief valve, may be thought of by peers, but it may not be possible to do so. There are wonderful tricks in seal design. Welcome to give it a try! https://www.aakindustry.com/

Recently, a new customer of hydraulic cartridge valves from the United States arranged for a QC in their Shanghai office to stay at AAK hydraulic cartridge valve manufacturer workshop for 2 weeks to monitor the sampling process of their new hydraulic cartridge valves. At the beginning, I suggested that there was no need to do so. Going to the cartridge valve manufacturer workshop and staying there for 2 weeks, would not only waste his money and time, but also make the cartridge valve manufacturer's engineers uncomfortable. But the customer doesn't think so and has to arrange someone to come over and monitor the process. Has he ever suffered losses from other hydraulic cartridge valve manufacturers in China before? I'm too embarrassed to ask this question. 2 weeks later, this QC is ready to go back. I had a conversation with him and asked him to talk about his feelings during the past 2 weeks monitoring the sampling process at the AAK hydraulic cartridge valve manufacturer workshop. He just said, "Except for engineers who sometimes don't accept my opinions, everything else, whether I am present or not, is strictly carried out according to the integrated hydraulic cartridge valve sample sheet and processing drawings.” I told him that the engineers of AAK hydraulic cartridge valve manufacturer did not like me to command or supervise their work, and the QC expressed that he did not understand. I shared a small story with him that greatly inspired me. A famous Master in Buddhism Xingyun was asked a sharp question, 'Master, do you secretly eat meat when you are alone?'? Buddhism prohibits eating meat. Master Xingyun did not answer and asked the other person a question, "Can you drive?” The other party said, 'Of course I can.'. “Do you fasten your seat belt while driving?” The other party thought for a moment and said, “why not wear a seat belt?” The master asked him again: Would you wear your seat belt without police supervision? The person remained silent for a moment. At this moment, Master Xingyun said another sentence: If you wear your seat belt for your own safety, what does it have to do with whether the police are present? I practice to give myself peace of mind. What does it matter if someone is around or not? The core of this small story lies in a huge difference between voluntary and passive. Excellent engineers of AAK hydraulic cartridge valve manufacturer work voluntarily and do not need to be supervised, but the engineers from most of the hydraulic cartridge valve manufacturers need to wait for tasks and customer drawings. This QC mentioned that it is not the first time he has followed the sample at a hydraulic cartridge valve manufacturer workshop, but it is the first time he has experienced it at AAK. The excellent engineers of AAK hydraulic cartridge valve manufacturer do not need supervision. If a significant amount of time is spent supervising employees to do things well, not only do I feel tired, the staff are tired, and the Team effectiveness is also low, but most of the hydraulic cartridge valve manufacturers are like this. Cooperating with such hydraulic cartridge valve manufacturers, many processes need to be watched, which wastes time, and also tired. Once you leave one task to the hydraulic cartridge valve manufacturer AAK, and you can proceed with other tasks, no need to monitor any process, no worry, no concern, just peace of mind. AAK HYDRAULIC VALVES (618) 2023-07-02 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak618

Walt placed an order for 1000 hydraulic threaded cartridge valves at one time last week, which surprised me. Three years ago, I met Walt from an American company at the Shanghai PTC exhibition. He communicated with us at our booth for more than half an hour. After the exhibition, Walt sent an email saying that his company happened to have a newly developed hydraulic equipment, which needs to use hydraulic threaded cartridge valves. He asked AAK to urgently provide 30 samples of hydraulic threaded cartridge valves according to his drawings. AAK sent out 30 hydraulic threaded cartridge valves after 25 days. After this, there was no inquiry for any hydraulic threaded cartridge valves from him. Half a year later, Walt sent a new test order of 40pcs for another new hydraulic threaded cartridge valve. Same as last time, there is no further news after delivery. In this way, we just received 2 test orders in about 2 years. I thought that there should be a mistake on the quantity of this large order of hydraulic threaded cartridge valve this time. After several rounds of emails, we know the