Mechanical Hardware

Logan has been a purchaser of a hydraulic company in the United States for several years, and the purchasing of hydraulic valves in China is also very smooth. But recently, a high-precision hydraulic relief valve order worth more than $30,000 wasted him a lot of time. The original hydraulic relief valve manufacturer made the samples twice, but was still not approved by the customer. His customer understood that the original manufacturer was unable to meet the requirement of 0.3mm finish size allowance, and asked him to change the hydraulic relief valve manufacturer to make samples for the third time. If the hydraulic relief valve sample for the third time still cannot be approved, the customer can only cancel the order. This order attracted the attention of his boss, who asked him to solve the problem and get the sample of hydraulic relief valve approved at one time within 20 days. Five days later, Logan consulted many hydraulic relief valve suppliers, and most manufacturers said that they could not meet the standard of 0.3mm finishing size allowance. Logan is a little worried. He looks for hydraulic relief valve manufacturers everywhere on the Internet. He left a message on our AAK website: how can we guarantee the finishing dimension allowance? All such messages are basically for difficult problems encountered in the purchase of hydraulic valves. After some communication, it is understood that the Logan was stuck on the sample approval process of the hydraulic relief valve order, and he has contacted many hydraulic relief valve manufacturers, but no solution has been obtained. I suggested Logan try our sample directly, and let the test data to speak for itself and this also saves time. Logan doesn't seem to have a choice but to expect that maybe AAK hydraulic relief valve can pass the test. A week later, AAK sent out 3 hydraulic relief valve samples. Logan did not dare to send the samples to the customer directly after receiving them, so he had to find a third party for testing before sending them to the customer. Without incident, the customer approved AAK hydraulic relief valve samples. His boss was also surprised that how a hydraulic relief valve manufacturer found by Logan this time can solve the problem so quickly at one time. The heat treatment process in the early stage is the first step of finishing the size allowance. Most hydraulic relief valve manufacturers adopt local quenching, so the heat treatment process of the workpiece is not easy to control and may be deformed. As early as 6 years ago, AAK adjusted local quenching to overall quenching. At the same time, vertical flow treatment must be required for the hoisting mode in the process of quenching and tempering, so as to minimize the influence of tissue stress and thermal stress on deformation during workpiece heat treatment, so as to meet the requirements of dimensional allowance for finishing. Logan cancelled the order with the original hydraulic relief valve manufacturer without hesitation and confirmed the order with AAK hydraulic valve in two rounds. Logan privately told us that his customers like the hydraulic relief valve manufacturers such as AAK very much. The customer pointed out that AAK should be as the priority supplier for future inquiry of hydraulic relief valves. His boss was also very satisfied with his ability to quickly solve problems this time, and put higher and higher expectations on him. AAK hydraulic relief valves, strictly controls the size allowance of finishing to ensure the accuracy of products. You can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-relief-valves-aak170

This Monday, Arthur sent an email to purchase 1,600 hydraulic threaded cartridge valves at one time, which was a little unexpected. Arthur came from a hydraulic equipment manufacturing company in Italy. He met with us at the PTC exhibition in Shanghai 3 years ago. At that time, he communicated with us for about half an hour. Then there were several inquiries for hydraulic threaded cartridge valves and several trial orders for hydraulic threaded cartridge valves. Last October, he suddenly sent an email saying that he had a client in Ningbo who wanted to visit AAK hydraulic valve factory. We introduced in detail a series of production links from raw material inspection and warehousing to rough machining, finishing, process inspection, assembly of valve body and spool, testing, packaging, warehousing, marking and shipping of each part of hydraulic threaded cartridge valve. After the visit, Arthur's client said they were satisfied with the scale, equipment and management of AAK factory and left. I wondered if this was really Arthur's client. More than a month later after visiting the factory, Arthur said that his company has developed a new hydraulic equipment, which requires high-precision hydraulic threaded cartridge valve. AAK needs to quote and make samples for testing as before. AAK sent 16 samples of hydraulic threaded cartridge valves after 30 days. I still think that this one will be the same as that one year ago, no big waves. I didn't understand that I made the mistake of "I thought" until receiving the large order of 1,600 hydraulic threaded cartridge valves yesterday. Today, I learned by email that it was not his client who came to visit the factory last year, but his assistant who often stayed in China. Before the company developed this hydraulic equipment, his assistant ran to more than 30 hydraulic valve manufacturers in China, especially for this special hydraulic threaded cartridge