Valves

The supplier who have cooperated for 4 years have failed to solve the problem of valve hole deformation caused by the assembly force of hydraulic flow control valve for 4 times of proofing. After AAK changed the process, not only did the accuracy of the hydraulic flow control valve hole reach the standard, but also the operating efficiency of hydraulic system equipment was improved by 5%. This is the first time for Thomas to receive such a surprise from a Chinese hydraulic valve manufacturer. Thomas is from a hydraulic company in the United States. He has been in contact with me for 3 years. In addition to quoting prices and sending hydraulic valve samples several times, he has never placed an order. I laugh at myself that fate has not come. 3 months ago, a PO for hydraulic flow control valve worth more than 20,000 US dollars was sent to us suddenly, which scared me. It was turned out that a supplier who had cooperated with him for 4 years, could not solve the problem of this hydraulic flow control valve even after 4 times of proofing. Under the assembly force of 90N • m * 4, the deformation of the valve hole reached 0.013mm, which did not meet their accuracy requirements, and the original manufacturer had to discuss the delivery date again because of the several failures of the hydraulic flow control valve samples. Thomas realized that the manufacturer had to be replaced, so he contacted AAK. Thomas said that he had been tracking AAK for the past 3 years because his company required that any new supplier should have a 3-year investigation period. Every time AAK sent samples, he would be surprised. He also looked forward to the surprise of the hydraulic flow control valve this time - the sample time and the sample quality. He also reminded me that several suppliers have given up to try directly before he chose the current supplier. I realized that this hydraulic flow control valve PO was a hot potato. If it was messed up, the fate of 3 years would be zero. Is it a surprise or a fright? We have to fight. The AAK technical team separated the drawings of the hydraulic flow control valve step by step and realized that it was really difficult to process this hydraulic flow control valve, but they also had ideas. 3 weeks later, the master of the sample fed back that the deformation of the hydraulic flow control valve bore was still not up to the standard. Moreover, excessive wear of calipers and oilstones leads to low honing efficiency, and the scrap rate reaches 3%. Even if the sample is successful, the mass production is also a hidden danger, and the production process must be changed. After 5 days, the master tried to pre assemble the hydraulic flow valve body and left it for 2-3 days. Before honing, rough reaming with diamond reamer is used to correct the roundness deviation of the valve hole of hydraulic flow control valve due to assembly preload and creep. The whole honing time is shortened from 210s to 60s. With the improved production process, the production efficiency was increased by 150%, and the scrap rate was reduced to 0.5%. After 5 weeks, 12 hydraulic flow control valve samples were sent out. 2 weeks later, Thomas informed by email that the technical parameters of AAK hydraulic flow control valve had been confirmed, especially the accuracy of the valve hole, which surprised him. For the hydraulic flow control valve that the original manufacturer could not fix for 4 times, AAK was successful at one time. What made his engineers more happy was that the operating efficiency of the hydraulic system of the equipment equipped with AAK hydraulic flow control valve increased by 5%. This is the first time to receive such a surprise from a Chinese hydraulic valve manufacturer. AAK hydraulic flow control valve brings only pleasantly surprise, not frightening surprise. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak354

Recently, hydraulic manifold manufacturer AAK received a new message from Mike, who works at a listed company in the United States. According to his introduction, they usually purchase hydraulic cartridge valves from India, produce manifold blocks from local hydraulic manifold manufacturers in the United States, and then assemble them for sale to end customers. 2 years ago, they attempted to work with hydraulic manifold manufacturers in China. Recently, a hydraulic manifold with valve hole 2μm accuracy was still not confirmed yet with any hydraulic manifold manufacturer after over 1 month, which made him very anxious. After communication, we learned that Mike had tested samples at 3 hydraulic manifold manufacturers, all of which were not approved due to the 2μm accuracy valve hole. I told him that the key to this accuracy lies in the subsequent precision machining. I also asked him curiously why he chose India instead of purchasing from Chinese hydraulic cartridge valve manufacturers. Mike said that 8 years ago, their cartridge valves were produced by the preferred Chinese hydraulic cartridge valve manufacturer, but after being disappointed several times, they chose an Indian hydraulic cartridge valve manufacturer. I felt a bit under pressure. If the 2μm accuracy valve hole can not be achieved by hydraulic manifold manufacturer in China this time, will Mike also choose Indian hydraulic manifold manufacturers in the future? Half of AAK's American customers are abandoning Indian hydraulic cartridge valve manufacturers in favor of AAK. If AAK solves Mike's difficulties of the manifold this time, I believe AAK will also be his new supplier of hydraulic cartridge valves in China. I sent him a video about precision machining of valve holes. Most hydraulic manifold manufacturers choose forming tools for the machining of valve holes, which are formed by machining centers in one go, neglecting the precision machining process of valve holes, and affecting the accuracy of valve holes, this kind of process is no longer feasible for 2μm accuracy valve hole. Mike requested AAK to make two samples and they were sent out 35 days later. For this 2μm accuracy valve hole, AAK use Germany's Gehring high-precision CNC honing machine for precision machining. Our first step is to activate the equipment's online measurement system to detect the precise position of the fixture and avoid precision deviation caused by residual debris. This small detail is almost ignored by the majority of hydraulic manifold manufacturers. During the honing process of the valve hole, the travel speed reaches 60m/min and the detector is installed. Hydraulic manifold manufacturer AAK, has targeted process design, and its own small details. You can also give it a try! AAK HYDRAULIC CARTRIDGE VALVES (690) 2023-10-10 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak69 , 0

