Valves

Today, we launched a Hydraulic Pressure Reducing/Relieving Valve E-PRDB, which is equivalent to SUN standard part PRDB, including PRDB-LAN, PRDB-LBN, PRDB- LDN. This Direct acting concept provides highly reliable operation in contaminated systems, especially at dead headed conditions. Direct operated version offers superior dynamic response compared to equivalent pilot operated models. This Direct-acting, pressure reducing/relieving valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). These valves incorporate a damped construction for stable operation allowing the use of high reduced pressure. AAK E-PRDB hydraulic Pressure Reducing/Relieving Valve 2 Selling Points: 1. Internal leakage: 2 in³/min., benchmarking SUN Hydraulics 2. Service life is 2 times that of domestic peers Technical parameters of AAK E-PRDB Hydraulic Pressure Reducing/Relieving Valve: Max. Operating Pressure: 350 bar (5000 psi) Flow: 10 gpm (40L/min) Internal Leakage: 2 in³/min. Temperature: - 35 to 120 °C (with Standard Buna N seals) Cavity: T-11A  The newly launched AAK E-PRDB Hydraulic Pressure Reducing/Relieving Valve, benchmarking 3 models of SUN PRDB Series. You can also try a small order. AAK HYDRAULIC VALVES (574) 2023-05-01 https://www.aakindustry.com/info , -detail/pressure-reducing-valve-aak574

Achilleus is from Greece. In the second half of last year, a high-pressure hydraulic winch sold by his company for less than 3 months, was unable to rise and fell suddenly during construction, which almost caused a safety accident. The on-site investigation found that an oil pipe in the hydraulic system was broken and leaked oil. After the oil pipe was replaced, the equipment was restored. But 2 months later, similar problems repeated. The customer couldn't stand this series of problems and complained to the boss. The boss was angry and asked the technical team to solve it completely within 1 month. Achilleus also felt the pressure of the boss and contacted several factories to inquire, but there was no result. Achilleus saw AAK on Google and sent an email asking with a try attitude, and attached the hydraulic schematic diagram. After analysis, AAK engineers found that the probable reason was that the oil pipe burst was caused by the energy conflict between the hydraulic counterbalance valves in the system and the flow control of the system. We informed Achilleus of the analysis results the next day and recommended that AAK make the samples directly. We will redesign the hydraulic counterbalance valve according to the energy principle of the hydraulic system. 3 days later, Achilleus placed the sample order for 10 hydraulic counterbalance valves and also paid the development cost. After 45 days, AAK sent the samples. Last week, Achilleus sent an email to express his thanks. After using the hydraulic counterbalance valves redesigned by AAK, the hydraulic winch has been running stably for half a year, and the customer is also very satisfied. The boss praised him, too. Their engineers admire the design ability of AAK and suggest Achilleus to take AAK as the preferred supplier of hydraulic counterbalance valves. AAK unique designed hydraulic counterbalance valves, with triple safety protection, customers no longer worry about the burst of the oil pipeline of the hydraulic system. 1. AAK changed the flow control groove of the hydraulic counterbalance valve, and redesigned small flow control groove. The maximum working pressure can reach 420bar, realizing zero leakage load maintenance. Even if the oil pipeline bursts, the load will not be out of control. 2. The working mode of the hydraulic counterbalance valve designed by AAK is similar to a two position flow controller with compensation, which can realize the curve of different forms of flow decreasing with the increase of load pressure, so that the control tank with small flow can realize the optimization of control. 3. According to the characteristics of this winch hydraulic system, the hydraulic counterbalance valve designed by AAK has different damping combination configurations, so as to ensure the stability of the winch hydraulic system. AAK hydraulic counterbalance valves, unique design, welcome to have a try! https://www.aakindustry.com/info-detai , l/hydraulic-counterbalance-valves-aak301

Yobachi, from Kenya, has not been working for a long time as a purchaser, and encountered difficulties in the hydraulic directional control cartridge valve. After 6 months of use, their hydraulic power unit has unstable operation. During after-sales checking, it was judged that that the main seal of the hydraulic directional control cartridge valve is worn, causing leakage and equipment failure. However, the hydraulic directional control cartridge valve manufacturer said that it had been nearly 1 year since the shipment, and he needed to purchase new ones again. Yobachi explained that taking the time on the delivery, transportation, assembly, equipment commissioning and inventory into account, the actual service life of this batch of hydraulic directional control cartridge valves was only 6 months. The boss was not satisfied that Yobachi had found an unreliable manufacturer. He had to re-purchase the hydraulic directional control cartridge valves with a service life of more than 1 year without leakage. Yobachi was under pressure. Yobachi left a message on our website: 1. I browsed the AAK cartridge valve website on Google. 