valve. AAK hydraulic valve has its own advantages in equipment and extension of equipment and on-site detail management. In particular, the component testing room of AAK is constant temperature and humidity for 24 hours, which is very helpful for hydraulic threaded cartridge valves with high precision requirements. Because of the particularity of this hydraulic threaded cartridge valve, the accuracy inspection of each component should be completed in a specific environment. Some quality problems of the products of many hydraulic valve manufacturers are just due to the deviation of the test results caused by the instability of the test environment. In the view of many factories, this may be a small detail, but AAK has done extremely rigorous testing. His assistant has not found a second one in Ningbo who pays so much attention to detail. That's why Arthur chose AAK to produce this big order of hydraulic threaded cartridge valve. AAK hydraulic threaded cartridge valves, with much attention on details, high standard and high inspection. Welcome to try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-threaded-cartridge-valves- aak169

Consuelo comes from Spain and has been gradually purchasing hydraulic manifold blocks from China in recent years. Recently, they designed a new hydraulic manifold block and wanted to sample it from an old hydraulic manifold supplier in Ningbo China. The manufacturer stated that this hydraulic manifold block has complex oil circuits, high accuracy, and is difficult to process. They are not very confident, but they are willing to try it out. 2 months later, the sample was completed, but the accuracy of the hydraulic manifold block hole was not up to standard, and the hole had hidden burrs. The manufacturer had to give up. Consuelo contacted more than 10 other hydraulic manifolds manufacturers in China, but after a week, there were no results. Consuelo was very upset after wasting more than 2 months of time. Consuelo found AAK on Google and asked if AAK was able to customize hydraulic manifold blocks with complex oil circuits. After communication, we learned that the accuracy not up to standard and the hidden burrs of the hydraulic manifold blocks produced by the original manufacturer wasted him a lot of time. According to the hydraulic manifold block drawings he provided, most machining centers are powerless. I showed him the irregular hydraulic manifolds with multi channels that AAK exported to Russian market previously. Consuelo may have seen hope and requested AAK to make samples. After 50 days, AAK shipped the test order for the hydraulic manifold blocks. 3 weeks later, Consuelo informed us via email that the AAK hydraulic manifold blocks had been approved by their engineers. After more than 2 months of frustration, he finally resolved it. I told him that for any hydraulic manifolds that require attention, contacting AAK, it may not bother you anymore. If AAK cannot handle it, then there is no need to waste time in the Ningbo area. The processing of the hydraulic manifold block with complex oil circuits is carried out by AAK using a 4 axis machining center from Okuma, Japan. One clamping can complete multiple processes, avoiding the personal equation of multiple clamping. The machining accuracy of 4 rotating surfaces is controlled within the same range, avoiding the same valve block with different accuracy. Not only can it automatically change tools, but it also has complete tool functions. On this basis, AAK upgraded the drill bit and equipped it with a Taiwan ZOTO water jet drill bit. The drill is sprayed with Cutting fluid during cutting, which not only cools the tool, but also flushes away the chips to prevent burrs. At the same time, we also added TiALN coating on the surface of the drill bit. Compared with other hard alloy drill bits, the cutting performance is more stable, the surface smoothness of the valve hole is good, and the dimensional and positioning accuracy are much higher than other types of alloy drill bits. The AAK hydraulic manifold block uses a 4-axis + ZOTO water jet drill bit for processing, even the block with complex oil circuits, it is worry free. You can also give it a try. AAK HYDRAULIC VALVES (625) 2023-07-11 https://www.aakindustry.com/info , -detail/hydraulic-manifold-blocks-aak625

A few days ago, Anthony from Spain needed to purchase a hydraulic screw-in cartridge pressure control valve equivalent to HydraForce RV12-26, but with a special requirement for the accuracy of the valve cage. Anthony chose a hydraulic cartridge valve manufacturer in Ningbo China who had cooperated with him for 2 years. However, the accuracy of the valve cage for RV12-26 hydraulic pressure control valve was unstable. The original manufacturer made samples for 3 times and all failed. 2 months have been wasted, and the engineer was very dissatisfied. Anthony was very frustrated. Last week, Anthony browsed the website of AAK hydraulic cartridge valve manufacturer on B2B and left a message: 1. Do you have procedure for RV12-26 hydraulic screw-in cartridge pressure control valve? 2. Can the valve cage of hydraulic pressure control valve be customized with special requirements? 