Yesterday, my old friend Henry left a message to me: Why can't some Chinese hydraulic valve manufacturers understand my logic? This is not the first time I have heard such complaints from overseas guests. There are also many hydraulic valve peers who often joke about what the foreigner thinks. Is he from the moon?   Without same worldview as you, of course, he is not on the same channel as you. Look at the world first, then you can have a world outlook. As the old saying goes, reading thousands of books and traveling thousands of miles means reading a group of people, reading a city or a country, not looking for similarities but feeling different. The more places you travel, the more you can understand how different people are. If you regard your little insight as 100% correct logic, how can you understand the completely opposite logic? Different countries and people have completely different views and ideas on a matter. One time, when I was settling accounts for a US$93.00 bill at a supermarket in Vancouver, Canada, I used to pay US$100.00 and US$3.00, and I think you can give me 10 dollars. But the cashier looked at me in surprise, kept saying more, and then firmly returned US$3.00, and then pushed the $93.00 goods to me. After a long time of searching, he gave me the rest of the change US$7.00.   It was very shocking at that time. Later, I gradually understood that the way they changed their change was like this. It turns out that there are great differences in the way of thinking and living habits between people in this world. What you take for granted is completely incomprehensible to others. What you take for granted is actually just habit. Many American universities have no doors. You can drive directly to the downstairs of the dormitory when you drive. Stanford and Harvard have no doors. In China, there are not only doors, but also gatekeepers. In Seattle, I made another mistake and waited for half an hour on the street. There was no taxi. It turns out that most Americans have cars. Taxis don't run empty on the road. You need to make an appointment. In China, taxis are readily available. If you stay in a place for a long time, you will naturally bring your habits here, and you should think that every place is the same. But New York is different. Taxis are everywhere on the streets.   The subway in Munich, Germany, has no ticket checker or gate. In China, there will be a gate to check tickets when you take the subway. There is no gate and no one checks in. Is it possible to enter without buying a ticket? It has a system that ticket inspectors will randomly check on the subway. If it is found that you have not bought tickets, you will be severely fined. Suppose the subway ticket is 3 dollars. If you are drawn, you will be fined 300 dollars, which will also affect your social reputation. It uses the heavy punishment system to stop all people who are not aware of it, instead of using the gate. This logic is a strict punishment system in the late stage, but the control cost in the early stage is low. Different countries have different cultures and different systems. The more you see, the more you can understand the difference, and the more inclusive you are, rather than complacent in your own logic. I don't agree with you because we have different beliefs. I support you because I understand your faith. If you have this attitude, you will have a different world outlook. The significance of travel is not to find similarities, but to feel different. Every time you travel, you look at the outside world with insight, look at your heart with reflection, and then bathe in the differences of the world. Even if life is boring, don't forget to go far away. Even though hydraulic valve customers are all over the world, don't forget the different world outlook. AAK Hydraulic Valve, walk into your world view, in your logic. https://www.aakindustry.com/info-det , ail/hydraulic-valve-manufacturers-aak353

Santiago is from Spain. He has been a purchaser of the company for 3 years. His boss trusts him very much. Unexpectedly, a hydraulic counterbalance valve overturned him. In the second half of last year, one of their hydraulic cylinders was complained by the customer because of shaking. The engineer judged that the hydraulic counterbalance valve used was abnormal, but the reason was unknown. After receiving the defective hydraulic counterbalance valve, the original manufacturer found that the internal pressure spring had failed, resulting in the slow response of the hydraulic counterbalance valve. This is the best pressure spring of the original manufacturer, but it still could not withstand the impact of 450bar high pressure and high frequency. Santiago had to change the manufacturer of the hydraulic counterbalance valve. After more than a week, no manufacturer was able to guarantee that the valve would not fail under the high pressure of 450bar for more than 1 year. It had been nearly 2 weeks, and there was no solution to customer complaints. Santiago was under great pressure. Santiago accidentally found AAK Hydraulic Valve in Google. He left a message on the AAK website asking whether the pressure spring of the hydraulic counterbalance valve would not fail for more than 1 year under the high pressure and high frequency working condition of 450bar? According to his drawings and working conditions, I told him that if the German HAWE was used, it would be 100% OK, but the quantity was too small, and HAWE would not necessarily accept it, and the cost was not low. AAK has a similar hydraulic counterbalance valve. Let's see if it can be a substitute first? 