Mechanical Hardware

Richard is a purchaser of ATOS company in Italy. Last September, ATOS received a complaint from a South African customer that the starting pressure of the hydraulic pump was often insufficient recently. The field engineer analyzed that the valve spool spring of the pilot hydraulic relief valve of the hydraulic pump was deformed, resulting in the unstable pressure of the hydraulic system. He tried to replace the pilot hydraulic relief valve to solve the problem. The customer questioned the stability of their equipment because it had been used for less than 1 year. After learning about it, the boss asked Richard to solve the customer complaint as soon as possible and replace this batch of pilot hydraulic relief valves. Richard wondered about the problem with the pilot hydraulic relief valve. This pilot hydraulic relief valve was produced by an American company and was re purchased this time. The original manufacturer replied that this pilot hydraulic relief valve has been produced according to the standard. The strength limit and elastic limit of the piano steel wire used meet the requirements. The problem should be caused by improper use by the user. Of course, he can not tell the boss of such results. The original manufacturer was unwilling to take responsibility. Richard contacted nearly 20 hydraulic valve manufacturers, including AAK hydraulic valve. After several rounds of communication, Richard eliminated half of the hydraulic valve manufacturers, and then asked the shortlisted hydraulic valve manufacturers to send their own ready-made pilot hydraulic relief valves. Their company conducted spring elasticity test. Finally, 5 manufacturers were selected to send samples for the second round according to the drawing size of his pilot hydraulic relief valve and improve the spring elasticity. After communicating with Richard, we learned that the service limit pressure of the hydraulic pump is above 350bar and the service frequency is very high. Although the piano wire spring used by Sun, the original American manufacturer, is advanced, special materials must be used for this special working condition. We started to test the special spring first. Richard has received samples of pilot hydraulic relief valves from other 4 factories, but AAK hasn't sent them yet. Richard pushed us several times and we advised that we are still in testing. Richard may think AAK should not be able to do it. AAK engineers spent 3 weeks, 6 times replacing materials and 9 times proofing, determined the special alloy steel spring as a trial, and sent the pilot hydraulic relief valve 30 days later. We specially asked Richard about the test of the pilot hydraulic relief valves from the other 4 manufacturers. Richard advised that if AAK pilot hydraulic relief valve could not pass the test, he would need a new round of looking for suppliers. A month later, Richard informed that AAK pilot hydraulic relief valve could still be opened and closed normally after 1 million tests under high stress, with flexible action and no deformation of the spring, while the samples from the other 4 manufacturers began to be unstable after 400,000-600,000 tests. AAK stands out from more than 20 suppliers after 3 rounds of PK. The spring of hydraulic valve is most afraid of fatigue damage，especially under high stress. The spring of AAK pilot hydraulic relief valve adopts SiCr alloy steel. The spring has the characteristics of high temperature resistance, high rigidity, high relaxation resistance and long fatigue life. Richard is finally relieved. He asked us to provide two more pilot hydraulic relief valves, to replace the pilot hydraulic relief valves produced by the original American manufacturer Sun company, and then start preparing materials for mass production AAK pilot operated hydraulic relief valve is unconventional and exceeds the conventional goods of Sun company in the United States. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-relief-valves-aak137

Oleos is from a Spanish hydraulic equipment manufacturing company and has cooperated with AAK for 3 years, mainly focusing on non-standard hydraulic cartridge valves. At the beginning of this year, their customers complained about the high energy consumption of excavators. Their engineer judged that the performance of the original hydraulic manifold parameters had declined and asked the original manufacturer to optimize them. 2 weeks later, there was no result. Oleos contacted me. According to his hydraulic schematic diagram and original hydraulic manifold design, AAK engineers had a basic idea after discussion, but it would take time. Oleos said that he would be willing to wait even 1 year as long as effective improvements can be made. AAK engineers finally improved the structure after more than 2 months of continuous design adjustment. AAK sent 5 hydraulic manifold samples. Last week, Oleos placed an order for 100 pcs of hydraulic manifolds. It was reported that with AAK hydraulic manifold installed on the equipment, the energy consumption decreased by 20%. AAK optimized the hydraulic manifold, including pilot control valve group, 4 two-way plug-in wide control components, valve block and its internal and external connections to form a four-way hydraulic manifold control system, which has 3 features: 1. AAK hydraulic manifold adopts horizontal structure, with 4 main channels and several pilot control channels, multiple internal mounting surfaces and 2 external mounting surfaces. 2. The top of the AAK hydraulic manifold block is equipped with a boss for installation, a boss type step surface consisting of the boss and 2 parallel finishing planes, a mounting surface of the boss's convex part, 2 groups of pilot control valve groups are installed, and a mounting surface of the plane with parallel boss planes is installed. First, 2 two-way cartridge valve control components are installed, and a flange type control cover plate is provided. 