3. Can you ensure that the valve cage of each hydraulic pressure control valve meets the accuracy requirements? After communication, we learned that Anthony encountered a problem with the accuracy of the hydraulic pressure control valve cage when purchasing from the original hydraulic cartridge valve manufacturer. In response to his special requirements, we provided 2 suggestions: optimizing the precision machining of the valve cage and conducting 100% independent testing of the valve cage accuracy. Anthony asked, how does AAK detect the accuracy of valve cages? First, I told Anthony that accuracy is not determined by testing, but rather by precision machining. For valve cage with special requirements, focus on precision machining only cannot avoid potential problem completely. At this point, testing is to eliminate the hidden problem, and the original hydraulic cartridge valve manufacturer may have overlooked this detail. The valve cage of this hydraulic pressure control valve can be precision machined using the TOYODA cylindrical grinder from Japan. The stable grinding accuracy is the best among our experienced technicians, not only high in accuracy, but also stable. Especially low vibration bed and high- precision feed mechanism, combined with specialized cutting fluid, the processed hydraulic pressure control valve cage has a clear contour and a surface finish of within Ra0.2μm, the dimensional accuracy tolerance is within 0.5μm. Regarding the inspection of the hydraulic pressure control valve cage, please refer to the video of our workshop's on-site operation. This is a KEYENCE measuring instrument imported from Japan, which is equipped with a 20 megapixel CMOS laser probe. Before testing, our QC first inputs the size requirements of the valve cage into the program, then places the valve cage into the platform. After starting the equipment, the laser probe starts working, and the valve cage of the hydraulic pressure control valve is imaged 360 degrees by the camera and automatically focuses. The entire contour data of the valve cage can be read in 3-5 seconds, and the program automatically compares. If the accuracy meets the standard, the screen will display green, otherwise it will be red. With this authoritative testing, the defective valve cages are eliminated to ensure that the accuracy of each valve cage delivered is up to standard. Today, we received the trial order from Anthony, who is our third new customer in Spain. AAK hydraulic screw-in cartridge pressure control valve, strictly controlled with 2 processes, you can also give it a try. AAK HYDRAULIC CARTRIDGE VALVES (735) 2023-12-12 https://www.aakindustry.com/info , -detail/pressure-control-valves-aak735

Irek from Russia has placed 6 orders with AAK for hydraulic valve blocks, including ductile iron hydraulic valve blocks, aluminum hydraulic valve blocks, and alloy steel hydraulic valve blocks. 4 months ago, Irek informed us via email that the 5 pcs of ZG20SiMn material hydraulic valve blocks were tested and there were a few residual burrs in the deep holes. No burrs were found in the hydraulic valve blocks purchased from AAK previously. After investigation, I found that the operator was careless during the sample process. AAK is willing to bear all costs incurred in removing the burrs on the hydraulic valve blocks in Russia, then there has been no further news from Irek, but what has come finally is a 100 pcs of repeat order for the hydraulic valve block that was complained. Similar issues have also occurred in our American customers. They only reminded us, and continued to place the orders. For AAK hydraulic valve blocks, cartridge valves, and hydraulic manifolds, I cannot guarantee that every product does not require after-sales service for every customer. However, AAK's advantage in after-sales service is that most of the same hydraulic valve blocks, cartridge valves or hydraulic manifolds from peers or abroad are returned to the factory for repair if they have quality issues. If AAK has quality issues, our customers can resolve them within half an hour, and if the hydraulic components break, they can directly replace them within half an hour. Therefore, we now have high-end customers such as SUN Hydraulics, HydraForce, Skyjack, Honeywell etc. Although AAK is a small company, our positioning is clear. The pain point of products of our peers is AAK's greatest advantage. As I mentioned earlier, AAK focuses on orders from first-class companies in the world. Because a first-class enterprise has a strong technical force and maintenance department, those small problems can be solved easily. Good quality means no after-sales service, and no after-sales service is the best after- sales service. This is also AAK's after-sales definition of hydraulic valve blocks, cartridge valves, and hydraulic manifolds. I am confident in the manufacturing quality of AAK hydraulic valve blocks, cartridge valves, and hydraulic manifolds. Even if AAK encounters quality issues, they are minor issues, easy to maintain, and quick to replace parts. I am thinking that if similar problems occur to poor customers abroad, it will be a big trouble. AAK hydraulic valve blocks will definitely be returned, but after working with a large enterprise, this small problem will be resolved. Poor customers may not have maintenance capabilities at all and do not know much about technology. If there is a problem, whether it's a major problem or a minor problem, he won't solve it or doesn't want to solve it. He will tell you that there is a quality problem, you either send someone to repair it or get it returned. At this time, many hydraulic valve block manufacturers often have no choice. AAK hydraulic valve blocks, cartridge valves, and hydraulic manifolds focus on improving quality, especially manufacturing quality, must be aligned with international first-class brands. This is the only correct development path for AAK at present, and there is no second way to go. Regardless, any manufacturer of hydraulic valve blocks, cartridge valves, and hydraulic manifolds must have good manufacturing quality and benchmark against international first-class brands, and then do business with first-class enterprises. Unfortunately, the vast majority of peers do not see it this way. They focus on orders and prices. AAK hydraulic valve block, no after-sales service, is the best after-sales service. https://www.aakindustry.com/in , fo-detail/hydraulic-valve-block-aak534