3 weeks later, Santiago informed that the AAK hydraulic counterbalance valve could be installed with their hydraulic cylinder and operated normally. But he seemed worried that it would not last long. I told him that Germany HAWE is the first brand of hydraulic valves in the subdivision field of high pressure resistance. The function of AAK hydraulic counterbalance valve benchmarks HAWE, which has been shipped for many times. The fact has proved that there is no repair report for 1 year, and the pressure spring can not lose efficacy for more than 1 year. Why dare I say so? The pressure spring of AAK hydraulic counterbalance valve is made of 60Si2CrVA alloy steel. At the same time, in combination with special heat treatment process, 60Si2CrVA pressure spring steel is heated to 860 ° c, kept for 20-40 min for austenitizing, and then subjected to short-term high-temperature water cooling quenching to room temperature. The comprehensive properties of the treated 60Si2CrVA spring steel have been improved by at least 2 times, especially the strength and toughness of the pressure spring, which quality far exceeds most springs. Most hydraulic valve manufacturers of hydraulic counterbalance valves may be able to find good materials, but they cannot do well in heat treatment. Yesterday, Santiago sent an inquiry for another high pressure resistant hydraulic counterbalance valve and told me that the last hydraulic counterbalance valve benchmarking HAWE had been used for almost 1 year, as promised by AAK, and there was no complaint, so his boss specially requested that AAK should be the first choice of the inquiry and sample for all high pressure resistant hydraulic valves. I know that AAK has conquered another high-quality customer by virtue of its manufacturing quality. AAK hydraulic counterbalance valve, benchmarking HAWE, no failure for more than 1 year, you can also have a small trial! https://www.aakindustry.com/info-det , ail/hydraulic-counterbalance-valves-aak352

Arno comes from England. They have a special hydraulic manifold block, which includes 13 groups of M32 threaded holes, and all of them are stepped holes. At the same time, there are cross holes, straight holes, and bypass holes. The hole size is required to be more than 8. Compared with the hydraulic manifold blocks with 10 groups of normal threaded straight holes, it is not only complex in structure, but also 20% higher in precision. Arno knew that it was difficult, so he arranged 3 hydraulic manifold block manufacturers for proofing, which lasted 60 days, but all of them failed to meet the standard. This is a test order of hydraulic manifold block from an old customer. Arno wants to struggle again. Due to time constraints, he does not dare to use a new hydraulic manifold block manufacturer. His old hydraulic manifold block supplier is also unreliable. This makes Arno, who has eight years of procurement experience, a little overwhelmed.   When Jone introduced Arno to me, I had a hunch that this hydraulic manifold block was not simple. Because the PO of hydraulic manifold blocks given to me by Jone is a challenge every time. AAK engineers pondered over the drawing of hydraulic manifold block sent by Arno, and it is really difficult to process, with very high precision. There are not only many pore systems, but also many deep holes, more than 20 groups of Φ3、 Φ4 deep holes, with a length diameter ratio greater than 25. For M32 threaded holes of stepped holes, the coaxiality between holes is required to be 0.02mm, and the coaxiality between threads and holes is required to be 0.045mm. This complex pore system structure is like the distribution of the nervous system of the human brain. Doctors without more than 10 years of experience in brain surgery may not be confident to operate on the operating table.   AAK technical team, after 3 days of internal research and discussion, the plan has been worked out, and our chief engineer will handle the knife, starting from the production drawing of the hydraulic manifold block. However, I replied to Arno that AAK was only 90% sure that the sample of this hydraulic manifold block was successful, and the cost was not low. Maybe Arno hesitated and didn't give any reply for 3 days. On the fifth day, AAK received the development fee paid by him. He mentioned that Jone told him that when AAK said it was 90% sure, it means that there was basically no problem. After 20 days, AAK sent 4 hydraulic manifold block samples. 4 weeks after sending the samples, Arno placed a PO for hydraulic manifold block worth 80,000 US dollars. He also told me that the hydraulic manifold assembled with AAK hydraulic valve block was successfully debugged, and the customer was very satisfied. He emphasized that the quality of the batch order must be stable. I told him that as long as your customer is satisfied with the quality of the hydraulic manifold block sample, there will be no worry about the quality of the batch order, because the process and processing methods adopted by AAK guarantee the stability first:   1. For special hole system processing, AAK follows the principle of small hole priority, customizes alloy fried dough twist drill tools with large chip holding groove and good toughness, and solves the problem of small hole system processing by using the drilling cycle technology in combination with the processing method of "high speed, snack knife depth, frequent tool withdrawal". 2. For M32 threaded holes, the combination of rough and finish machining is adopted, and the thread milling cutter is used to replace the alloy boring cutter used by nearly 90% of hydraulic manifold block manufacturers for milling, so as to avoid the problem of coaxiality out of tolerance caused by manual tapping due to tap deflection. 3. AAK has designed a group of coaxiality gauges for measuring the thread hole system to assist in machining, ensuring the datum requirement of coaxiality of 0.02mm, and further improving the dimensional form and location tolerance accuracy by nearly 20%.   AAK hydraulic manifold block is not afraid of the pore system like cranial nerves. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-manifold-blocks-aak431