3. On the front of AAK hydraulic manifold block, two other two-way cartridge valve control components are installed. The finishing mounting surfaces on the left and right sides are provided with two control oil ports for the main passage and connecting holes for installing bolts. The bottom and back of the valve block are external mounting surfaces, which are used as the orifices and connecting mounting surfaces of the output ports of the main channel, and mounting surfaces for auxiliary installation and connection. This optimized hydraulic manifold can ensure the maximum part of the control requirements, including the differential circuit and flow regeneration, and is conducive to the layout and direction selection of the input and output pipelines. The most important thing is to greatly reduce the hydraulic resistance and save the energy consumption of the system. AAK hydraulic manifold has tricks to reduce energy consumption. You can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-manifolds-aak451

Channing is from Canada. In October of last year, their customer wanted to customize a hydraulic cylinder, requiring that the high pressure oil flow in and out of the cylinder must be consistent. This will require a hydraulic cartridge needle valve with high requirements. Channing made samples from a cartridge valve manufacturer that has cooperated for 5 years, but the hydraulic cartridge needle valve made by this manufacturer is easy to block, and the throttling function does not match the hydraulic cylinder. It is not difficult to solve the blockage problem of the hydraulic cartridge needle valve, but the throttling function does not match, which is difficult for the manufacturer. Channing contacted other hydraulic cartridge needle valve manufacturers, but after a few days, there was no result. The engineer has been urging the procurement progress of hydraulic cartridge needle valve, and Channing is worried. Channing found AAK in B2B and left us a message: Are you interested in challenging the hydraulic cartridge needle valve with high stability throttling function? After reading this message, we understand that he has a problem with the function of the hydraulic cartridge needle valve purchased, or wants to develop innovative hydraulic cartridge needle valve. After communication, it was learned that his equipment had strict requirements for throttling function. He provided the anatomical picture of the original hydraulic cartridge needle valve and the hydraulic system of the equipment. AAK engineers found that changing the throttling mode of the hydraulic cartridge needle valve is an idea. Channing required AAK to make samples. After 40 days, AAK sent 18 samples of hydraulic cartridge needle valves. 3 weeks after the samples were sent, Channing informed that the throttling function of AAK hydraulic cartridge needle valve could meet the requirements of hydraulic cylinder. Last week, Channing told me that AAK hydraulic cartridge needle valve was installed on the cylinder and had been working for more than 3 months without blocking. Especially, the hydraulic oil flow in and out of the cylinder was very stable. The customer was ready to place an order and asked about the production time of 480 hydraulic cartridge needle valves. AAK hydraulic cartridge needle valve is so innovative that it changes the traditional orifice joint into a face throttle mode, completely saying goodbye to the objective problem that small holes are easy to be blocked, especially the flow control is more stable and the flow through the annular gap is changed linearly. 360 ° face throttling, no blocking, stability improved by at least 70%. 1. Inside the hydraulic cartridge needle valve body, there is a hollow cavity, which is vertically connected with the oil outlet hole, and one end of the valve spool is in the cavity of the valve body. 2. The insert nut has a concave threaded socket. The adjusting screw is installed inside the threaded socket. The other end of the valve spool passes through the insert nut and is connected with the adjusting screw. An annular gap is formed between the rod part of the valve spool and the hollow cavity to form a 360 ° face throttle, which can linearly change the flow through the hydraulic cartridge needle valve, so that the throttle flow is easy to control and more stable. 3. The valve spool and valve body are matched with holes and rods to control the clearance. The difficulty of the 360 ° face throttling is to control the annular gap. Most hydraulic cartridge valve manufacturers can only give up. Adjust the screw to control the size of the annular gap between the valve needle and the valve body, change the size of the throttling area, and realize the throttling of the hydraulic oil annular gap, with no flow fluctuation. AAK hydraulic cartridge needle valve, 360 ° face throttle, no blockage, and no flow fluctuation, you can also try it. https://www.aakindustry.com/info-detail , /cartridge-needle-valves-aak526