Last week, Marc and I talked about a processing detail of hydraulic manifolds. By the way, I asked him why did you choose AAK for your first hydraulic manifold supplier 4 years ago. He just sent me 1 word: trust.   These days, I wonder: What is the core of AAK hydraulic manifolds? Is the manufacturing quality good in China? It must be good. The problem is that your hydraulic manifold is of good quality. How can you make customers think it is really good, and really reliable? I think they finally decided to place order with AAK because they trusted me, so I feel that trust is the key to a deal for the grassroots and our small bosses of hydraulic manifolds.   AAK hydraulic manifold is not a brand. I don't have a brand. It is neither a marketing, I don't study marketing, so I think trust plays a role. Whether brand or marketing, we seem to be pulled away by these words. AAK hydraulic manifolds do business through the Internet. In the end, I feel that it is not marketing, nor brand, but trust.   I want to put trust and reliability first. On the Internet, I never think about brands or marketing. As long as you think about how customers can trust me, you should think in this direction. You should think about the things that can be seen, touched and landed. If you do this well, in fact, the marketing is successful and the brand is gradually emerging. With trust and reliability in mind, instead of brand and marketing, the final goal was to achieve the goal of brand and marketing. Finally, the performance rose, and AAK hydraulic manifolds have been walking in this way.   99% of industrial products have no loyalty and reputation. Have you ever seen anyone hype hydraulic manifolds? AAK business relies on: 1) The hard strength of hydraulic manifold manufacturing quality. 2) The ingenious strength of peripheral innovation. 3) The soft power of online trust. The efficiency brought by trust is the highest, and the influence brought by trust is the greatest. The bonus brought by trust is more high-quality customers. To achieve performance and profit, we can only rely on high-quality customers. There is no second way to go.   The reliability is better than all brands and marketing. The promotion of AAK hydraulic manifolds is to pay less trust tax, and the promotion of AAK hydraulic manifolds is to reap trust dividends.   As for being a person that others can trust, I would like to tell what I saw in a hydraulic manifold factory of my colleague in the same industry yesterday. His assistant knocked on the door and said that he was uncertain about a customer. The customer requested to talk to the boss directly. The colleague said to his assistant: Tell the customer that the boss is not in the office. I hastened to say that you should leave me alone. In fact, I'm not worried about the customer on the phone. I'm more worried about the assistant. The assistant is watching him and learning from him.   Why can't many employees trust their managers? Most of the time, it is not because of big things, but just because of these small things. The dishonest small things that often happen in daily life gradually weaken and erode the credit. Small things are very important. For example, if someone comes to see you, you can make an appointment again if it is inconvenient. You can't tell the assistant that the boss is in a meeting, but actually the boss is not in a meeting. Your employees will always look at such small things.   There is an old saying in China, which is called "like a fish in water". For fish, water exists naturally. The fishes are full of water around them, and they are completely immersed in the water, even without being aware of the existence of water. If water is dry or polluted, fish will realize that water is its most basic need. Without water, fish will die. In business, trust is an indispensable part of transactions, and we rely on it. If polluted or not, we will die.   Without trust, all transactions will fail. AAK Hydraulic manifolds never do such a silly thing. https://www.aakindustry.com/info-det , ail/hydraulic-manifolds-aak394

This morning, Robert sent an email asking about the production time of 1,200 hydraulic check valves, which surprised me a little, because in the past 2 years, he normally just placed small quantity trial orders of hydraulic check valves. Robert is a purchaser of John Finlay company in Australia. We met 2 years ago. A batch of hydraulic tamping machine equipment of their company began to receive complaints again and again from the previous year. After inspection, it was found that the hydraulic check valve in the equipment did not maintain pressure. Robert contacted the original hydraulic check valve manufacturer to find a solution. The manufacturer advised that the working pressure and working frequency of the hydraulic tamping machine may be too high, resulting in frequent collision between the ball valve and valve seat of the hydraulic check valve, affecting the sealing effect. The only solution is to replace the leaked