Evander comes from a Greek hydraulic equipment company and has been in the company for 5 years. At the beginning of the year, the hydraulic stretching machine they developed needed to purchase hydraulic directional control valves with large length diameter ratio. He chose to work with a supplier for 3 years to try, and the manufacturer reported that the length diameter ratio of the valve hole of the hydraulic directional control valve is 20:1, and the valve hole Ra is not more than 0.3. He is not confident, but he can try. 2 months later, the test run was not smooth. Indeed, the hydraulic direction control valve was slow to respond, and the manufacturer surrendered. Evander contacted more than another 10 hydraulic valve manufacturers for this hydraulic directional control valve, but all of them are not 100% confident of doing this valve with the length diameter ratio of 20:1. 10 weeks have passed, but the manufacturer has not been determined yet. Evander is very worried. Evander saw an article of AAK on B2B about "Hydraulic relief valve with length diameter ratio of 11:1" and left a message to AAK: Is AAK confident to do a hydraulic directional control valve with the length diameter ratio of 20:1 and Ra is not more than 0.3? My reply: It's right to ask AAK about the length diameter ratio. We have produced 25:1 hydraulic check valves in mass production. It is suggested that he send his drawings of hydraulic directional control valve and AAK directly make samples. If the length diameter ratio is not in accordance with the standard, the development cost will be returned. Evander is happy and nervous. He is happy that the manufacturer has been determined. He is afraid of wasting time. Evander waited for 4 weeks in fear, until his engineer told him that the processing size and accuracy of the AAK hydraulic directional control valve were up to standard, and the test machine was also successful, and Evander was completely relieved. I told him that the hydraulic directional control valve with deep hole is difficult to process. The greater the length diameter ratio, the more difficult it is. Even if it is processed, the precision is a hidden danger. This is also the reason why many hydraulic valve manufacturers surrender. AAK adheres to the size accuracy, geometric accuracy and surface roughness of the valve hole, and optimizes the processing technology. We do in the following way, it is difficult for the general hydraulic valve manufacturers to imitate. 1. According to the blank condition, steel properties, length diameter ratio, determine the drill and fixture, which requires experience and skill. In the 6 procedures of "drilling - expanding - boring - reaming - rigid boring reaming - diamond reaming", the cutting amount and working temperature are strictly controlled. 2. The rigid boring reamer is equipped with a guide at the front and back, ensuring straightness, especially the internal cooling chip removal, ensuring the surface finish of the valve hole. 3. For the processing of this hydraulic directional control valve, the tool change frequency is 3 times of the conventional one, the geometric accuracy of the sample is 0.002mm, and the surface Ra0.2. AAK hydraulic directional control valve, has unique trick on valve hole processing, high precision, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-directional-control-valves- aak35 , 1

When negotiating prices with customers, AAK hydraulic valves often encounter a problem that new customers often think the price is expensive. Due to the different quality of hydraulic valves, the price difference is some big. Sometimes, when we encounter customers who only focus on the price, we have no choice. On the weekend, I went to the decoration market and wanted to buy some paint and paint the background wall. Passing by the Dulux Paint Shop, I saw a conversation between a young sales girl and a middle-aged man. I stopped, listened carefully, and learned a good lesson. Dulux paint is definitely expensive. It's a big brand, and many customers think it's expensive, but this young girl says it's cheap. The young girl is saying, "Your paint usage is 400 square meters. If using other small brands paint, it would be around 24,000 yuan, but if using our Dulux paint, it would cost 48,000 yuan, which is twice as expensive. I also think it's expensive, but in the end, I think it's cheap." This is the opening phrase of this young sales girl, which is very organized. The young girl continued, 'Your renovation will last for 15 years, which means you only need to spend 8 yuan per day to buy over 400 square meters of Dulux brand paint.'. The young girl is very smart and converted the high price of 48,000 yuan into 8 yuan. A principle of 'calculating small accounts, calculating breakdown accounts'. The middle-aged man's expression suddenly became relaxed and he also nodded. The young girl continued, 'Dulux's paint is free of methanol and harmful substances. Spending an extra 4 yuan per day only is to earn health, especially beneficial for your child’. The benefits of Dulux paint were presented to the user, and the middle-aged man nodded again. The young girl continued, 'You have a luxury home worth millions of yuan, and choosing a big brand paint is certainly the best match. You have already spent 10 million, still care about this 48,000?’ In less than half an hour, the middle-aged man paid the deposit, signed the contract, and left. I admire the young girl's move, with the knife in place. On the way back, I pondered the young girl's bargaining skills, which could also be extended to the AAK hydraulic valves. When customers feel that AAK price is expensive, we need to calculate breakdown accounts, such as the service life of AAK hydraulic valves, and discuss the service life with them. For example, if the service life of hydraulic valves in the same industry is 1 year, and the service of AAK hydraulic valves can reach 2 years, after the price is evenly divided to every day, the cost-effectiveness of AAK hydraulic valve prices is shown out. Although AAK hydraulic valves are 20% more expensive, their service life is twice that of other similar valves produced by other hydraulic valve manufacturers in China. AAK HYDRAULIC VALVES (588) 2023-05-21 https://www.aakindustry.com/info , -detail/hydraulic-valves-aak588