Bauer is a purchaser of American PowerTeam company. In recent years, the purchasing of hydraulic valves has been smooth. Last October, PowerTeam received a test order for a hydraulic power unit from a South African customer. The customer requires to receive the prototype in the shortest time. If the prototype test is normal, there will be a series of orders later. The boss attached great importance to it and asked the technical team to design and develop it. What the engineers are most worried about is that the use frequency of the hydraulic power unit is twice that of the conventional one. Therefore, the durability of the hydraulic threaded cartridge valve used should be at least more than 2 million times. According to the parameters and working conditions of the hydraulic threaded cartridge valve, Bauer contacted more than 20 new and old hydraulic valve manufacturers. After one-to-one communication, he selected 5 hydraulic valve manufacturers to make samples for testing. 20 days later, Bauer received 6 samples of hydraulic threaded cartridge valves. After the engineers installed and tested, none of the hydraulic threaded cartridge valves could pass the durability test for 2 million times. Bauer had a second round of communication with the manufacturers, 3 of the hydraulic valve manufacturers said they would re-sample the hydraulic threaded cartridge valve. After the second round of testing, although the durability of hydraulic threaded cartridge valves has been improved, they have not reached 2 million times. Bauer was embarrassed. He might have killed the big order. After communicating, the manufacturer advised that there was nothing he could do. Bauer was very worried and had to try his luck with a new hydraulic valve manufacturer. He found AAK hydraulic valve on Google and searched AAK website (www.aakindustry.com). After browsing, Bauer thought that AAK might be able to successfully sample this hydraulic threaded cartridge valve. After receiving the working condition requirements and drawings of the hydraulic threaded cartridge valve from Bauer, AAK engineer made analysis and determined that they were more than 95% confident to make it successfully. After 2 rounds of testing, the engineer defined the production process of proofing and circled the technical difficulties. After 20 days, AAK sent the samples of the hydraulic threaded cartridge valve. Unexpectedly, 2 months after the samples of hydraulic threaded cartridge valves were sent, we received the official order of 600 hydraulic threaded cartridge valves from Bauer. Bauer said that the equipment commissioning of South African customer was successful and the operation was stable, they were very satisfied with the quality of PowerTeam. The boss was very satisfied that Bauer found such a great hydraulic valve manufacturer and designated AAK as their exclusive supplier of hydraulic threaded cartridge valves. Bauer also knew why AAK hydraulic threaded cartridge valve can be successful at one time. There are not only professional engineers to design the process, but also self-developed equipment to escort it. Most hydraulic valve manufacturers do not have the equipment for durability test, but many dimensions of this hydraulic threaded cartridge valve are non-standard, so many non-standard calibers of this hydraulic threaded cartridge valve should be tested separately. AAK has the independently developed durability test equipment for hydraulic threaded cartridge valves, which can be combined with NFPA / T2.6.1 standard to carry out fatigue test on valves according to the specified requirements of customers. AAK durability test equipment has 5 test stations that can work independently of each other. Each test area is equipped with hydraulic and electrical sources that are conducive to valve fatigue test, which can greatly improve the detection efficiency of the equipment, so as to ensure that each hydraulic threaded cartridge valve can be shipped after passing the test. AAK hydraulic threaded cartridge valve, with unique testing equipment to ensure the success of each sample. You are welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-threaded-cartridge-valve- aak146

Shunnar is from Pakistan and has been purchasing hydraulic valves in China for quite some time. In the second half of last year, they purchased a hydraulic pressure control valve from a hydraulic cartridge valve manufacturer in Ningbo China, which is equivalent to a model of HydraForce. 3 months later, the customer complained that the hydraulic pressure control valve did not hold pressure. The original manufacturer claimed that it was caused by a leak and it was difficult to avoid it 100%. Shunnar realized that the manufacturing quality of the original hydraulic cartridge valve manufacturer was unstable. Shunnar found AAK hydraulic valves on Google and left a message: 1. Does AAK has this hydraulic pressure control valve equivalent to HydraForce model? 2. What is the pressure holding performance? 3. What is the lead time for 100 hydraulic pressure control valves of this model? After communication, it was learned that she encountered difficulties in purchasing the hydraulic pressure control valve. I provided her the shipping list of our hydraulic pressure control valve over the past year, as well as a video of our inspection of the hydraulic pressure control valve. Perhaps Shunnar was rest assure of the quality and directly placed an order for 100 hydraulic pressure control valves the next day. 6 months have passed, which was last week. Shunnar emailed to inquire about the production time of 500 hydraulic pressure control valves and specifically stated that AAK hydraulic pressure control valves have been holding pressure normally for 6 months, while some of the hydraulic pressure control valves from the original hydraulic cartridge valve manufacturer lost pressure in only 3 months. Before shipment, the AAK hydraulic pressure control valve is tested on a test bench, which has 3 unique features: 1. The test bench is equipped with a set of high-precision hydraulic gauges and control systems. 2. The reliability and efficiency of detection are more stable than most test benches, and the detection is also more accurate. 3. On the test bench display screen, it is possible to visually see the measured pressure and flow values of each hydraulic pressure control valve. If there is a discrepancy with the set data, a red font will appear to prompt, thus avoiding human error. AAK hydraulic pressure control valve, is holding pressure even in 100% full testing? You can give it a try. AAK HYDRAULIC VALVES (615) 2023-06-27 https://www.aakindustry.com/info , -detail/pressure-control-valves-aak615