hydraulic check valve. Although replacing the hydraulic check valve is a heavy workload, Robert has no choice but to accept. The trouble is that 6 months later, the same problem happened again. The customer was very unhappy. The boss asked Robert to find a new supplier of hydraulic check valve immediately. Robert suggested purchasing hydraulic check valves from AAK to replace those unqualified ones, because the durability test of AAK hydraulic check valves was the most lasting among all of the samples from different manufacturers at the beginning. At present, there is an equipment installed with AAK hydraulic check valve, which has been used for 1 year but without any abnormality. The boss thought that the price of AAK was more than 20% higher and unacceptable, and asked Robert to look for a new manufacturer of hydraulic check valves. In the process of continuous screening, Robert selected 5 hydraulic check valve manufacturers to try their samples. Basically, after half a year, these hydraulic check valve samples had similar problems one after another. Robert was at a loss. He once again suggested to the boss to purchase AAK hydraulic check valves. After comparing so many hydraulic check valve manufacturers, none of their samples can be used for more than 1 year under this working condition, but the equipment installed with AAK hydraulic check valve has been used for nearly 2 years, and there has been no failure to maintain pressure. If the hydraulic check valve needs to be replaced every 6 months, the after-sales cost is too high, which has far exceeded the 20% higher cost of the hydraulic check valves. More importantly, it brings the reputation of unstable equipment quality to users. After listening to Robert's analysis, the boss approved AAK as the preferred supplier of their company for hydraulic check valves. It took Robert 2 years to persuade his boss to place a large order with AAK. He knew that the durability of AAK hydraulic check valve was more than twice that of other suppliers, and the after-sales cost was also low. How can AAK hydraulic check valve be durable under high pressure and high frequency use? According to the working condition requirements and working frequency of their company's equipment, AAK uses silicon nitride (Si3N4) ceramic ball as the ball valve, which has twice the hardness than steel, lower thermal expansion coefficient than steel ball, good roundness and small friction coefficient. It can resist the corrosion of most chemicals and can still not be worn under the condition of high pressure and high frequency use. The vast majority of hydraulic check valves are steel balls. Because the price of silicon nitride (Si3N4) ceramic balls is more than several times higher than that of ordinary steel balls, it will not be considered for cost saving. However, AAK uses special materials for special needs in combination with working conditions and use frequency, especially what most hydraulic check valve manufacturers are unwilling to do, but AAK likes this challenge most. AAK hydraulic check valves, focused on meeting customer needs. You can also give it a try! https://www.aakindustry.com/info-detai , l/hydraulic-check-valves-aak167

Tarasios is a purchaser from a Greek hydraulic equipment manufacturing company. He has been very smooth in purchasing. At the beginning of the year, their customer customized a hydraulic power unit, and Tarasios chose a supplier that had cooperated for 5 years to make samples for the hydraulic cartridge pressure control valves. The commissioning of the prototype was not smooth. When the load on the pressure reducing branch increased, the pressure at the working port of the hydraulic cartridge pressure control valve increased and there was oil leakage, which affected the pressure maintenance of the oil circuit. They planned to add an accumulator to maintain the pressure, but the customer cannot accept the additional cost. The boss asked Tarasios to purchase the hydraulic cartridge pressure control valve without leakage under high pressure, but the original manufacturer gave up. After seeking other hydraulic cartridge valve manufacturers, it was fruitless. The boss was urging and Tarasios was worried. Tarasios found the website of AAK hydraulic valves on Google, and noticed that AAK has solved problems for customers many times, perhaps he saw the hope and sent us an email to ask: Can AAK make the hydraulic cartridge pressure control valve without leakage under the high pressure? We asked Tarasios to provide the detailed drawings and the system schematic diagram. After analysis, AAK engineers determined that only the original hydraulic cartridge pressure control valve structure is optimized, it can meet the requirement of no leakage under high pressure. Although it cannot be guaranteed to be success for100%, it is 90% confident. After 50 days, AAK sent out 12 hydraulic cartridge pressure control valves. 3 months later, Tarasios sent an email saying that the customer was satisfied with the prototype and was ready to issue a regular order. Their engineers were also satisfied with the function of AAK hydraulic cartridge pressure control valves. When the pressure at the working port increased, there was no leakage. AAK optimized the hydraulic cartridge pressure control valve from 3 aspects, with 3 seals to ensure no leakage under high pressure. 