story for this hydraulic threaded cartridge valve. Their company has only begun to purchase hydraulic valves from China in recent 3 years. For the hydraulic threaded cartridge valves purchased at the beginning, there are always complaints from customers after a period of time, such as leakage or jamming, insensitive opening and closing or serious wear and tear, etc. In the past 2 years, Walt also tried samples from more than 20 hydraulic valve manufacturers. The same problems still occur after each replacement. Only AAK hydraulic threaded cartridge valves have not received a complaint. Walt compared more than 20 suppliers for 2 years, and only AAK hydraulic threaded cartridge valves had no complaints. This time, he strongly suggested his boss that the future hydraulic threaded cartridge valves can only be purchased from AAK. His boss also wants to know why AAK can ensure that there are no complaints about the hydraulic threaded cartridge valves. AAK hydraulic valve not only has the CNC machining center imported from Switzerland, but also has its own upgraded and refitted independent fixtures, which eliminates man-made errors. At the same time, we have accurately controlled every detail of the processing, production, assembly, inspection and packaging of each hydraulic threaded cartridge valve, which has surpassed the vast majority of domestic peers. Firstly, AAK will divide the installed products into several assembly units according to the structure and process characteristics of the hydraulic valve, reduce the single parts entering the general assembly as much as possible, and ensure the reasonable assembly sequence and specified assembly accuracy of the hydraulic valve. All parts will be accurately measured, strictly inspected and tested before and after the general assembly of the hydraulic threaded cartridge valve. Secondly, AAK adopts the matching method for assembly, which will divide the parts into several groups according to the strict size range, and then assemble the corresponding matching parts together to achieve the required assembly accuracy. Finally, after assembly, check whether there is surplus or lack of parts, whether each connecting part is loose and skewed, and whether the residue of sealing belt on cone plug is removed. At the same time, test each hydraulic threaded cartridge valve, including leakage, flexibility, opening and closing performance, etc. AAK hydraulic threaded cartridge valve is free of complaint. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-threaded-cartridge-valves- aak159

Although AAK is only a manufacturer of hydraulic cartridge valves, I think the most important thing is the positioning of AAK. Once the direction is determined, the production of hydraulic cartridge valves, the innovation of hydraulic cartridge valves, and the sales of hydraulic cartridge valves will be smooth. If we insist on the strategic positioning of "slow mind and diligent hands", we may not be rich and powerful, but among the peers of hydraulic cartridge valves, we must have no anxiety. If the manufacturer of the hydraulic cartridge valve is ambiguous in positioning, it is like a blind man touching an elephant. The blind man who touched the elephant's leg said, "The elephant is like a big pillar!" The blind man who touched the elephant's trunk said, "The elephant is thick and long, like a huge python." The blind man who touched the elephant's ear said, "The elephant is light and slippery, like a fan." The blind man who touched the elephant's body said, "The elephant is actually big and thick, like a wall." Finally, the blind man who caught the elephant's tail said, "You are all wrong! In my opinion, the elephant is thin and long, just like a rope.” As a hydraulic cartridge valve manufacturer in China, there is not much complicated emphasis on positioning. AAK has 3 dimensions and 3 types, namely 3 x 3 positioning. AAK hydraulic cartridge valve quality 3 positioning: 1. Manufacturing quality: if peers use material A to produce hydraulic cartridge valve parts, then AAK will try to use material A+; If peers use domestic hydraulic components, AAK will try to use those made in Germany or Japan. Perhaps the product cost will increase by more than 15%, but the manufacturing quality will increase not be less than 30%. 2. Parameter performance: the service life of the hydraulic cartridge valve of peers is 1 year, and AAK will insist on 2 years. 3. Innovative function: if the hydraulic cartridge valve of the peers has only 1 function, and AAK can innovate the second or third function according to the customer's needs. AAK hydraulic cartridge valve price 3 positioning: 1. The function and performance of AAK hydraulic cartridge valves are synchronized with SUN, HydraForce, HAWE and other first-line brands, but the price is only 70% of that of the big brands, or even lower, so that AAK customers can make more money. 