2. Can AAK hydraulic directional control cartridge valve have zero leakage? And the service life is more than 1 year? 3. What is the time and cost of customizing the hydraulic directional control cartridge valve? This is the first time that AAK received an inquiry from Kenya about hydraulic cartridge valves. I was a little cautious. After communication, it was learned that he had met with an unreliable hydraulic cartridge valve manufacturer, which made him very passive with the boss and customers. According to the system hydraulic schematic diagram and the original drawing of the hydraulic directional control cartridge valve provided by him, after the analysis, AAK engineers found that it is not difficult to make this hydraulic directional control cartridge valve as zero leakage. Yobachi seemed a little unconvinced. I told him that in 2022, AAK customized 67 non-standard hydraulic cartridge valves for customers, and made samples of total 112 models of cartridge valves for new and old customers. Till now, there are no quality complaints. After 7 days, Yobachi requested AAK to make samples. After 40 days, AAK sent 20 samples of hydraulic directional control cartridge valves. 3 weeks later, Yobachi only told us that the equipment installed with AAK hydraulic directional control cartridge valve operated stably, and there was no further news. On the first working day after our CNY holiday, he sent an order for 380 hydraulic directional control cartridge valves. He said that AAK hydraulic directional control cartridge valve has been in use for more than 1 year, without leakage, and the equipment performance is more stable. The boss asked him to purchase in batches. The leakage of the original hydraulic directional control cartridge valve is mainly caused by the wear of the main seal, which leads to the leakage of the pilot hole. The cover plate, valve spool, valve cage, O-ring, guide rod and valve body of the pilot hole are all tricky. It is not difficult to make it zero leakage, AAK improved the original structure of the hydraulic directional control cartridge valve from 3 aspects: 1. The cover plate and valve body are connected by screws, the valve cage is inserted in the valve body, the valve spool is installed in the valve cage, the valve spool is located under the cover plate, and the bottom surface of the valve spool cavity is equipped with a return spring. 2. The inner wall of the valve spool is installed with a sealing ring that can prevent the leakage of the pilot port. The main seal adopts a soft and hard composite seal structure. The O-ring is installed on the valve spool guide cylinder, and the O-ring prevents the oil from flowing back to the tank from the pilot hole. 3. The main seal of the hydraulic directional control cartridge valve adopts a soft and hard composite seal structure to prevent leakage at the pilot hole and the main seal. AAK hydraulic directional control cartridge valve, no leakage, you can also try it! https://www.aakindustry.com/info-de , tail/directional-control-cartridge-valves- aak4 , 91

Titan comes from Türkiye, and does not purchase many hydraulic cartridge pressure control valves from AAK. In February of this year, he had an inquiry for a model of HydraForce hydraulic cartridge pressure control valve PS10-36. Titan felt that the price of AAK was high and chose another hydraulic cartridge valve manufacturer in Ningbo China. Last month, he came to me again for the same model PS10-36 and needed 400 pcs. After communication, it was learned that last time, the delivery of the hydraulic cartridge pressure control valves from the original manufacturer was delayed by 2 weeks, which made him very passive with the customer. The quantity of the hydraulic cartridge pressure control valves has been increased this time, and he is not sure about the delivery time of the original manufacturer. The 400 pcs of hydraulic cartridge pressure control valves benchmarking HydraForce PS10-36 needs to be delivered within 20 days. From material procurement to shipment, there should be no more than 5 hydraulic cartridge valve manufacturers in Ningbo that can complete within 20 days, unless the manufacturer has more than 300 pcs of hydraulic cartridge pressure control valves in stock, but there are not many manufacturers in Ningbo that dare to produce large quantities of inventory. I told Titan that AAK can complete the delivery of 400 pcs of hydraulic pressure control valves PS10-36 in 20 days, because of 2 advantages. Firstly, there is some inventory in the warehouse, and secondly, AAK's unmanned workshop produces this model, which can increase the production efficiency by more than 40% compared to the original manufacturer. Yesterday, the 400 pcs of hydraulic cartridge pressure control valves were delivered to Titan on time. Without comparison, there is no harm. I believe that the uniqueness of AAK this time will stimulate Titan to give AAK more and more inquiries for hydraulic cartridge pressure control valves. For this hydraulic cartridge pressure control valve PS10-36, AAK are equipped with a fully automatic CNC machine tool from Japan Tsugami, along with self- developed fixtures, to achieve an unmanned production process. Its servo drive and multi axis linkage ensure accuracy and avoid human error. Only the program settings need to be in place, but the equipment manual cannot be mechanically copied. Our technicians set the processing parameters according to the engineer's programming, implant the valve cage into the bracket, and after starting the equipment, there is no need for manual labor. The clamping arm automatically clamps the valve cage into the machine tool fixture, and the machine tool starts working. As long as there is a blank part on the bracket, processing will not stop. Most hydraulic cartridge valve manufacturer rely on manual clamping, resulting in slow processing and human error in accuracy. 1. AAK adopts Japanese military industrial CNC machining centers, and I don't know which hydraulic pressure control valve manufacturers in Ningbo have more efficient equipment than this. 2. The quality is equivalent to HydraForce and is stable, and AAK dares to make inventory levels that its peers dare not do. 3. Unmanned production workshop, with an efficiency 40% higher than most hydraulic pressure control valve manufacturers in Ningbo. AAK hydraulic cartridge pressure control valve, with a delivery time of 40% faster, reliable and stable quality, welcome to give it a try! AAK HYDRAULIC CARTRIDGE VALVES (671) 2023-09-14 https://www.aakindustry.com/info , -detail/hydraulic-pressure-control-valves- aak6 , 71