1. The valve body of the hydraulic cartridge pressure control valve is provided with a valve chamber, the side wall of the valve chamber is provided with a liquid outlet, the upper end of the valve body is provided with a seal seat, the upper end of the valve spool passes through the seal seat and is opposed to the spring seat, the lower end of the valve spool is provided with a radially projecting boss, which forms a conical seal with the lower end of the valve body. 2. The valve cover is installed at the lower end of the valve body, and the lower end of the valve spool extends into the valve cover, so that the inner cavity of the valve cover is divided into a liquid inlet cavity and a return cavity. The side wall of the liquid inlet cavity is provided with a liquid inlet, and the side wall of the spring cavity is provided with a vent hole. The outer wall of the seal seat and the inner wall of the upper end of the valve body are sealed through a second seal ring. 3. The valve spool is provided with a throttling channel connecting the valve cavity and the reflux cavity. A throttle port is formed between the valve spool and the lower end of the valve body. The up and down movement of the valve spool controls the opening of the throttle port. The outer wall of the lower end of the valve spool and the side wall of the inner cavity of the valve cover are sealed by a third sealing ring. When the hydraulic cartridge pressure control valve is working, the pressure at the outlet exceeds the pressure set by the regulating spring, and the pressure at the outlet of the valve chamber increases to the point where the valve spool can move up and the throttle between the valve chamber and the inlet chamber is closed, without any leakage. AAK hydraulic cartridge pressure control valve, 3 seals, no leakage under high pressure, you can also try a small order! https://www.aakindustry.com/info-det , ail/pressure-control-valves-aak458

Last Friday, we received 3 emails from Niki, they are all the order for a same hydraulic check valve, but only the ship to address is different. It is the first time for their company to place the orders of 1,500 hydraulic check valves at one time. Niki is a purchaser of a Dutch hydraulic equipment company. Last year, a boarding bridge equipment needed hydraulic check valves. At that time, he planned to purchase from old suppliers. Unexpectedly, after dozens of hydraulic check valves from the initial samples were installed on the boarding bridge and tested for less than a month, the boarding bridge will slowly decline automatically. The engineer judged that the hydraulic system did not maintain the pressure, and it is likely that some hydraulic check valves leaked. However, after disassembling and inspecting the hydraulic check valves, it was found that the matching clearance accuracy of the valve spool and valve sleeve was within the normal range, and there was no jamming. Niki contacted the hydraulic check valve manufacturer, and manufacturer also didn't know why the hydraulic check valve leaked, so they could only replace those leaking hydraulic check valves. Niki is a little worried that if the leakage source of the hydraulic check valve is not found and replaced blindly, there may be a bigger problem later. Niki was not satisfied with the old supplier and had to start looking for new manufacturers of hydraulic check valves again. AAK received message from Niki on our website: what are the reasons for the leakage of hydraulic check valves? I realized that there was a leak in the hydraulic check valves purchased by Niki, but he hasn't found the root cause. After receiving the drawings of hydraulic check valve and the working conditions of boarding bridge equipment provided by Niki, we still can't 100% determine what caused the leakage of hydraulic check valve. We suggest him send us one of the previously leaked hydraulic check valves for analysis. After dismantling, our engineer is 90% sure to understand the root cause of the leakage, but still need to try sample to make it 100% sure. Niki is also willing to allow AAK to make samples according to his hydraulic check valve drawing. One month later, we sent 12 samples of hydraulic check valves to Niki and told him that the leakage of the hydraulic check valves from original manufacturer should be caused by poor details in production. There will be a certain gap between the cap and the thread of the valve sleeve of the hydraulic check valve. How to seal this gap is not only the detail but also the key, especially for the equipment with high working conditions. AAK uses thread anaerobic adhesive, which can completely fill the gap, enhance the sealing or retention force of mechanical connection components, prevent thread loosening and leakage due to vibration between the cap and valve sleeve of hydraulic check valves, and protect the joint from corrosion. Few hydraulic valve manufacturers can operate in this detail of gap sealing. Niki learned about this analysis, and replied that among more than 20 hydraulic check valve manufacturers he contacted, only AAK analyzed the sealing details. He expected to test the function of AAK hydraulic check valve samples. The 3 consecutive emails for orders last Friday should be indicating that the samples of AAK hydraulic check valves have passed the test. Niki specifically stated in the email that the reason why he chose AAK was that every detail of AAK hydraulic check valves was perfect and there was no leakage, so he placed big orders. AAK hydraulic check valves, focused on every detail, you are warmly welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-check-valves-aak166