2. AAK hydraulic cartridge valve is positioned at the top 1% of the domestic industry segment, and its price may be 20% more expensive than that of its peers, but AAK service life of hydraulic cartridge valves is twice that of its peers. 3. AAK hydraulic cartridge valve does not engage in brand building or pursue brand premium, and supports the premium with trust. AAK hydraulic cartridge valve 3 types of customers: 1.Global top 500, global first-tier and second-tier brands, such as Honeywell, SUN, HydraForce in the United States. 2. Domestic and foreign listed companies, well-known large enterprises, such as Skyjack Inc. in Canada. 3. High-quality and affordable small and medium-sized enterprises, such as HAWE in Germany. Don't think too high about famous enterprises and large enterprises. A considerable part of their key semi-finished products, spare parts and complete sets are quietly supported by factories without brands but with high quality. Hydraulic cartridge valve is the core component of most hydraulic equipment. The parameters and performance of hydraulic cartridge valve directly reflect the technical strength of the factory, which is the practice of AAK hydraulic cartridge valve. In terms of the hard indicators of these technologies, AAK hydraulic cartridge valve is not inferior to large enterprises or well-known enterprises. Without diamond cutter in hand, I dare not and cannot open the factory. AAK hydraulic cartridge valve, 3 x 3 positioning, as long as the direction is right, it will eventually arrive destination, and the scenery is good all the way. https://www.aakindustry.com/info-d , etail/cartridge-valve-manufacturers-aak528

Last week, Eddy emailed me that after AAK hydraulic check valves of the test order has been used for 3 months , the O-ring seal was still free of wear. He was finally relieved. Eddy, who works at Terex company in the United States, has successfully purchased hydraulic valves from China over the years, and his boss is also very satisfied. At the beginning of last year, a customer complained about the hydraulic equipment supplied by their company for offshore oil field exploitation, which made him very passive. Some equipment has the phenomenon that the drilling machine rises slowly or cannot rise. Their engineer found that the hydraulic check valves used in the oil circuit of the hydraulic equipment had internal leakage, the one-way oil circuit could not be fully locked, resulting in the inability of the equipment to rise. Their engineer can only replace the hydraulic check valves with the previous spare ones and bring the problematic hydraulic check valves back to the company. Eddy sent these hydraulic check valves to the original supplier. The supplier replied that the reason for the leakage in the hydraulic check valves was that the ambient temperature was too low. The O-ring seal of the hydraulic check valves was hardened and worn quickly in extremely cold conditions, which was difficult to solve. Eddy knows that if he can't give reply to customer like this, he must find a manufacturer who is able to produce the hydraulic check valves working at low temperature. Eddy contacted several hydraulic check valve manufacturers, most of them reported that it was difficult to achieve 100% leakage free under such extremely cold conditions. Eddy was worried. When Eddy contacted us, our engineer wanted to see the real reason for the wear of the O-ring of his hydraulic check valves and asked him to send the defective hydraulic check valves. After receiving the samples, our engineer realized that even if the cold resistant O-ring is used, it may not be 100% leak free, and the structure of the sealing ring needs to be changed, because the internal structure of this hydraulic check valve is a little complex. Eddy said that this is the only different reply he received. It seems that Eddy still doesn't believe that AAK can solve the leakage problem of the hydraulic check valves. I told him that a Russian customer has purchased hydraulic relief valves from us, and their hydraulic equipment is also used in oil fields. The customer told us that under extremely cold conditions, the service life of AAK hydraulic relief valve is more than 4 times that of its peers. Three weeks later, we sent 4 pieces of hydraulic check valves of the test order to Eddy. There was no news after 3 months. Until last week, we received email from Eddy amazing that their engineers also admired our idea of adding retaining ring to the O-ring of the hydraulic check valves. I told Eddy that the installation of retaining ring can play the role of axial fixation, reduce the gap