A while ago, Kuzma from Russia left a message on the website of hydraulic cartridge valve manufacturer AAK: 1.Can you provide RV10-26 hydraulic cartridge relief valve with an adjustable hand knob? 2. Each valve needs to be tested at a low flow rate of 2L/min to ensure that the pressure can be adjusted within a range of up to 200 bar. 3. What is the price and lead time for 50 pcs of RV10-26 hydraulic cartridge relief valves? Such messages have a probability of over 95% being actual orders, and hydraulic cartridge valve manufacturer AAK often responds promptly. After communication, it was learned that the RV10-26 hydraulic cartridge relief valve was purchased by them all year round. The relief valves provided by the original hydraulic cartridge valve manufacturer have 2 problems that often troubled them, the hand knob and pressure issues. Because of the requirements of the equipment, their RV10-26 hydraulic relief valve needs to be manually adjusted frequently. Although the original hydraulic cartridge valve manufacturer has conducted the anodizing treatment of the adjusting hand knob and the fixed screw disk, 6 months later, the adjusting screw is severely worn, resulting in a short service life of the valve. The suggestion given by hydraulic cartridge valve manufacturer AAK is to first adjust the hand knob and fixed screw, select aluminum alloy with high hardness, and the adjustment screw must be hardened before anodizing treatment. After hardening and heat treatment, the wear resistance of the adjusting screw can be increased by more than 50%, which is a detail that most hydraulic cartridge valve manufacturers are not familiar with. On the second day, Kuzma approved the suggestion of hydraulic cartridge valve manufacturer AAK. For Kuzma's requirement to test each valve at a low flow rate of 2L/min to ensure that the pressure can be adjusted within a range of up to 200 bar, it should because of the valves provided by the original hydraulic cartridge valve manufacturer had leakage issue. In the case of stable manufacturing quality, it is necessary to test each RV10-26 hydraulic relief valve before shipment. I estimate that the original hydraulic cartridge valve manufacturer did not conduct a 100% full inspection. Yesterday, we completed the production of 50 pcs of RV10-26 hydraulic relief valves and attached our inspection video. Today, we received confirmation from Kuzma for shipment. How did AAK test this model? We chose a test bench that we modified ourselves. First, we installed the hydraulic relief valve into the valve block, which was connected to the inlet and outlet pipes. After started the hydraulic oil pump on the test bench, the testing system started working. After the oil forms a circuit, the inspector will manually adjust the oil outlet pressure within the range of 200 bar, set the flow rate at 2L/min, run for a period of time, and record the pressure and flow data. This set of tests is relatively slow, but very accurate. Because it consumes a lot of testing time, most hydraulic cartridge valve manufacturers are unwilling to conduct such tests or 100% testing. AAK hydraulic cartridge relief valve, focus on details, adhere to inspection, you can also give it a try! AAK HYDRAULIC CARTRIDGE VALVES (725) 2023-11-18 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak725

The opening and closing characteristics can reach 95% opening rate and 90% closing rate, the operating pressure swing is not greater than ± 0.1MPa, and the design service life is more than 1 million times. For this high precision, high stability and high durability 3-high hydraulic threaded cartridge valve, Jacob is surprised that the AAK hydraulic valve is successful in one-time sample, while most hydraulic valve manufacturers are not able to do at all. Jacob is a purchaser of Intermot company in Italy. The company has a newly developed hydraulic motor, which needs to use hydraulic threaded cartridge valve. This motor is a high-frequency operation and has strict requirements for various parameters, especially for the parameters of hydraulic threaded cartridge valve, which has 3 high requirements of high accuracy, high stability and high durability. The boss asked Jacob to complete the procurement of this batch of hydraulic threaded cartridge valves within 60 days. He selected 4 from the original hydraulic valve suppliers to make samples. After installation, it was found that the opening and closing characteristics of hydraulic threaded cartridge valves can only reach 90% opening rate and 85% closing rate, which is 5% lower than the parameter requirements. Even the operating pressure swing of some hydraulic threaded cartridge valves exceeds 0.2MPa. In the last step testing, only 2 or 3 samples can be intact after 1 million durability tests. If all three requirements should be reached at the same time, nearly none of the samples meet the standard. Due to the limitation of equipment, the original manufacturer said it was difficult to improve significantly. Jacob learned about AAK hydraulic valve under the introduction of its peers. After browsing AAK website (www.aakindustry. com), he felt that the AAK hydraulic threaded cartridge valve might help him. After receiving the parameter requirements and drawings of his hydraulic threaded cartridge valve, we found that the requirements of this hydraulic threaded cartridge valve are not simple, but our technical team needs to chew this hard bone and gave reply to Jacob that if it goes well, the samples of the hydraulic threaded cartridge valve can be sent within 20 days. On the contrary, it needs more time for proofing. Jacob hopes that AAK hydraulic threaded cartridge valve sample will be successful, which just meets the delivery time required by the boss. After 15 days, AAK sent the hydraulic threaded cartridge valve samples successfully. After installation and test by the engineer, all parameters of the hydraulic threaded cartridge valves are qualified and meet the 3 high