This year, China's foreign trade data is not impressive, and it seems that the export of hydraulic manifold manufacturers to overseas markets has also been affected. A while ago, colleagues from Ningbo hydraulic manifold manufacturers had a salon where they analyzed the reasons for the foreign trade situation and made attribution.   Hydraulic manifold manufacturer A said that the overall consumption environment is not good, and customer procurement demand has declined. Hydraulic manifold manufacturer B said that the price has not been recognized by the market and a more competitive price is needed. Hydraulic manifold manufacturer C said that the quality of the product is not recognized by customers and there is a need to improve the manufacturing quality of the hydraulic manifolds. In summary, either the price is high, the quality is poor, or the customer purchases less, so the export of hydraulic manifold manufacturers to overseas markets has also been affected. However, have you noticed that many times, what we summarize is not one attribution after another, but one hypothesis after another. To challenge all unverified assumptions and increase the overseas exports of hydraulic manifold manufacturers, we must first understand why business has declined. That is to say, correct attribution. Attribution is a truth that has been verified to be true, false, and logical. And assumption is a possibility based on past experience and probability. Only when hypotheses have been verified one by one can they become attributions. Directly attributing assumptions can result in fatal consequences. All unverified hypotheses should be challenged at least once.   Many times, our assumptions are wrong. And these sounds were originally not difficult to hear. It is because of excessive belief in assumptions that all attributions are isolated from the wall. If hydraulic manifold manufacturers spend more time getting close to customer engineers, perhaps they can find the correct attribution. This is also why hydraulic manifold manufacturer AAK prefers to do online business rather than traditional models, for which as long as the buyer is secured, while online business not only requires stable hydraulic manifold manufacturing quality, but also daily communication, trust building, and interaction with customer engineers. Only such a three-point triangle is stable.   Hydraulic manifold manufacturer AAK, focuses on 3 points and insists on doing online business. AAK HYDRAULIC VALVES (733) 2023-12-10 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak73 , 3

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This week, we launched a hydraulic cartridge logic element benchmark SUN DKFS- XHN. This hydraulic logic element is a normally closed, balanced poppet, switching element. Pilot pressure at port 3 shifts the valve to the open position. Most of hydraulic cartridge valve manufacturers in Ningbo China do not have this model. One of our customers in Brazil checked with 5 hydraulic valve manufacturers in 2 months, but none of them have this logic element. He was very happily to finally find it at AAK. But for it is his first time to do business with AAK, he ordered only 5pcs first last June as the trial order. Today, we received his regular order of 1,000 pcs for this SUN model DKFS-XHN Normally closed, balanced poppet, pilot-to-open logic element. It is said that AAK E-DKFS-XHN has passed the testing in the past year, its quality, function and performance is equivalent to SUN DKFS-XHN. AAK hydraulic logic element 2 major advantages: 1. Manufacturing quality, function and performance benchmark SUN. 2. But the price is less than 70% of SUN. Technical parameters of AAK E-DKFS-XHN Hydraulic logic element: Max.Working Pressure: 350 bar (5000 psi) Flow Rating: 30 gpm/min (120L/min) Min. Pilot Pressure Required to Shift Valve: 20 psi (300 bar) Max. Valve Leakage at 110 SUS (24 cSt): 10 drops/min @5000 psi (0,7 cc/min @350 bar) Pilot Volume Displacement: 0.02 in³ (0,33 cc) Cavity: T-22A AAK hydraulic logic element, benchmarking SUN DKFS-XHN, you can also give it a try. AAK HYDRAULIC VALVES (624) 2023-07-10 https://www.aakindustry.com/info , -detail/logic-elements-aak624

Cuenca is a senior purchaser of AGRIA company in Spain. The boss is very satisfied with his purchasing work. Two years ago, AGRIA company developed a hydraulic equipment, and there were complaints after sales for more than half a year. The main problem was that the starting force of the hydraulic system would be insufficient, which was caused by the increase of internal leakage of the hydraulic check valves in the equipment. After Cuenca contacted the original hydraulic check valve manufacturer, the manufacturer said that some hydraulic check valves may have deviation during assembly, and he was willing to replace the hydraulic check valves with large leakage with new ones. Cuenca thought it was completely solved after replacement, but what surprised him was that less than a year after the new hydraulic check valve was replaced, the same problem occurred again. The boss was very disappointed with his purchase of hydraulic check valves this time. The manufacturer of the original hydraulic check valves still said that except for replacing the hydraulic check valves, there is no other way. Cuenca began to worry that if the same problem happened a third time, it would be too shameless. To be safe, he began to look for a new supplier of hydraulic check valves and began to test samples. At the same time, he also wanted to know why the hydraulic check valves produced by the original manufacturer leaked. In this way, Cuenca contacted AAK