between the O-ring and the low-pressure side of the seal, and prevent the O-ring from being 'extruded'. At the same time, the structure of O-ring added with retaining ring will bear much greater pressure than when the O-ring is used alone, which reduces the wear of the O-ring. Moreover, AAK uses PTFE retaining rings that can withstand extremely low temperature and can be used for almost all media without hardening and damage. The most important thing is that AAK engineers can design and manufacture with strict tolerance according to the working conditions of their hydraulic check valves. That is, not only the material is good, but also the structure needs to be matched, but also the strict tolerance manufacturing during processing. In the hydraulic check valves, the quality of every part is related to the durability of the whole valve, including the small retaining ring. AAK can design and customize the hydraulic check valves according to the actual working conditions of customers. The hydraulic check valves with PTFE retaining ring can be used in extremely cold areas and ensure durability. AAK hydraulic check valves, has unique tips on designing the retaining ring, welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-check-valves-aak158

A while ago, hydraulic manifold manufacturer AAK interviewed a drawing engineer, and the 25-year-old boy felt quite clever, so I hired him. In less than 2 months, I truly witnessed his “cleverness”. He is often late for work and plays games during working hours. His supervisor reminded him several times, but there was no change. Yesterday, as I was coming back from outside, I heard him arguing with his supervisor. I didn't hear what they were talking about, but when I came in, the young man's expression became even more calm, and the supervisor's face turned red. The supervisor said, "Are you always late for work?" The young man calmly replied, "Yes, sometimes late, but our hydraulic manifold manufacturer AAK doesn't need to clock in?" Besides, I saw that you were also late sometimes. The supervisor hesitated for a while and said, "No need to clock in, it's not that you can be late casually.". The boy replied, "I'm not late every day either. If the hydraulic manifold manufacturer AAK requires us to clock in every day, then let everyone clock in.". The supervisor also said that you play games during working hours, hydraulic manifold manufacturer AAK pays you to work. The young man said, "Yes, but I always work, so I'm very tired. I need to take a break, otherwise the effect will not be good and the efficiency will be low. It's better to take a break before doing it.". The supervisor continued, saying that you didn't draw well either. The young man remained calm and said, "Yes, I admit it, but I try to improve every day. You need to teach me more. You don't usually care much about me.". Listening to their 3 questions and 3 answers, I was overjoyed. The supervisor was scolded by the young man and couldn't speak. I went over and called the supervisor to my office. I asked if the child's skills and attitude were not good, and the supervisor said yes. I said, “If yes, then you can just fire him and don't argue. If you are kind, he doesn't appreciate it.” Afterwards, upon reflection, I realized that this young man had a particularly effective way of arguing. His logic is that no matter what others say, he always affirms first. The final result was that the opponent's fist hit the cotton. These can also be used for reference on the daily communication between hydraulic manifold manufacturers and customers. For example, customers may not accept your sample time and may complain that it is a waste of time to come to you for a sample. Don't explain, just answer directly and say, "Yes, we work slowly and meticulously. If you accept this time, perhaps you will receive a surprise.". When your small stool is ready, there are teachers everywhere. The young man taught me a lesson: no matter what others say, he always affirms first. Hydraulic manifold manufacturer AAK, first affirms the customers, then cooperate with the customers, and then assist the customers. AAK HYDRAULIC VALVES (728) 2023-12-03 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak72 , 8