Today, we’d like to introduce another Pressure Compensated Proportional Flow Regulator Cartridge equivalent to HydraForce standard part PV70-30. It is a solenoid operated, pressure compensated, spool type, normally closed, priority type proportional flow regulator. The features of this proportional priority flow control valve: Excellent linearity and hysteresis characteristics. Hardened spool and cage for long life. Optional coil voltages and terminations. Efficient wet-armature construction. Cartridges are voltage-interchangeable. Unitized, molded coil design. Coil waterproofing standard. Manual Override option. A customer in Brazil placed a test order for 10 pcs last June in 2022, along with PV72-30. After 1 year of testing, it proves that the function and performance of AAK hydraulic proportional priority flow control valve benchmarked the quality of HydraForce PV70-30. Today, we received their re- peat order for 1,000 pcs, same qty as the repeat order placed for PV72-30 in July. AAK hydraulic solenoid operated proportional priority flow control valve 2 advantages: 1. Internal leakage: 197ml/min Max. at 207 bar (3000 psi), benchmarking HydraForce 2. Its service life is 2 times that of its peers Technical parameters of AAK E-PV70-30 hydraulic solenoid operated proportional priority flow control valve: Max. Operating Pressure: Port 1: 240 bar (3500 psi); Port 2 and 3: 207 bar (3000 psi) Flow rating: 26.5 lpm (7.0 gpm) Regulated, range A, 2-ported 17.0 lpm (4.5 gpm) Regulated, range B, 2-ported 30.3 lpm (8.0 gpm) Regulated, range A, 3-ported 17.0 lpm (4.5 gpm) Regulated, range B, 3-ported 49.2 lpm (13.0 gpm) Maximum input, range A, 3-ported 26.5 lpm (7.0 gpm) Maximum input, range B, 3-ported Internal Leakage: 197 ml/min (12 in³/min) At port 3 with at port 1 (port 2 closed) 207 bar (3000 in³/min) Cavity: VC10-3  The newly launched AAK E-PV70-30 hydraulic solenoid operated proportional priority flow control valve, benchmarking HydraForce PV70-30, has been approved by customer in Brazil after 1 year of testing. You are welcome to try it out. AAK HYDRAULIC VALVES (689) 2023-10-09 https://www.aakindustry.com/info , -detail/proportional-valves-aak689

Bauer is from Brazil, and has purchased hydraulic cartridge valves from AAK for 3 years. A batch of 70 pcs hydraulic flow control cartridge valves had to ship before CNY, due to the epidemic situation, AAK workshop stopped production for 11 days, resulting in the batch of hydraulic flow control cartridge valves not being shipped on time. Bauer understood the situation, because this guy also knew that I was doing my best. It was finally shipped last week, and Bauer was relieved, and can hand over the goods to the customer. In the middle of December last year, Bauer wanted to customize 70 hydraulic flow control cartridge valves. The adjusting knob must be durable and easy to operate. I made fun of him: Did you encounter problem so that you think of AAK cartridge valve? He told me that these hydraulic flow control cartridge valves were purchased from a local cartridge valve manufacturer in Brazil. During the daily equipment maintenance, their hydraulic cylinder customer found that the knob of the hydraulic flow control cartridge valve torque was large, difficult to turn, and inconvenient. The manufacturer of the original hydraulic flow control cartridge valve reported that only the knob of this structure could be used, otherwise it would not be durable. Bauer didn't believe it, so he came to me. AAK engineer disassembled the structure of the original hydraulic flow control cartridge valve, combined with the working conditions of the hydraulic cylinder, and found that the original hydraulic flow control cartridge valve knob can be replaced by a new structure. Bauer asked me to arrange production immediately, and needed to ship before CNY, which means it would have only 30+ days to reprogram and produce 70 hydraulic flow control cartridge valves. I told him that I would go all out, if without accident, it could be shipped before CNY. AAK hydraulic flow control cartridge valve knob system includes positioning rod, adjusting handle, positioning rod adjusting screw and adjusting screw seat. The upper end of the adjusting screw seat is provided with a screw hole that is suitable for the thread of the adjusting screw of the positioning rod, and the upper end of the adjusting screw of the positioning rod is fixedly connected with the handle. This structure is completely different from the concept of the Brazilian cartridge valve manufacturer. It is not only easy to operate, but also more durable. 1.Between the lower end of the positioning rod adjusting screw and the upper end of the valve opening positioning rod, there is an intermediate transition adjustment shaft, and the lower end of the intermediate transition adjustment shaft and the upper end are also provided with a step shaft. 2. The lower end of the adjusting screw seat is equipped with an adaptive adjusting shaft positioning hole. The valve opening positioning rod is a ladder rod with the upper end diameter greater than the lower end diameter. The upper end of the ladder rod is equipped with an adaptive adjusting shaft connecting hole. 3. The valve cover is provided with an upper round hole and a lower round hole which are respectively suitable for the reciprocating dynamic seal at the upper and lower ends of the positioning rod. The upper end of the positioning rod, the lower end of the adjusting screw seat, the side of the intermediate transition adjusting shaft, and the corresponding hole surface on the valve cover form a pressure relief oil chamber of the adjusting screw. The valve cover is equipped with a guide oil passage. The positioning rod is located below the connecting hole of the adjusting shaft, and is equipped with a liquid return oil passage. AAK hydraulic flow control cartridge valve, the knob adjustment has unique skills, you can also try it! https://www.aakindustry.com/info-detail , /flow-control-cartridge-valves-aak503