requirements of high accuracy, high stability and high durability. After 25 days, the shipment of the hydraulic threaded cartridge valve was delivered as scheduled. The boss knew a series of frustrations that Jacob encountered during this purchasing, and praised the 3 high standards of AAK hydraulic threaded cartridge valve, not only because the quality of AAK hydraulic valve is reliable, but also because of credit. Jacob wondered why AAK hydraulic valve can achieve a 3-high hydraulic threaded cartridge valve with only one-time sample, while most hydraulic valve manufacturers are helpless. For the 3-high hydraulic threaded cartridge valve, AAK has Mikron GF machining center imported from Switzerland. It has advanced thermal stability, and the high precision is still stable in the long-time machining process. The Mikron GF unique spindle omnidirectional anti-collision protection technology (MSP) can prevent the spindle from collision failure, and integrate automatic solutions to ensure the stability of precision parts. There are also experienced technicians who have been in our factory for more than 10 years. Sometimes they can judge the production status by listening to the sound of the machine only, and each production link of the hydraulic threaded cartridge valve is engraved in their mind. The craftsman hand will produce good products, which is the strength of AAK. Integrity, sincerity, trust and credit are the way of hydraulic valves that AAK has always adhered to. AAK hydraulic threaded cartridge valve, strength to speak, sincerity to do things, welcome a small try! https://www.aakindustry.com/info-detai , l/hydraulic-threaded-cartridge-valve- aak145

Brooke is the purchasing manager of the American company Vickers and has been working with AAK for more than 6 years. One morning last month, he emailed us that his job was finally saved. I was surprised how a veteran suddenly said that he had finally "saved his job". In private, I learned that it was because he had some disagreements with his boss and quarreled. The boss almost let him go. Because his boss is not satisfied with the price of AAK, sometimes the price of AAK for the same hydraulic valve will be more than 20% higher than that of other Chinese hydraulic valve manufacturers. At the cost meeting last month, the boss proposed to replace the Chinese hydraulic valve manufacturer, but Brooke insisted that AAK is the most cost-effective Chinese hydraulic valve manufacturer, so it is not recommended to replace it. On the contrary, he can only leave. The year before last, the boss went to Shanghai PTC exhibition with him to develop suitable Chinese hydraulic valve manufacturers for cooperation. They did get acquainted with many Chinese hydraulic valve manufacturers at the exhibition, but after more than 2 years of testing samples and running in, Brooke found that there is really no second Chinese hydraulic valve manufacturer that can compare with AAK in all aspects. AAK is not only reliable, but also has temperature, whether it is cooperation, delivery, quality, after-sales etc. Brooke remembers the support and help from AAK hydraulic valve over the years. On one occasion, due to the urgent delivery time of a South African customer, Brooke could not find a factory with stock at that time and could only customize it. Most Chinese hydraulic valve manufacturers said that the lead time from sampling to delivery should be at least 2 months. AAK stopped a production line and asked technicians to work overtime to speed up the production. Samples can be produced in 30 days and shipped in 45 days. It is precisely because of the temperature of AAK that Vickers has the opportunity to cooperate with this big customer in South Africa. Every time, AAK products can be successful at one time during testing. They are the best among all Chinese hydraulic valve manufacturers in terms of accuracy, concentricity, fatigue resistance and durability. Brooke's deepest memory is that one time, the South African customer mentioned that the hydraulic valve used for more than 2 years often stuck during work and asked for replacement. After receiving the news, AAK immediately told Brooke to ask the customer to return the goods. After inspection, it turned out that the hydraulic oil used by the South African customer was not clean and caused the problem. Later, AAK disassembled and cleaned the valve and sent it again, and asked the customer to change the hydraulic oil. Until now, no problem has been mentioned. If this happened to other Chinese hydraulic valve manufacturers, their reply must be that this has passed the warranty period. After listening to Brooke's analysis, the boss instantly resonated. It is indeed too difficult to find another Chinese hydraulic valve manufacturer like AAK, who can always put the interests of customers at the first place. Sometimes, even if it is 20% higher, it is still worthy. At the same time, it was made clear at the meeting that AAK would be the first choice for them among Chinese hydraulic valve manufacturers in the future. AAK is the most reliable hydraulic valve manufacturer in China. It can solve difficulties for customers at any time. Welcome to give it a try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-valve- manufacturers-aak1 , 44