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 boss 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 boss 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 boss 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 boss 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. After comparing more than 20 hydraulic valve manufacturers, AAK is his most trusted hydraulic valve manufacturer. Perhaps his boss also knows that AAK hydraulic needle valve has never been complained. Although the pre-sales cost from AAK is 20% more, sometimes the after-sales cost of hydraulic needle valves purchased from other hydraulic valve manufacturers may exceed 20%. The boss finally agreed with Draper’s opinion. This time, the large order of hydraulic needle valves will be placed with AAK even if the price is 20% more expensive. Also, in the future, AAK will be the first choice for their hydraulic valves. The reason why Draper is not worried about the burr of AAK hydraulic needle valves is that he knows that AAK has the unique burr removal process that most other hydraulic valve manufacturers can't do. Firstly, the accurate position of the burr is determined, and the burr is removed by high-pressure solution jet. Then, there is one more step to re-check the residual burr that the other peers will not do. The burr part is rechecked by endoscope C50. If there are still residual burr, clean it again and recheck it again until it is completely eliminated. This is a detail awareness lacked by other hydraulic valve manufacturers, and also the reason why AAK can achieve 100% free of burrs. AAK endoscope equipment uses the number of CCD pixels and optical fiber conduction to automatically adjust the brightness during detection. It performs 360 degree detection on each hole in the valve body and clearly grabs each hidden burr, so as to ensure that each hydraulic needle valve is 100% free of burr residue. AAK hydraulic needle valve is unique in detail inspection. Welcome to have a small try! https://www.aakindustry.com/

Uistan comes from a hydraulic equipment manufacturing company in New Zealand, and has been in the company for 3 years. At the beginning of this year, an old customer of their company wanted to place the reorder for last customized hydraulic hoist, but required the stability to be increased by 10%. Their engineers required that: the hydraulic cylinder has a rod cavity, which is controlled by pressure; Rod less chamber, controlled by flow. Therefore, the hydraulic cartridge pressure control valve must have flow control and pressure control functions. Uistan contacted the original manufacturer to optimize the hydraulic cartridge pressure control valve, but the manufacturer was unable to do it. Uistan contacted more than 10 hydraulic cartridge valve manufacturers, but they were all not confident to guarantee that the hydraulic cartridge pressure control valve has both flow and pressure control functions. The engineer urged the progress several times, and Uistan was worried. While browsing Google, Uistean noticed AAK and left us a message: How to make the hydraulic cartridge pressure control valve have flow and pressure control functions at the same time? For this dual control hydraulic cartridge pressure control valve, there are not many hydraulic cartridge valve manufacturers that can produce it. After communication, we learned that his customer requested to improve the stability of the equipment, and they made a dual function request for the original hydraulic cartridge pressure control valve. In fact, AAK has customer cases for dual function hydraulic cartridge valves. Uistan was relieved when he learned. He hoped that AAK can help with the sample quickly. After 35 days, AAK sent 8 samples of hydraulic cartridge pressure control valves. 3 months later, Uistan informed by email that after installing AAK hydraulic cartridge pressure control valve, the customer was satisfied with the prototype, and the stability of the hydraulic hoist was at least 10% higher than before, and was willing to buy it again. The dual spool hydraulic cartridge pressure control valve designed by AAK allows two oil ports to adopt flow control and pressure control respectively, as follows: 1. Two connected fluid ports are respectively set on the two valve spools. The included angle between the center of the two ports and the connecting line between the ball center of the valve spool is 90 °. The two valve spools are set tangently. The caliber of the 4 fluid ports matches with the connecting port of the pipeline. 2. The lower ends of the two valve stems are connected with the valve spool. The valve body is provided with 4 pipeline connecting ports. The valve spool is arranged in the valve body. The upper end of the valve stem is connected with the valve stem control mechanism through the valve body. The center lines of the pipeline connecting ports are all located in the same plane. The contact parts between the two valve stems and the valve body are respectively provided with sealing rings. 3. The valve body bulges towards the middle of the valve body to form a diaphragm. The 4 fluid ports are connected through the diaphragm through-hole. Both sides of the diaphragm through-hole are attached with O-ring seals, which has good sealing performance and reduces the wear of the valve spool. AAK hydraulic cartridge pressure control valve, dual spool, dual control, dual function, you can also try a small order! https://www.aakindustry.com/info-det , ail/pressure-control-valves-aak453