Lateef, from Sweden, has been engaged in the procurement of hydraulic valves for 3 years and has been quite successful. Last year, however, he stumbled due to a hydraulic pressure control valve used in a hydraulic climbing vehicle. At the beginning of last year, their hydraulic climbing car was complained by customers that it was unable to rise. During after sales service, it was judged that the hydraulic pressure control valve was abnormal, and must be replaced. The original manufacturer refused to be responsible, because it has passed the 1 year warranty period. Lateef was embarrassed after checking, because after the hydraulic pressure control valves were shipped from the original manufacturer to their warehouse, their hydraulic climbing cars were delivered to the customer 4 month later, so the equipment was still within warranty. The boss was unhappy, Lateef was helpless. He tried to raise the warranty period of the hydraulic pressure control valves to 24 months to source new hydraulic valve manufacturers, but no reply from more than 10 manufacturers that he contacted. Lateef went from helplessness to anxiety. Lateef found AAK on B2B and left a message on AAK website: How long is the warranty period of hydraulic pressure control valve? I needed him to provide us drawings for discussion. According to his hydraulic pressure control valve drawing and working condition requirements, it is actually the standard part of SUN hydraulics. AAK has this procedure. I asked why he requires a 24 months of service life for the hydraulic pressure control valve, instead of requiring the number of durability times. Then he told me the above purchasing experience and sent me several hydraulic pressure valves from the original manufacturer. Our engineer found during disassembly that some valve spool cylindrical surface and conical surface, as well as the valve cage inner hole and conical surface are not concentric, which is a problem in accuracy and affects the function. The cone surface of some valve spool is worn, which affects the sealing, and the performance is not up to standard. Lateef was surprised to hear this, because no manufacturer gave him such analysis. I told him that AAK has a similar hydraulic pressure control valve. You can install it on the equipment for testing. If you can install it, you should not worry about customer complaints. He was surprised and happy. More than 10 hydraulic valve manufacturers had no reply, but AAK could send samples directly. 2 weeks later, Lateef informed that the hydraulic climbing vehicle equipped with AAK hydraulic pressure control valve could work normally. He also asked about the warranty period of the hydraulic pressure control valve. I told him that AAK was benchmarking SUN, and its performance was 2 million times. As long as the equipment was used no more than 2500 times a day, there was no problem in 24 months. AAK hydraulic pressure control valve, benchmarking SUN, adhere to 3 aspects, Lateef is completely relieved. 1. The material is strictly selected. The valve spool is made of 20CrNi2MoV from Germany. The wear resistance of the valve spool is more than 3 times that of the material used by other hydraulic valve manufacturers. The other manufacturers may have the performance of 500,000 to 1 million times, while AAK has the performance of 2 million times. 2. The precision is strictly controlled. The valve hole of this model is finely processed by American precision honing machine, and the precision of valve hole of other hydraulic valve manufacturers is 0.8 μm - 1.0μm, while AAK can be 0.6μm - 0.8μm. The precision is increased by 25% - 30%. 3. Strict inspection, equipped with a German Test high-precision measuring instrument for small micropore diameter, fully inspect each valve hole, while most hydraulic valve manufacturers only conduct sampling inspection randomly. AAK hydraulic pressure control valve, not only strict, you can also try a small order! https://www.aakindustry.com/info , -detail/hydraulic-pressure-control-valves- aak3 , 50

Gonzalo comes from Spain and has been purchasing hydraulic valves from Chinese manufacturers for 3 years. At the beginning of last year, they developed hydraulic gantry shears and needed to purchase hydraulic cartridge relief valves. The engineer directly purchased German HAWE standard parts, and the prototype was commissioned and purchased. The boss asked to reduce the purchase cost to match the market price of similar equipment. After comparing prices, Gonzalo selected a hydraulic relief valve manufacturer in Ningbo. 