Kuplin is from a Russian hydraulic equipment manufacturing company, he has purchased hydraulic valve blocks from China for a long time, which is also relatively smooth. However, a hydraulic valve block he purchased at the end of last year put him into a hard situation. A batch of hydraulic climbing cars sold by their company were complained by customers. During the routine maintenance of the hydraulic system, several cartridge valves on several equipment cannot be taken down, the nose end is stuck in the socket of the hydraulic valve blocks, and there is a small amount of leakage around the socket. The hydraulic valve block manufacturer replied that when processing the hydraulic valve blocks, the technician processed the nose end of the socket into a conical surface, which made it easy to install and difficult to take down, and also affected the seal, resulting in a small amount of leakage. The hydraulic valve block can be replaced free of charge, but no one will bear the loss of those hydraulic cartridge valves that cannot be disassembled. After the boss learned that, he asked Kuplin to find a new manufacturer of hydraulic valve blocks. Kuplin contacted more than 10 new factories and required that there was no abnormality in the processing of valve holes of each hydraulic valve block. After a round, he did not find any suitable supplier of hydraulic valve blocks. Kuplin began to worry. By chance, Kuplin met his old friend Petrov and learned about AAK's ability to process hydraulic valve blocks during the communicating with each other. After several communications with him, AAK started to make samples directly. 1 month later, AAK sent the hydraulic valve blocks. Petrov informed by email that their engineer specially inspected each valve hole, and the tolerance was controlled 100% without deviation. He wanted to know how AAK achieved it? AAK hydraulic valve block has no deviation from the processing of the installation socket, is due to 3 strict points: 1. For tool inspection, it is in the charge of a specially assigned person, who regularly inspects each tool equipped in each machining center to confirm whether there are cuts or cracks on the leading edge of the tool, so as to avoid the problem of machining finish caused by tool wear or damage. 2. Clean the cutter. AAK uses a diamond file to remove the debris of the cutter material and ensure that the positioning shoulder on the reamer remains sharp. AAK will check the size of the ground tool based on the tool positioning shoulder to ensure that the depth and diameter meet the processing requirements. 3. After machining, use diameter gauge and thread gauge to check the dimensional accuracy according to the requirements of the socket drawing, and carry out the final socket dimensional check. Especially, the nose part of the cartridge valve socket will be measured from the front end of the nose to the supporting end of the nose, so as to ensure that there is no cone at the nose. AAK hydraulic valve block is easy to install and take down without deviation, and 100% free of burrs. You are welcome to have a try! https://www.aakindustry.com/info-detai , l/hydraulic-valve-blocks-aak300

Palencia is from Spain and has little cooperation with AAK. Some time ago, he emailed us to discuss about the blind hole of hydraulic valve blocks. After several rounds of email communication, it was learned that in the second half of last year, Palencia tried samples with more than 10 hydraulic valve manufacturers because the blind hole quality of the hydraulic valve block was not up to standard. The samples of the hydraulic valve blocks either had a bell mouth in the blind hole, or the surface roughness of the hole wall was not up to standard. It wasted him 4 weeks before and after, moreover, the development fees paid were not refund, which made him very depressed. According to the drawing of hydraulic valve block provided by Palencia, the processing difficulties are mainly concentrated in the blind hole. The processing hole diameter of this hydraulic valve block is small, and the depth is more than 40mm. Only the cutter bar with slender shaft can be used, but the cutter can not all pass through the hole, resulting in easy deformation of the inner hole diameter and axial taper and ovality. In this way, the bell mouth is easy to appear at the hole depth of 10 ~ 20mm, and the surface roughness of the hole wall can not be guaranteed, too. AAK innovated the technology 3 years ago for the difficulties of blind hole processing of hydraulic valve blocks. I directly replied to Palencia that this is a difficult processing, but it is not difficult for AAK. You can directly test the order. If our goods does not meet the requirements of the drawings, the development fee can be refund. 4 weeks later, AAK sent 5 samples of hydraulic valve blocks. 2 months later, Palencia placed the annual order of 600 hydraulic valve blocks, with goods shipped every 2 months. Their engineers were surprised why AAK succeeded in making samples at one time, while all other hydraulic valve manufacturers failed previously? For the processing of small and deep blind holes in the hydraulic valve blocks, most hydraulic valve manufacturers cannot meet the high-precision requirements, while AAK has a high-precision CNC processing center imported from Switzerland, and adopts the technology of extruding holes with a patented bladed extruding knife independently developed by AAK. And this processing method has 3 advantages. Most hydraulic valve manufacturers are difficult to master this technical detail in operation, but AAK mastered it 3 years ago. 1.The blind hole of the hydraulic valve block adopts a bladed extruding knife. Through longitudinal feeding, a moderate extruding force is applied to the workpiece surface, and then through the rotation of the knife or workpiece, the height difference between the crest and trough of the knife mark is reduced, and the surface roughness is optimized. 2.During the processing, the hole surface produces slight cold work hardening, which improves the physical properties of the blind hole surface and improves the hardness and wear resistance of the blind hole surface. 3.After machining, the roughness of the hole can reach Ra value of 0.8 ~ 0.4μm. The ovality circle error is 0.01 ~ 0.02mm, the taper error is 0.01 ~ 0.025mm, and the dimensional accuracy of the hole can be controlled within 0.01mm. AAK hydraulic valve blocks, blind hole processing with unique skills, and also with 3 types of pressure test standards to guarantee quality, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-valve-blocks-299