hydraulic valve. After several rounds of communication with Cuenca, we learned the story between him and the original manufacturer of hydraulic check valves, and suggested him to send us the hydraulic check valves with problem and provide us the drawings of hydraulic check valves at the same time. AAK engineer disassembled the hydraulic check valves of the original manufacturer and found that there were wear marks on the sealing line on the surface of the poppet valve. When the pressure oil reversely enters the hydraulic check valve, the cone cannot strictly seal the oil and cause leakage, and some oil flows out of the oil inlet. After receiving AAK's analysis, Cuenca asked us to make 4 samples of hydraulic check valves according to his drawings. Our engineers designed a new hydraulic check valve according to the service frequency and working conditions of the equipment, replacing the cone valve with the ball valve. The cone valve is prone to fatigue creep deformation and wear after working for a long time, resulting in a gap between the valve sleeve and the cone, resulting in leakage. The outer circle of the ball valve can contact the inner taper ring line, and the connecting hole can be closed to reduce the leakage caused by wear. Cuenca was surprised that AAK dared to take the initiative to modify the drawings of their hydraulic check valves, and expected to see the sample performance of AAK hydraulic check valves. Two months later, AAK sent samples of the newly designed hydraulic check valves. A year later, Cuenca said that the hydraulic equipment equipped with AAK hydraulic check valves had no complaints about startup. He was glad that the original hydraulic check valve manufacturer replaced it again and again, which could only guarantee the service for half a year, but AAK solved the problem one time. In only 2 months, AAK helped solve the problem of leakage in the hydraulic check valves that plagued Cuenca for nearly 2 years. Cuenca would rather give up the original supplier who has cooperated for many years than choose AAK hydraulic check valves. AAK hydraulic check valve, valve spool design is unique and different, welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-check-valves-aak165

Bauer is from Brazil and has purchased hydraulic cartridge valves from AAK 6 times. In the second half of last year, they developed a drilling equipment. The hydraulic pressure control cartridge valve used on the equipment was sampled from a local hydraulic cartridge valve manufacturer in Brazil. The equipment commissioning was not smooth, and the impact of the drilling rig during startup and shutdown is large, which is not acceptable to the customer. The root cause is the unstable unloading of the hydraulic pressure control cartridge valve after overloading. The original hydraulic pressure control cartridge valve manufacturer stated that it was manufactured according to the drawings and its accuracy reached the standard. Bauer was helpless. Bauer contacted me and emailed me asking if AAK can produce a hydraulic pressure control cartridge valve with stable unloading after overloading, especially during equipment startup and shutdown. After communication, I learned the dilemma that Bauer encountered with the original hydraulic cartridge valve manufacturer. After discussion, AAK engineers gave the solution to the hydraulic pressure control cartridge valve, and Bauer asked AAK to make samples. After 45 days, AAK sent 10 hydraulic pressure control cartridge valves. 1 month later, Bauer informed us by email that AAK hydraulic pressure control cartridge valve was installed on the drilling rig, with minimal impact during startup and shutdown. Their equipment prototype had been delivered to the customer, and he was confident that the customer would place a batch order. AAK hydraulic pressure control cartridge valve not only achieves stable unloading after overloading, but also reduces impact. These are 2 advantages compared with the Brazilian hydraulic cartridge valve manufacturer. AAK hydraulic pressure control cartridge valve can adjust the annular orifice, the first and second orifices to achieve buffering and smooth operation of the equipment under various working conditions. AAK optimized the hydraulic pressure control cartridge valve in the following ways: 1. The hydraulic pressure control cartridge valve sleeve is provided with an oil return port and an oil discharge port, and a valve seat with a through hole is fixed. The valve spool is covered with a spring, and there is an oil passage inside the valve spool. The lower end of the valve spool is a tapered end. 2. The upper end of the valve spool extends into the valve spool sleeve, which is housed in the adjusting seat with a screw plug inside and a lock nut outside. Threaded connections are used between the lock nut and the adjusting seat, between the adjusting seat and the valve sleeve, and between the screw plug and the adjusting seat. 3. The screw plug cooperates with the valve spool sleeve to form a second oil chamber. The valve spool sleeve has two throttle holes and an annular throttle hole. The valve spool cooperates with the valve spool sleeve to form a first oil chamber. The lower end of the valve spool has an outer circumferential surface and a column that matches the inner wall of the valve sleeve. AAK hydraulic pressure control cartridge valve has 2 advantages over Brazilian hydraulic cartridge valve manufacturer. You can also give it a try! https://www.aakindustry.com/info-detai , l/pressure-control-cartridge-valves- aak533