Erdmann has been a purchaser of German HAWE company for 5 or 6 years and has been doing very well. Last month, the company had a special hydraulic threaded cartridge valve to purchase. Because it is to be used in the Arctic region, the corrosion resistance of hydraulic threaded cartridge valve needs to be very high. The boss asked him to identify the suppliers and approve the samples within 2 months. Erdmann felt that it could be completed within 20 days. He sent the drawings of hydraulic threaded cartridge valves to the original hydraulic valve manufacturers. Only 2 weeks later, he received samples of hydraulic threaded cartridge valves from one factory. The surface gloss of these samples of hydraulic threaded cartridge valves was quite good. The company tested them on the exploration drilling machine and delivered it quickly to the customer. 3 months later, the customer complained that the hydraulic threaded cartridge valve on the hydraulic pump was seriously corroded, some threads were stuck, the equipment could not be started, and the test run was unsuccessful. The boss thought that Erdmann was careless and ignored the use scene of the Arctic region. The boss again asked him to make new samples and do salt spray test inside the company. Actually, Erdmann emphasized that the hydraulic threaded cartridge valve is to be used in the Arctic region. The original supplier said that their hydraulic threaded cartridge valves have good gloss and corrosion resistance, and can be used in the Arctic region. Erdmann communicated with the original hydraulic threaded cartridge valve supplier again, and the reply was that most hydraulic valve manufacturers just adopt the zinc plating process, and he used the nickel plating process which is the highest level of corrosion resistance. Erdmann realized the difficulty of corrosion resistance in the Arctic regions. Erdmann emailed more than 20 hydraulic valve manufacturers who had been contacted before, emphasizing that the hydraulic threaded cartridge valve must be in the highly corrosive environment in the Arctic region, and the service life shall not be less than 9 months. Only 3 hydraulic valve manufacturers said they could have a try, but there was no response from other manufacturers. Erdmann was a little flustered. Erdmann saw AAK hydraulic valve on Google, who supplied to hydraulic pump company in Russia. He felt that AAK might give him a glimmer of hope. He emailed us to ask if we can produce hydraulic threaded cartridge valves to be used in Arctic regions. We directly replied that the components of the valve should be treated by special electroplating process in order to meet the condition in the Arctic regions. After 20 days, AAK sent samples according to his hydraulic threaded cartridge valve drawings. HAWE company conducted salt spray test on samples from all 4 manufacturers, with the corrosion condition twice that of Arctic regions. More than 2 months later, Erdmann informed us that AAK hydraulic threaded cartridge valve had no red rust after more than 1500 hours of salt spray test. At the same time, the company's engineers determined that AAK hydraulic threaded cartridge valve had no problem to be used in the Arctic regions for 1 year. While the samples from other manufacturers began to produce red rust in more than 120 hours, and there were white corrosion products on the coating surface. Erdmann hesitated to report to his boss because the quotation of AAK hydraulic threaded cartridge valve is 30% higher than that of other suppliers. The surface electroplating process of AAK hydraulic threaded cartridge valve is zinc nickel alloy coating, which has high requirements for steel heat treatment. It may be difficult to find a second factory in Ningbo who can go through both of these two processes smoothly. In addition, the process cost is more than 5 times higher, but the corrosion resistance is more than 10 times higher than the general zinc plating and nickel plating process. With these data, the communicated between Erdmann with the boss is very efficient. The boss mentioned that for all those valves with high standard and high working conditions, just to choose AAK hydraulic valves. AAK hydraulic threaded cartridge valve will not corrode in the Arctic regions even after being used for 1 year. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-valves-aak136

AAK hydraulic directional control valve, which has been used for 2 years, is free of rust and corrosion. It stands out from 3 hydraulic valve manufacturers. Joseph finally received a large order for 1000 hydraulic directional control valves from customer. Joseph is the purchasing manager of a hydraulic pump company in Italy. Two years ago, the company received a test order for a special chemical hydraulic pump, which needs a hydraulic direction control valve. The customer requires that after 2 years, if the hydraulic directional control valve is free of rust and corrosion, it will have the opportunity to obtain a large order. The boss asked Joseph to find a very professional hydraulic valve manufacturer. Joseph knew that relying only on the existing hydraulic valve suppliers is not enough to guarantee the quality. He checked with all the hydraulic valve manufacturers he had contacted before and the new ones searched online, and selected 16 hydraulic valve factories, including AAK Hydraulic Valve. He asked all hydraulic valve manufacturers to provide 2 samples of hydraulic directional control valves according to the drawing requirements of the customer for testing at their headquarters. According to the post analysis to the drawing of hydraulic directional control valve from Joseph, we found that there is no problem to meet the accuracy, sensitivity and durability of this hydraulic directional control valve, except that the finish of the outer surface of the hydraulic directional control valve must be free of abnormality, rust and corrosion after 2 years of use, which is too uncertain. We didn't receive email from Joseph until 15 days after we sent out the hydraulic directional control valve samples. According to their simulation test, only the hydraulic directional control valves from 3 factories can be approved to send samples to their customer. It would take 2 years for AAK to know if we can get the order of hydraulic directional control valve. At that time, we were very surprised that there were such strange customers. We almost forgot the test order of this hydraulic directional control valve 2 years ago. Last week, Joseph sent an email