6 months after the equipment was sold, the customer complained that the hydraulic gantry shear was weak. During after sales service, the valve spool of the hydraulic relief valve was found to be worn and could only be replaced. The original manufacturer fed back that the service life of the hydraulic relief valve under 450bar high-pressure working condition was normal for 6 months. The boss was not happy. Gonzalo was under pressure. His engineer said that the service life of the HAWE hydraulic relief valve was no less than 1 year. Gonzalo contacted more than 10 hydraulic relief valve manufacturers, they could not bear high pressure or can not guarantee a service life of more than 1 year. Gonzalo found AAK in Google's China hydraulic valve manufacturers list. When he learned that AAK had engineer from HAWE, he saw hope. According to his hydraulic relief valve drawing, it is not too difficult, just needs to be high pressure resistance and performance. Because we have no program for this HAWE hydraulic relief valve, we need time to develop it. After 45 days, we delivered 80 samples of hydraulic relief valves, and told Gonzalo that if you replace those complained hydraulic relief valves with AAK's, you will have no pressure. A few days ago, Gonzalo sent an email. It has been proved that AAK's hydraulic relief valves can last for 1 year under high pressure of 450bar, more than twice as long as that of the original hydraulic valve manufacturer. In the subdivision field of high pressure resistance, AAK hydraulic valve manufacturing quality benchmark is HAWE, because HAWE is the No 1 of this field. We mainly focus on 3 points. It may be difficult to find the second one, from more than 200 hydraulic valve manufacturers in Ningbo. 1. Strict selection of materials: YG8 cemented carbide is selected for the valve spool of this hydraulic relief valve, and the content of tungsten carbide (WC) and binder cobalt (CO) is the best of the same kind of steel. The wear resistance and impact resistance have been improved by more than 2 times. Under the pressure of 450bar, there is no wear within 1 year. 2. The control equipment: the valve spool of this hydraulic relief valve is finely processed with a Swiss high-precision honing machine. The precision of the valve spool is fixed at 1-2μm, surface roughness Ra0.2-0.3, which is difficult for most manufacturers to achieve. 3. 100% testing: AAK independently developed durability testing equipment, implemented NFPA/T2.6.1 standard, and each hydraulic relief valve was inspected. Most manufacturers conduct selected checks and do not have good testing equipment. AAK hydraulic relief valve, resistant to 450bar high pressure, durable for more than 1 year, benchmarking HAWE, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-relief-valves- aak349

Peter is from Australia. One of his old customers wanted to purchase a special hydraulic flow control valve. Peter realized that the valve hole of this hydraulic flow control valve has high accuracy and is difficult to process. If the surface roughness and cylindricity error cannot be well controlled, it is easy to cause the valve spool to be stuck. As expected, he contacted more than 20 hydraulic flow control valve manufacturers in 3 days, but none of them was confident. The customer has urged the quotation twice, and now even the manufacturer can't be determined. Peter was very worried. Peter wanted to find more hydraulic flow control valve manufacturers in different countries online this time. He accidentally found AAK hydraulic valves and stayed on AAK website for about 20 minutes. With the attitude of trying, he sent me an email. After communication, we learned that his customer was pushing urgently and he needed AAK to quote asap. I didn't make an offer the next day. Maybe Peter thought AAK had surrendered. Later, I told him that most hydraulic valve manufacturers still use traditional processing methods to process the valve hole of this hydraulic flow control valve. According to the requirements of the drawing parameters, they also know that the surface roughness is a threshold. For example, the abrasive particles are easy to be embedded in the workpiece surface, and the cutting is not easy to be separated from the grinding oil, resulting in poor cleanliness of the grinding oil. All these affect the surface roughness. AAK realized this processing pain point as early as 4 years ago and adopted rolling technology to replace the traditional cutting method. I suggested that he communicate with the customer and let AAK directly test the sample. If the sample is successful, it will be quoted. If the sample fails, AAK will bear the development cost. On the 3rd day, Peter accepted my suggestion. After 35 days, 12 samples of hydraulic flow valves were sent out. About 2 weeks later, Peter said that his client confirmed AAK's hydraulic flow control valve. At this time, Peter realized the advantages of AAK and thanked me very much, which helped him face his old customer. Rolling technology and cutting processing are completely 2 different processing methods. AAK tried, solidified and mass produced it 4 years ago. Roll the metal surface with rollers, flatten the convex part of the surface, and bulge the concave part, and then process it into a smooth mirror like surface. The most important thing here is the rolling details. The surface roughness of the valve hole processed by the old experienced technicians will be increased to nearly 1% compared with the surface roughness after grinding, so that RA is 0.10 ~ 0.15, and the cylindricity error is controlled within 0.003. After work surface hardening, the wear resistance is improved, and the fatigue strength can be increased by 30%. There are many advantages, but there are not many manufacturers of hydraulic flow valves using this process, and even fewer can control the details. 3 days later, Peter sent the PO for the hydraulic flow control valve. He told me that the stone hanging in his heart finally fell, and the meal was more delicious. I told him that you only need time to receive the goods. Go to the bar when you need to, and leave the rest to AAK. AAK hydraulic flow control valve, has unique skills with special requirements. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak348