Fabian from the Netherlands left a message on AAK website last month: what is the reason for the hydraulic direction control valves stuck? In general, the processing roughness of valve spool and valve hole is poor, or it is caused by radial unbalanced hydraulic pressure caused by inconsistent coaxiality. AAK adopts mirror grinding for the finishing of valve spool and valve hole, and the surface roughness can reach AO=Ra0.08μm, which is more than 10 times that of its peers. According to Fabian, in the second half of last year, the hydraulic directional control valves of the trial order got stuck, which made them very anxious. Thia hydraulic directional control valve is used on the hydraulic power unit. After the equipment is commissioned and operated continuously for 48 hours, the pressure supply of the equipment is abnormal. The engineer disassembled and found that the contact surface between the valve spool and the valve hole of the hydraulic directional control valve is too rough, so the hydraulic directional control valve needs to be replaced, and the surface roughness is required to reach AO=Ra0.5μm or below. The original manufacturer fed back that the roughness of valve spool and valve hole Ra1.0μm was their limit. Fabian was very depressed and had to find a new manufacturer of hydraulic directional control valve. Fabian contacted more than 10 factories, and none of them confirmed that the RA of the contact surface between the spool and the valve hole of the hydraulic direction control valve can be controlled at 0.5μm. They also told that it was not necessary to control the Ra value when it was stuck, and Fabian would have no direction. He found AAK Hydraulic Valves and left a message to ask the reason why the hydraulic directional control valve was stuck. According to Fabian's description and the drawing of this hydraulic directional control valve, I think their engineers' new requirements for Ra value are reasonable. AAK is able to control Ra value well. We recommended that Fabian directly test the order. If our Ra value does not meet the standard or the hydraulic directional control valve is stuck, we can refund it in full. After 35 days, AAK sent 10 samples of hydraulic directional control valves. Two weeks later, Fabian informed by email that no abnormality was found during the commissioning of the AAK hydraulic directional control valves. Their engineers specially detected the Ra value of the contact surface between the valve spool and the valve hole, and were surprised that it is Ra0.08μm, which is more than 10 times more accurate than that of peers, and more than 6 times what they require. The surface finish of the valve spool and valve hole directly determines the flexibility of the hydraulic direction control valve, and most hydraulic valve manufacturers tend to ignore this small detail in the processing process. AAK hydraulic direction control valve spool and valve hole are precision machined with the NP520X-F full-automatic universal grinder of Japan's Long Island Precision grinding machine, which can achieve μ level feed mirror grinding, the surface of the machined valve spool is like a mirror. AAK hydraulic directional control valves, no jamming, you can also have a small try! https://www.aakindustry.com/info-d , etail/hydraulic-directional-control-valves- aak , 298

Last month, a Brazilian hydraulic valve customer informed me that due to domestic political reasons, they had stopped importing hydraulic valves. I was a bit surprised at the time, as he had been purchasing hydraulic Sequence Valves from AAK. Two weeks later, it was learned that this hydraulic valve customer had applied for bankruptcy. Fortunately, the hydraulic Sequence Valves supplied by AAK are all prepaid. It was heard that the other two hydraulic valve manufacturers in Ningbo have over 70,000 US Dollars of payment for hydraulic Sequence Valves not recovered. Lucio and I met 3 years ago. After purchasing hydraulic Sequence Valves from AAK for a period of time, he asked me to accept a TT NET 60 days of payment terms, but I politely declined, then he moved a portion of the hydraulic Sequence Valve orders to peers in Ningbo, with several high-precision hydraulic Sequence Valves continuing to be purchased from AAK. When Lucio initially discussed the payment terms with me, he confidently said, "I won't owe you any money, even if the finance department runs out of money, I will pay you for the hydraulic Sequence Valves”. I hesitated a bit, but on second thought, what kind of guarantee should I use? After all, this is not his personal business, but the company's business. Last week, my aunt came to borrow money from my mother because my cousin borrowed an online loan. If she doesn't repay it, there will be big trouble. My aunt hopes her elder sister can lend 500,000 yuan to her. My aunt cried and said, 'I want to save my son even I bankrupt myself. '! I know my cousin's addiction to gambling, which is a bottomless pit. 2 years ago, my aunt had already repaid my cousin's gambling debt of over 200,000 yuan. Now, his behavior repeated again and borrowed online loan unexpectedly, and all his bank cards have been overdrawn, creating a hole of 500,000 yuan. My mother doesn't have much