Sarabi from Israel, a hydraulic cartridge valve customer for military service. 2 weeks ago, he inquired about a hydraulic cartridge valve from AAK, for a military customer. I specifically investigated that company online. It is a very powerful hydraulic cartridge valve customer, and a type that I really like. After several rounds of communication, there was no any news for a week. The day before yesterday, Sarabi's feedback came: The price of AAK is a bit higher than other hydraulic cartridge valve manufacturers. The Israeli customer is very shrewd. They may have checked the price with other hydraulic cartridge valve manufacturers to compare prices in those days without any news. We often talk about quality comparison shopping, but in fact, it has now become a price comparison shopping. Firstly, I apologized to Sarabi for not properly introducing the hydraulic cartridge valve manufacturer AAK, which caused him to have no trust about AAK, no trust about the quality. Without trust, as a result, he had nothing to compare and could only compare prices. Subsequently, I introduced him AAK Partners: 1)Supply for HydraForce for 9 consecutive years and SUN for 5 consecutive years. 2)Honeywell, a Fortune 500 company, is also our client. 3)The listed company Skyjack Inc is also developing products at AAK. Selling points of hydraulic cartridge valve manufacturer AAK: 1)Manufacturing quality benchmarking with international first-line brands, top 3 in Ningbo. 2)AAK hydraulic cartridge valve has been used by Russian customers on Aircraft. 3)3-year warranty, no leakage, no vibration, no noise. I also invited him to read over 600 articles published on our website about AAK hydraulic cartridge valve customer cases, advantages, features, the unique characteristics different from the other hydraulic cartridge valve manufacturers in Ningbo China, the trust established in customers' minds on the internet. Only when hydraulic cartridge valve manufacturer AAK has become your default preferred supplier, perhaps you don't think AAK is too expensive. I told Sarabi not to compare AAK with other hydraulic cartridge valve manufacturers in Ningbo China, because AAK has no peers. Why does AAK has no peers? The purchase reasons, selling points, extensions, features, advantages, and benefits of AAK are already a fact. Then you think about it, how can there be a same hydraulic cartridge valve manufacturer like AAK in China? Sarabi ended this round of communication with a very interesting and refreshing exchange at the end. Today, Sarabi placed his PO and only requested a 2% discount. In half an hour, I sent back S/C. Today is a meaningful day for AAK, a hydraulic cartridge valve manufacturer in China, and for me. Taking this as a diary, I would like to see after 10 years, how many Israeli customers AAK, a hydraulic cartridge valve manufacturer in China, will have. AAK HYDRAULIC VALVES (617) 2023-07-01 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak617

Jeff comes from Israel and has been purchasing hydraulic pressure control valves from China for less than 2 years. At the beginning of this year, a hydraulic pressure control valve with valve seat precision accuracy within 2μm has worried him for over 1 month. This hydraulic pressure control valve is used for hydraulic power units in the aviation industry. The hydraulic pressure control valve sample provided by the original manufacturer showed slight leakage after pressurization. Jeff's engineer found that the valve seat precision accuracy of the manufacturer was around 4μm. Jeff had to search for a new manufacturer of hydraulic pressure control valves. Jeff left a message on the AAK website: Can AAK control the valve seat precision accuracy of the hydraulic pressure control valve within 2μm? After communication, it was learned that he encountered difficulties in purchasing hydraulic pressure control valves from China. I sent out two models of AAK existing hydraulic pressure control valves the next day for him to test the valve seat precision accuracy. In less than 2 weeks, Jeff said that AAK's valve seat precision accuracy has been recognized by their engineers. He asked us to customize the hydraulic pressure control valve based on their drawings. After 35 days, AAK sent out 30 hydraulic pressure control valves. Yesterday, Jeff informed us via email that the sample was successful and the hydraulic power unit had been delivered to his client. If without any accidents, they will place a regular order for the hydraulic pressure control valves soon. In