Quentin is from Italy. He is a new purchaser of a company which has cooperated with AAK for 4 years. He is very aggressive, but the first purchase of hydraulic relief valves overturned. At the beginning of this year, a batch of excavators of their company needed hydraulic relief valves, which were standard parts of HydraForce. Quentin asked more than 10 hydraulic cartridge valve manufacturers, and chose one manufacturer that is 60% cheaper than HydraForce to place an order. Six months later, trouble began. A customer complained that the oil pipe of the excavator burst. The engineer realized that it was not just the problem of replacing the oil pipe. It was found through inspection that the hydraulic relief valve was sluggish during operation, resulting in the instantaneous formation of peak pressure in the system, which caused the oil pipe to burst. The inner wall of the valve hole of these hydraulic relief valves was worn. However, the manufacturer of the original hydraulic relief valves said that it was caused by the unclean hydraulic oil, which had nothing to do with them. Quentin was afraid to take responsibility and dared not report to his boss. Quentin was very nervous. He contacted several manufacturers of hydraulic relief valves, but no gain. Carter, another old purchaser, saw that he was at a loss and suggested that he has a try with AAK hydraulic valves. Quentin emailed me and asked if the program of this HydraForce valve was available. Only then did I know that his first purchase of hydraulic relief valve was not smooth. I sent him the pictures and technical parameters of the hydraulic relief valve. The next day, he asked me to deliver 50 hydraulic relief valves first to solve customer complaints urgently. Two weeks later, Quentin informed that the replacement work was completed and the excavator could work. Quentin said that although the price of AAK is 30% higher than that of the original manufacturer with hidden quality problems, it is still 30% cheaper than that of HydraForce, and the surface treatment of AAK hydraulic relief valve is more textured than that of HydraForce. I told him that AAK hydraulic relief valve not only has the appearance value, but also has the performance of no less than 2 million times. The reason why AAK hydraulic relief valve can be compared with HydraForce is that AAK insists on selecting the most suitable steel, even if the processing cost is 2-3 times more expensive, it should also choose the best. AAK can't do anything that is not good enough, let alone give it to users. We always adhere to the following 3 points: 1. The material selection is "cleanliness". The A + material is used to replace the A material of the standard part. For example, 3Cr3Mo3W2V is used to produce the valve body of this hydraulic relief valve. Compared with similar steels, its hardness, strength, wear resistance and toughness have all improved to a new level. It ensures the impact resistance of the hydraulic relief valve during the working process of the system, and stands guard for the performance of 2 million times. 2. The selection of equipment is "guaranteed". The valve hole of the hydraulic relief valve is precision machined with Swiss high-precision honing machine, and the accuracy of the valve hole can reach 1.0μm, while most manufacturers of hydraulic relief valves are in the range of 2μm. 3. For surface treatment, AAK insists on using galvanized nickel alloy to replace the galvanized treatment of HydraForce. It is not only beautiful, but also textural. Quentin told me in private that in his conversation with me, he was more determined to do a good job in purchasing. This time, he solved the customer's complaints in time, and his boss was happy to see him. AAK hydraulic relief valve surpasses its domestic counterparts and benchmarkes with HydraForce. You can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-relief-valves-aak347

Many Chinese hydraulic manifold manufacturers are quite tired because they think too much and do too little. There are also Chinese hydraulic manifold manufacturers who cannot digest customer inquiries and still compete. A person's fatigue is also due to their desires and abilities, which cannot be directly proportional.   Little birds build nests in dense forests, all they need is a branch; The groundhog only needs to fill its stomach when it comes to the big river to drink water. The little dog is following you, what he needs is just a touch from you. Similarly, what people really need is actually very few, but people like to be greedy. So why live so tired? Because your desires are endless. The fatigue of Chinese hydraulic manifold manufacturers is also due to the desire for orders.   An inquiry is simple for Chinese hydraulic manifold manufacturers, but when the order arrives, can it be easily processed or digested? This is not only related to manufacturing quality, but also to daily production capacity and your goodwill.   Chinese hydraulic manifold manufacturer AAK focuses on manufacturing quality, including material selection, process settings, processing, equipment, and production line stability. Each process has standards and quality inspection. The manufacturing quality of AAK hydraulic manifolds lies in these 5 points. The manufacturing quality of hydraulic manifold is slower, more clumsy, and more solid than that of intelligent people. There is no shortcut on this road. There is no safe haven either. Without manufacturing quality as 1 takes the lead in the front, and any additional 0 added later will eventually return to zero. Just like in life, at the top of the waves, can you stand still? At the bottom of the waves, can you hold still?   A person's evil is usually obsessed with using bottomless methods to reach their goals. The evil of a Chinese hydraulic manifold manufacturer is also obsessed with taking orders without a bottom line. Whether it is a Chinese hydraulic manifold manufacturer or an individual, we must be kind. Good has no specific direction, whether for customers, suppliers, employees, or friends. Those who are capable rely on themselves for success, while those who are good rely on heaven for success. Heaven does not refer to God or immortals, but to the uncertainty of what one relies on.   Chinese hydraulic manifold manufacturer AAK has 1 inquiry every day, and 1-2 orders arrive every week, neither seeking nor greedy.   AAK HYDRAULIC VALVES (688) 2023-10-08 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers-aak688