asking about the production time and new price of 1000 hydraulic directional control valves, and told us that the surface of the hydraulic directional control valves from other two hydraulic valve manufacturers began to have scratches, corrosion, fading and rust after more than a year of use, only the surface gloss of AAK hydraulic direction control valve does not change. In fact, when we sent out the hydraulic directional control valve samples, we were not 100% sure to meet this special requirement, because we used a new process to proofing. We know that the conventional nickel plating, chromium plating, zinc plating, blackening and other processes basically can not keep the same appearance after 2 years of use. We adopted electroless nickel plating. The principle of this process is to generate a coating on the metal surface by solution chemical reduction reaction, and the coating is amorphous. After treatment, the surface of the metal is smooth, corrosion-resistant and wear-resistant, and the coating film has few pores and uniform thickness. At the same time, the hardness of the heat treatment can reach HRC70. After confirming the order, Joseph privately reminded us several times that the surface finish treatment of large goods should be careful. His boss said that after this order was shipped smoothly, there would be more and more inquiries later, and his salary was raised by 2 levels. AAK hydraulic directional control valve is rust free and corrosion free. It is still the same as the new one after being used for 2 years. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-directional-control-valves- aak135

Rex is a hydraulic valve wholesaler in Turkey. At the beginning of last year, their customer complained that the hydraulic cartridge relief valve, which has been used for less than 6 months, was stuck or worn, resulting in equipment shutdown. The original hydraulic cartridge relief valve manufacturer advised that under the equipment working condition of 450 bar, the hydraulic cartridge relief valve is likely to be abnormal, and the service life can be only guaranteed for 6-8 months. Rex realized that the hydraulic cartridge relief valve produced by this manufacturer was not reliable under high pressure. After checking with other hydraulic cartridge valve manufacturers, none of them was able to guarantee a service life of more than 1 year under 450 bar pressure. Rex was worried. Rex found AAK on Google. After staying at AAK website for more than 10 minutes, he found that AAK has hydraulic cartridge relief valve benchmarking HAWE, and is capable of high pressure resistant cartridge valves. He left us a message: Can the service life of AAK hydraulic cartridge relief valve be more than 1 year under 450bar working condition? After communication, it was learned that Rex was in a difficult position to purchase the hydraulic cartridge relief valve. I sent 6 cases of hydraulic cartridge valves with pressure resistance of 450bar for his reference. On the third day, Rex asked AAK to make samples per his drawing. He is open for the internal structure provided that the external dimensions were not changed, and the hydraulic cartridge relief valve had a service life of more than 1 year at 450bar. After 50 days, AAK sent 36 samples of hydraulic cartridge relief valve. 2 weeks after the samples were sent, Rex informed that AAK hydraulic cartridge relief valve worked normally on their equipment. Last week, Rex informed us via email that the equipment had been working for nearly 1 year without any customer complaint after being installed with AAK hydraulic cartridge relief valve. Their after-sales department is counting the number of the hydraulic cartridge relief valve that needs to be re-purchased. He asked me to wait for his further good news. This hydraulic cartridge relief valve can be safe under 450 bar high pressure for 1 year. In terms of material selection and material heat treatment, we follow the standards of HAWE, because AAK has engineer who has worked in HAWE for 13 years. At the same time, we have made 3 optimizations in the internal structure to challenge the high pressure. The optimized hydraulic cartridge relief valve has a buffering effect on the oil to avoid the impact of high pressure on the valve interior, reduce wear and avoid jamming, and has a 1 year of service life, which has been proved many times. 1. The hydraulic cartridge relief valve has an oil storage chamber and a buffer device inside the valve body, an adjusting nut outside the valve body, an adjusting screw cylinder inside, and a limit cavity, limit column, and a movable adjusting plate inside the adjusting screw cylinder. The screw connection between the adjusting screw barrel and the adjusting nut runs through the inside of the oil storage chamber. 2. The hydraulic cartridge relief valve has a built-in pressure regulating spring, one end is connected with a movable regulating plate, and the other end is connected with a piston. 3. The valve sleeve and threaded connection sleeve adopt the middle floating connection mode to avoid jamming. AAK hydraulic cartridge relief valve, the benchmark is HAWE, under 450 bar high pressure, it is safe for more than 1 year, welcome to try it! https://www.aakindustry.com/info-detail , /cartridge-relief-valves-aak525