money in her hands. Seeing that her younger sister is pitiful, she wants me to help my cousin. My aunt asked me to believe in her. She will return money definitely. My mother certainly believes in her sister and is willing to guarantee this loan. I asked my aunt when to return it? Aunt said: 5 years at most! I answered: Of course I believe in you, but do you believe in me? If you believe me, my cousin has a property with a market value of 600,000 yuan, but now the property is not very prosperous. If you are eager to sell it, it will be 500,000 yuan. I can lend my cousin 500,000 yuan, but he must transfer the property to me. When he returns the money to me, I will transfer the property back to him. Even if the price of the house has increased, and I don't want any more money. Even if the ownership is transferred to me, I don't need rent. If he doesn't pay back in 5 years, then I'll sell this house! I asked my aunt to go back and discuss with my cousin. My aunt cried and said, 'If the house is gone, what will he do in the future?'? This won't work. Even if your cousin doesn't pay you back, I will definitely pay you back if I smash the pot and sell iron! I said to my aunt: I understand, you are preparing to smash my pot and sell my iron! Do you think my money was brought by the wind? If you don't agree to this plan, then we don't have to talk about it! This is also a unique feature of China, where one likes to borrow money from others and vows to repay by smashing pots and selling iron, but there is no guarantee. Many times, doing business and living are the same feeling. Without effort or trust, how to close a hydraulic Sequence Valve deal? The payment of customers is also the same. Customers who pay attention to quality often make payments easily, which is what they say and do. AAK HYDRAULIC VALVES (573) 2023-04-30 https://www.aakindustry.com/info , -detail/sequence-valves-aak573

What is the value of hydraulic valve manufacturers? How should I view the business of my company?   The starting point of all businesses is to benefit users. To benefit users is to provide "value" and "benefits" to users. When our R & D department wants to develop a new hydraulic valve, I ask them to know what function is very important, but also to figure out what users want, and creatively meet their needs.   The core responsibility of the operator of the hydraulic valve manufacturer is to seek the potential. Potential energy is to find the enhanced circuit of enterprises and businesses and make the flywheel rotate. How do I find the enhancement circuit of AAK Hydraulic Valves?   As an operator of hydraulic valve manufacturers, the most important core for me is reputation. But what is driving the improvement of "reputation"? Daily articles about the difficult and miscellaneous problems of hydraulic valves, such as how to help customers solve the problems that peers can't solve. So, what is driving the emergence of articles? Professional skills, on paper, will only be laughed at. It must sink into research and development, innovation, production, materials, equipment, technology, to analyze specific situations and solve specific problems, so as to be professional. However, what is promoting the accumulation of "professional skills"? Reputation. Only with an excellent reputation, can there be many high-quality hydraulic valve customers, allowing you to accompany, so that you can gain a lot of knowledge and practice. Did you find it? "Reputation - (+) > professional skills - (+) > Article - (+) > reputation", an enhancement loop, surfaced.   When I draw my flywheel, I am a very clear standard in my heart. I decided not to do anything other than pushing the flywheel. As long as it's not pushing the flywheel, don't do it. Once, an old customer introduced me to an Indian customer who can purchase 1,800 hydraulic valves every month. I was very moved, but I declined this Indian customer. Because the hydraulic valves he needs to purchase are very common market goods, and most hydraulic valve manufacturers can do it well. Helping him solve the supply of hydraulic valves may not help me improve my reputation. In terms of customers, we are the supplier of HydraForce for 9 consecutive years, which has improved my reputation. This is on my flywheel.   The essence of business is transaction, and in the transaction, you can only exchange something with the value you provide. For example, if you offer something worth 100 yuan, theoretically you can only get back 100 yuan. If you occasionally get more money than the value you offer, it will be taken away one day. Any transaction is not just completed one time.   Hydraulic valve trading is also to exchange commodities for money. The manufacturer takes the hydraulic valve, the customer takes the money, and we will exchange it. However, I think there is a more advanced transaction before this transaction. This transaction is not to exchange goods for money, but to exchange content for time. For example, I wrote an article on hydraulic valves, and then you spent some time here because you were attracted by the content of AAK Hydraulic Valves. The transaction of exchanging goods for money actually takes place in time. For example, you take time to watch my short video, in which I introduced a hydraulic valve, and then you came to inquire.   The first transaction is actually the soil of the second transaction. Only when it occupies the customer's mind or time first, it is possible to trade goods with him. However, the vast majority of hydraulic valve manufacturers only pay attention to the second transaction and look everywhere for the transaction of commodity for money. AAK Hydraulic Valves constantly release content, so that more customer cases can help those customers who have suffered losses in purchasing hydraulic valves, so as to consolidate the trust of AAK.   AAK Hydraulic Valves, only for reputation. https://www.aakindustry.com/inf , o-detail/hydraulic-valve-manufacturers-aak297