fact, the precision accuracy control of the valve seat is not difficult. The original hydraulic pressure control valve manufacturer Jeff found may not have the suitable equipment. The processing of this hydraulic pressure control valve is carried out by AAK using high-precision lathes of CITIZEN in Japan. Among more than 200 hydraulic valve manufacturers in Ningbo China, there are no more than 4 manufacturers who have this machine tool. Its advantage is that the component processing precision accuracy can reach IT8 to IT6 levels, and the tolerance can be guaranteed to be within 2μm, surface roughness Ra1.6-0.8μm. It is capable of achieving point control, with a spindle speed range of 300~10000r/min, its travel parameters can be controlled at 200mm/min. The most crucial thing is that the driving method of the back spindle adopts a built-in motor, which achieves the spindle speed range of 10000r/min and also improves the production efficiency of the hydraulic pressure control valve. AAK hydraulic pressure control valve, the valve seat precision accuracy within 2μm. For valve with high precision requirements, you can also give a try with us! AAK HYDRAULIC VALVES (616) 2023-06-29 https://www.aakindustry.com/info , -detail/pressure-control-valves-aak616

The local Israeli manufacturer was not willing to take risk to develop the hydraulic cartridge relief valve due to small size, and gave it up. After taking over, AAK made 3 improvements in the structure of the hydraulic cartridge relief valve, met the 3 requirements: 450bar high pressure resistance, 500L/min large flow, small pressure loss, and small volume. 3 months later, Vaughan sent an order for 600 hydraulic cartridge relief valves. Vaughan is from Israel, and they mainly focus on hydraulic equipment in the military market. At the beginning of last year, they customized a hydraulic power unit, which needs to have a pressure resistance of 450bar, the flow controlled by the hydraulic cartridge relief valve in the system exceeds 500L/min, with small pressure loss and small volume. He contacted a local hydraulic relief valve manufacturer to try the sample. The manufacturer reported that there was no problem with the functional requirements, but the size was too small and the risk was high, so he was unwilling to develop it. Vaughan contacted more than 10 hydraulic cartridge valve manufacturers, but it was fruitless after 1 week. Vaughan noticed AAK's article on high pressure and large flow hydraulic cartridge valves on B2B. He emailed me: can AAK try the hydraulic cartridge relief valve with high pressure resistance of 450 bar, flow over 500L/min, small pressure loss and small volume? My reply: It depends on how small the volume is. Vaughan sent the drawing of hydraulic cartridge relief valve. After getting the confirmation that AAK can optimize the internal structure of the hydraulic cartridge relief valve, he confirmed for us to make samples. After 50 days, AAK sent 12 hydraulic cartridge relief valve samples. 3 months later, Vaughan sent an order for 600 hydraulic cartridge relief valves. Their engineers were very satisfied with AAK hydraulic cartridge relief valves, which not only met the high pressure resistance of 450bar, large flow of 500L/min, small pressure loss, and small volume, but also completely met the requirements of the drawing, solving the space barrier of their power unit. AAK has made 3 improvements in the structure of the hydraulic cartridge relief valve: 1. The inner wall of the outer end of the hydraulic cartridge relief valve cage is provided with a boss to limit the valve spool in the valve cage. The valve spool, the valve cage and the valve cover form the first chamber. The first chamber is provided with a pressure regulating spring, one end of which is connected with the valve cover and the other end is connected with the valve spool body. 2. The right end of the valve cage is provided with a first oil port, and the circumference of the valve cage is provided with 2 rows of second oil ports. 3. The outer wall of the right end of the valve spool is provided with a groove, and the groove and the second oil port of the valve cage form a second chamber. For the hydraulic cartridge relief valve with such structure, when the oil enters from the first oil port and the oil pressure on both sides of the valve spool is not equal, the valve spool moves to the left, the 2 oil ports are connected, the valve port is opened for overflow, and the flow pressure loss in the valve is small. The valve cage is provided with a plurality of second oil ports to ensure large flow. AAK hydraulic cartridge relief valve, has small pressure loss and compact size, you can also try a small order! https://www.aakindustry.com/info-det , ail/relief-valves-aak452