This week, we’d like to introduce a hydraulic solenoid cartridge valve equivalent to HydraForce SV12-34. It is a solenoid operated, two position, three way, direct acting spool valve. Last January in 2022, a customer in Russia found AAK when looking for a hydraulic cartridge valve manufacturer in China on Google. She sent us an inquiry for 10 pcs of HydraForce cartridge valve SV12-34, along with several other HydraForce standard parts. However, AAK did not have existing programming for SV12-34 at that time and did not quote. Instead, the customer placed trial order for the other models.   This January in 2023, the customer checked with us again if AAK is willing to develop SV12-34 as per their original samples. Although they can buy SV12-34 from other hydraulic cartridge valve manufacturers in China, they do not trust their quality. Because the quality of the other trial orders shipped by AAK last year was very satisfying, they want to develop SV12-34 with AAK. In March, the development was finished and delivered.   Last week, we were very happy to learn from the Russian customer that the E- SV12-34 Solenoid Cartridge Valve developed by AAK is running very smoothly, the quality is very stable. They are going to ask AAK to develop more and more new models.   AAK hydraulic solenoid cartridge valve E-SV12-34 two advantages: 1. Pressure Rating 207 bar (3000 psi), benchmarking HydraForce 2. Its service life is 2 times that of its domestic peers   Technical parameters of AAK E-SV12-34 hydraulic solenoid cartridge valve: Pressure Rating: 207 bar (3000 psi) Flow Rating: see graph Max. Internal Leakage: 350 cc/min max. at 207 bar (3000 psi) Temperature: - 40℃ ~ + 120℃ (Std. Buna N Seals) Cavity: VC12-3   AAK E-SV12-34 hydraulic solenoid cartridge valve, benchmarking HydraForce SV12-34, has been approved by customer in Russia. You are welcome to give it a try.   AAK HYDRAULIC CARTRIDGE VALVES (724) 2023-11-27 https://www.aakindustry.com/info , -detail/solenoid-cartridge-valves-aak724

This Monday, we launched a hydraulic cartridge relief valve equivalent to HydraForce standard part RV08-20. It is a screw in, cartridge style, direct acting, poppet type, hydraulic relief valve intended for lower flow circuits requiring low internal leakage. The features of this hydraulic cartridge relief valve: Adjustments cannot be backed out of the valve. Variety of pressure adjustment options including non-adjustable factory preset. Optional spring ranges to 248 bar (3600 psi). Rapid response to pressure changes. Optional bi-directional pressure (requires bi-directional pressure seal option). Compact size. A customer in Turkey placed a test order for 10 pcs last June in 2022. After 1 year of testing, it proves that the function and performance of AAK hydraulic relief valve benchmarked the quality of HydraForce RV08-20. Today, we received their annual order for 1,000 pcs of qty. AAK hydraulic cartridge relief valve 2 advantages: 1. Internal leakage: 5 drops/min, benchmarking against HydraForce 2. Its service life is 2 times that of its peers Technical parameters of AAK E-RV08-20 Hydraulic Cartridge Direct Acting Relief Valve: Max. Operating Pressure: 250 bar (3625 psi) Flow: See PRESSURE DROP VS. FLOW graph Internal Leakage: 5 drops/min max. at to 80% of nominal setting Operating Fluid Temperature: - 30 °C to 100 °C (with Standard Buna N seals) Cavity: 08-2  The newly launched AAK E-RV08-20 direct acting relief valve, benchmarking HydraForce RV08-20, has been approved by customer in Turkey after 1 year of testing. You are welcome to try it out. AAK HYDRAULIC VALVES (614) 2023-06-26 https://www.aakindustry.com/info , -detail/relief-valves-aak614

Gaylord comes from Holland and is an old customer of AAK hydraulic valve. Some time ago, he emailed me to ask if AAK could optimize a hydraulic direct acting cartridge relief valve. After communication, I learned that at the beginning of the year, they had an order for a hydraulic power unit for high-precision machine tools, which used a hydraulic direct acting cartridge relief valve. Gaylord chose an Indian hydraulic cartridge valve manufacturer to make samples, and the equipment debugging was not smooth. The hydraulic direct acting cartridge relief valve had unstable overflow liquid, forming a jet, especially under low pressure, the stability of the system was poor. Although the function test of the valve was normal, it was still necessary to optimize the hydraulic direct acting cartridge relief valve, but 2 weeks later, the original manufacturer still had no solution, and Gaylord contacted me. According to his hydraulic system schematic diagram and the drawing of the original hydraulic direct acting cartridge relief valve, AAK engineers found the hidden danger of the original structure. Gaylord sent the PO of the test order. After 50 days, AAK sent 10 samples of hydraulic direct acting cartridge relief valves. A month later, Gaylord sent us an email. The equipment was adjusted smoothly. Under low pressure, the system was stable. The customer was also satisfied with the prototype. His engineers also admired the brains of AAK technical team. AAK hydraulic direct acting cartridge relief valve has good stability under low pressure conditions. The key lies in its unique structure: 1. The valve spool, spring, plunger and pressure regulating knob are successively installed in the cavity of the hydraulic cartridge relief valve body. The valve spool contacts the valve seat under the elastic force of the spring, and relies on the elastic force of the spring and the back pressure of the overflow port to balance the hydraulic pressure generated by the oil inlet. 2. The original poppet valve spool is changed into an integral ball type valve spool, and an annular gasket is set between the ball valve spool and the spring. The ball valve spool can automatically adjust the axial angle relative to the centering bearing, which improves the stability of the valve and ensures the low pressure stability of the hydraulic system. 3. Before assembly, the standard steel ball is used to punch the runner port and gasket port that contact the steel ball. The original wire seal is changed to ring seal to improve the sealing performance, so as to ensure the reliable contact between the gasket and the steel ball and realize the stable overflow function. AAK hydraulic direct acting cartridge relief valve, is also stable in low pressure, you can also try a small order! https://www.aakindustry.com/info-det , ail/relief-valves-aak450