Zimraan, from Türkiye, had trouble purchasing hydraulic screw-in cartridge valves from Ningbo China for the first time. In April of this year, they needed to purchase a hydraulic screw-in cartridge valve equivalent to HydraForce FC12- 20. With the suggestion of colleagues, he chose a hydraulic screw-in cartridge valve manufacturer in Ningbo and placed the order for 100 pcs directly. They made a spot check in Türkiye and increased the working pressure by 5-10%. They found that a small number of hydraulic screw-in cartridge valves were leaking. The engineer believes that the accuracy of the valve spool component is not up to standard or caused by small scratches, but the original hydraulic screw-in cartridge valve manufacturer believes that it is caused by excessive pressure. Zimraan was helpless and could only inspect the hydraulic screw-in cartridge valves from the original manufacturer one by one. For those with leakage, he had to re-purchase. Zimraan saw on Google that AAK has been a hydraulic cartridge valve supplier for HydraForce for 9 consecutive years, leaving a message: 1.Does AAK have a hydraulic screw-in cartridge valve equivalent to HydraForce FC12-20? 2.If pressurized by 5-10%, will the hydraulic screw-in cartridge valve leak? 3.What is the delivery time for 36 pcs of hydraulic screw-in cartridge valves? Based on his message, I determined that there was a problem with the internal accuracy of the hydraulic screw-in cartridge valve. After communication, I learned that he encountered a problem when purchasing hydraulic screw-in cartridge valves from Ningbo for the first time. AAK's judgment is consistent with his engineer. Due to time constraints, he requested AAK to ship 36 pcs of hydraulic screw-in cartridge valves directly. 3 weeks later, Zimraan informed us that they still pressurized by 5-10% and tested AAK hydraulic screw-in cartridge valves, and there were no leaks in all 36 pcs. I told him that only internal accuracy is guaranteed, and each hydraulic screw-in cartridge valve can pass pressure testing. How to ensure internal accuracy? Precision machining is the core, and most hydraulic cartridge valve manufacturers may not fall behind in this stage. However, not every manufacturer is performing precision testing on each valve spool component, or performing it properly. Before assembling, AAK hydraulic screw-in cartridge valve spool components must undergo a precision manual pressure measuring instrument. No matter the sealing performance, surface roughness, small scratches, etc. of the valve spool components, any problem can be discovered. First, install the valve spool assembly into the valve cage, then place it into the test valve block, turn on the pressure measuring instrument, and set the 15 second pointer dynamic diagram. Start squeezing the airbag. When the instrument pressure gauge reaches the specified pressure, focus on whether there is any change in the pointer of the pressure gauge. If there is no change in the pressure gauge pointer within 15 seconds, it indicates that the accuracy of the valve spool assembly meets the standard. Here is another tip, the setting of the 15 second pointer dynamic graph. Most manufacturers' testers rely solely on the instrument manual for testing mechanically. AAK hydraulic screw-in cartridge valve, with meticulous testing and guaranteed accuracy, Welcome to give it a try! AAK HYDRAULIC CARTRIDGE VALVES (670) 2023-09-12 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak670

The original cartridge valve manufacturer could not improve the cone hole roundness and surface roughness of the hydraulic cartridge relief valve. AAK used 3 skills to ensure that the cone hole roundness of the hydraulic cartridge relief valve was within 0.003, the surface roughness was Ra0.6, and it was linear sealed, without leakage, helping Salim out of the after-sales trouble that has stumped him for in 3 months. Salim is from Chile. A batch of hydraulic cylinders of their company have been complained by customers that they are unstable. After checking, it was found that the hydraulic cartridge relief valve was leaking, which caused the abnormal operation of the oil cylinder. The root cause was the roundness of the cone hole and the surface roughness. The engineer requires to replace the hydraulic cartridge relief valve, and the cone hole roundness is within 0.005, and the surface roughness is below Ra0.8, which can completely solve the hidden danger. The original manufacturer of the hydraulic cartridge relief valve said that the new requirements is 50% higher than before, but he was willing to try. He made samples twice, but still failed to meet the standard. 3 months passed without any result. The customer was unhappy and Salim was worried. Salim contacted me under the introduction of AAK's old customer Robert. According to his introduction above, the parameter requirements alone are not a big problem, but the internal structure of the original hydraulic cartridge relief valve should be considered. Our engineer reviewed his drawings and the anatomical drawing of the original hydraulic cartridge relief valve manufacturer, and came up with the plan 2 days later. Salim asked AAK to make samples. After 35 days, AAK sent 12 hydraulic cartridge relief valves. 3 weeks later, Salim emailed that after replacing the hydraulic cartridge relief valve of the original manufacturer, the hydraulic cylinder worked normally. At the beginning of last month, Salim sent a PO for 240 hydraulic cartridge relief valves. 8 months later, the customer no longer complained about the hydraulic cylinder. His boss was very satisfied with the accuracy of AAK hydraulic cartridge relief valves. The taper hole roundness was within 0.003, the surface roughness was Ra0.6, and it was linear sealed and leak free. All their hydraulic cylinders in stock should be replaced with AAK hydraulic cartridge relief valves. AAK engineers improved the processing technology with 3 skills for the internal structure of the hydraulic cartridge relief valve: 1. The valve seat of the hydraulic cartridge relief valve shall be turned. First, rough holes shall be drilled. The rotation speed of the drill is 1500~1800r/min, and the feed speed is 140~160mm/min. Then, the bottom hole of the thread shall be machined at the bottom of the rough hole. In the middle section of the rough hole, an enlarged hole shall be machined with a boring cutter. 2. Finish the top of the rough hole with a milling cutter to form a tapered hole, and then grind the enlarged hole with an internal and external grinder. 3. Use self-made grinding tools to grind and polish the top of the tapered hole in 2 ways: low speed, fast feed, low speed and slow feed. The coaxiality between the column bar in the middle of the tool and the top cone surface is strictly controlled within the range of 0.003~0.005. AAK hydraulic cartridge relief valve, there is unique skill to process, you can also try a small order! https://www.aakindustry.com/info-det , ail/cartridge-relief-valves-aak419

Evander is from a hydraulic equipment manufacturing company in Greece. He has been in purchasing for 3 years smoothly. Last March, they tested a hydraulic power unit. The hydraulic pressure control cartridge valve used was from a local manufacturer. During equipment commissioning, the operation was unstable. The sensitivity of the hydraulic pressure control cartridge valve port became dull under the influence of oil pressure in the oil circuit when it is open or closed. The original manufacturer had no solution. Evander contacted several other hydraulic cartridge valve manufacturers for inquiry, but no result. He was very worried. Evander searched AAK website on Google and noticed that AAK has solved the problem of hydraulic cartridge valves for customers many times. He left a message: Can AAK make the hydraulic pressure control cartridge valve stable, and open and close sensitively? After communication, we learned that he was facing difficulties in the test run. According to his hydraulic pressure control cartridge valve drawing and system schematic diagram, AAK engineers analyzed that as long as the original structure of the hydraulic pressure control cartridge valve was optimized, the problem could be solved. Evander saw the hope and requested AAK to make 20 samples. After 45 days, AAK delivered the samples of 20 hydraulic pressure control cartridge valves. 8 months later, Evander sent the first order of 500 hydraulic pressure control cartridge valves. Their customer was satisfied with their hydraulic power unit prototype, which operated stably and opened and closed sensitively, so the first order quantity was also surprising. AAK can replace the local cartridge valve manufacturer in Greece, the key point is that AAK hydraulic cartridge pressure control valve has two-way control oil circuit for opening and closing valves, which has high sensitivity, stable operation, and good reliability. We optimized it from 3 points: 1. The hydraulic cartridge pressure control valve spool has the conduction characteristic, and the valve spool structure is composed of the upper closed valve oil cavity cylindrical surface, the lower open valve oil cavity cylindrical surface, and the middle seal isolation boss cylindrical surface. The through cavity in the valve spool is composed of cylindrical through holes and boss holes at the upper and lower ends. 2. The valve spool mounting hole on the valve body is composed of 4 cylindrical stepped holes from top to bottom, and the diameter decreases from top to bottom. The upper end of the fourth step hole has a sealing cone, the lower end of the third step hole has a side wall of the valve body, and there is an oil inlet of the main oil circuit, and the fourth step hole is an oil outlet of the main oil circuit. 3. The second step hole and the intermediate seal isolate the cylindrical surface of the boss to form a reciprocating dynamic seal. There is a transition seal guide sleeve between the first step hole and the cylindrical surface of the upper closed valve oil chamber, and the inner hole of the guide sleeve is reciprocating dynamic seal. The optimized hydraulic cartridge pressure control valve, the upper and lower end faces of the valve spool are connected, and the oil pressure of the oil circuit has no effect on the lifting movement of the valve spool, and the size and fluctuation of the oil pressure of the main oil circuit does not affect the opening and closing sensitivity of the valve spool. It ensures the reliability, stability and sensitivity of the opening and closing state of the hydraulic cartridge pressure control valve. AAK hydraulic pressure control cartridge valve, 3 main selling points, sensitive, stable and reliable, you can also try it! https://www.aakindustry.com/info-detail , /pressure-control-cartridge-valves- aak490

The more complex the oil passage of the hydraulic valve block is, the more difficult it is to remove the burr. If the burr is not completely removed, either the hydraulic valve block is scrapped or the whole hydraulic system is paralyzed. AAK is not only 50% more efficient than its peers in processing high-precision and difficult hydraulic valve blocks, but also 100% burr free.   Liam, from Canada, sold a batch of hydraulic shield machines. Because of the burr remained in the hydraulic valve block, it was needed to replace the hydraulic relief valves at a high frequency, which affected the construction. The customer directly complained to the boss and asked the problem to be solved completely within a month, otherwise he would need to charge for the loss of working time. The manufacturer said that because the oil circuit of the hydraulic valve block is complex, it is difficult to ensure 100% burr free. Liam had to find a new manufacturer of hydraulic valve blocks. He kept sourcing for 5 days, but no factory was unwilling to complete the production of 20 hydraulic valve blocks with 100% burr free in 25 days. Liam had a big headache.   Liam got into touch with me directly under the introduction of his friend, and explained the above difficulties he encountered. According to his hydraulic valve block drawing, just from the perspective of processing, it is not difficult, but the burr removal of some holes needs unique skills, which is the reason why other manufacturers are unwilling to produce. After 20 days, 20 hydraulic valve blocks were produced at AAK, and they were finished in 20 days from drawing to shipping.   Three months later, Liam sent an email to say thanks to AAK. The hydraulic shield machine equipped with AAK hydraulic valve blocks, has been very smooth in construction, and no burrs were found. Liam was surprised how AAK completed the hydraulic valve blocks with complex oil circuit free of burr in such a short time? AAK finished the production of hydraulic valve block efficiently, and it is 100% burr free, lies in the following 3 unique skills:   1. In terms of equipment, the German HECHERT 630 horizontal machining center has 12000 spindles, 60 HSK100 high-speed tools, an XYZ travel of 1050-900-800, a moving speed of 65M, and a tool change time of only 1S. Combined with the Siemens 840D operating system, the machining accuracy can be guaranteed, and the machining efficiency is more than twice that of most machining centers.   2. Technically, AAK adopt the intelligent grinding to replace the traditional abrasive flow deburring technology. During grinding, the main shaft of the equipment can swing 360 ° at will, and there is no dead angle during grinding. No matter the surface of the hydraulic valve body, or the inner hole, cross hole, blind hole of the hydraulic valve block, as well as the end face and inner and outer contour of the orifice, the burrs can be completely removed.   3. In terms of detection, the German Karlstorz industrial endoscope is used. The probe can be bent and rotated, and detect the oil passage of the hydraulic valve block for 360 ° without dead angle, to ensure that the hydraulic valve block is free of burrs before shipment.   Last week, Liam sent us an inquiry for another hydraulic valve block. He told me privately that the boss now pays more and more attention to him, and gives him more and more business to handle.   AAK hydraulic valve blocks, high efficiency, high accuracy, no burrs, you can give it a small try. https://www.aakindustry.com/info-detai , l/hydraulic-valve-blocks-296

For hydraulic pilot operated relief valve with machining accuracy below 0.5μm, and test accuracy 0.05% FSO BFSL, Renzo found AAK only. Renzo comes from an Italian hydraulic equipment company and has been engaged in hydraulic cartridge valve procurement for many years. At the beginning of last year, they developed a high-end hydraulic injection molding machine, which requires a hydraulic pilot operated relief valve. Renzo chose an old supplier to make samples, and the machine test run was also successful. The equipment began to be put into production, but 3 months after sales, a customer complained that the positioning of the injection molding machine was inaccurate, resulting in product deformation. After troubleshooting, it was found that the flow of the hydraulic pilot operated relief valve was unstable. According to the feedback of the original hydraulic relief valve manufacturer, the accuracy of this hydraulic pilot operated relief valve requires to be within 1μm, it is difficult to guarantee this accuracy on each valve, and it can be replaced for free. However, there are more and more similar complaints later, and the second batch of injection molding machines will also be put into production. The boss was very angry and asked Renzo to solve it at one time and find a hydraulic relief valve manufacturer with stable quality. Renzo contacted more than 10 hydraulic cartridge valve manufacturers, but most of them were not able to achieve the accuracy within 1μm, Renzo was very anxious. Renzo began to source new hydraulic relief valve manufacturers online, and found AAK Hydraulic Valves on Google. He requested that the machining accuracy of each hydraulic pilot operated relief valve needs to be within 1μm. I replied to him that unless accidental, the machining accuracy of AAK hydraulic pilot operated relief valve can be within 0.5μm, Renzo was relieved. One month later, AAK delivered the first batch of quantity. Three months later, Renzo emailed that with AAK hydraulic pilot operated relief valves, there was no customer complaint that the positioning of the injection molding machine was inaccurate during operation, and the processing accuracy was all within 0.5μm. The next day, his placed the order for the second batch of hydraulic pilot operated relief valves. AAK can produce the hydraulic pilot operated relief valves that can be 100% qualified, and the machining accuracy is within 0.5μm, it is mainly because that we control both the processing and testing strictly, and the domestic hydraulic cartridge valve manufacturers generally cannot control the details of the process. AAK uses American Hardinge ultra-high precision machine tool to produce this hydraulic pilot operated relief valve, and the machining accuracy can reach 0.1-0.5μm, ensuring that the valve hole accuracy of each hydraulic relief valve is consistent. After processing, each hydraulic relief valve is tested. The pressure test bench is equipped with BD SENSORS pressure sensor imported from Germany, which has strong overpressure resistance. The range can reach 0 to 2200bar, and the test accuracy is 0.05% FSO BFSL. It is equipped with pressure measuring equipment with digital display and power-saving output. During the test, technicians can clearly see the test data, which is easy to operate, easy to track, and no oversight. AAK hydraulic pilot operated relief valve, each product makes you feel at ease, welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-pilot-operated-relief-valves- aak29 , 5