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Consuelo is from a hydraulic equipment manufacturing company in Spain, and has been engaged in procurement for less than 3 years. At the beginning of last year, their excavator was complained. After checking, it was judged that the hydraulic cartridge counterbalance valve was leaking, and the valve spool was worn. According to the feedback from the original hydraulic cartridge counterbalance valve manufacturer, the valve spool is made of 12L14 free- cutting steel, which is commonly used in the industry. The only solution is to replace the hydraulic cartridge counterbalance valve with new ones, which means that the valves will need to be replaced every 8 months. Consuelo knew that his boss and customer would not be satisfied. He tried to find a new manufacturer of hydraulic cartridge counterbalance valve, but failed. Consuelo found AAK on Google, and noticed that AAK had introduced some customer cases about the difficult and complicated problems of the hydraulic cartridge counterbalance valve, and sent an email asking: Can AAK hydraulic cartridge counterbalance valve achieve no internal leakage and be durable for more than 1 year? After communication, we learned that the hydraulic cartridge counterbalance valve produced by the original cartridge valve manufacturer had internal leakage after being used for about 8 months. According to the schematic diagram of the hydraulic system provided by Consuelo, combined with the working conditions of the excavator, AAK engineers found that it was not only the problem of changing the material of the valve spool, but also the problem of optimizing the structure of the original hydraulic cartridge counterbalance valve. After 40 days, AAK sent 6 samples of hydraulic cartridge counterbalance valve. Last week, Consuelo said that he would purchase 120 hydraulic cartridge counterbalance valves to replace the ones currently used on the excavators. The excavators installed with AAK hydraulic cartridge counterbalance valve have been used for 10 months, and there is no complaint of leakage. AAK improved the original hydraulic cartridge counterbalance valve from the 3 aspects: 1. Change in material selection. AAK hydraulic cartridge counterbalance valve spool is made of 20CrNi2MoV high carburized bearing steel, which is more suitable. We never consider the general standard of the industry, but what material is most suitable for the working condition. 2. The change of the seal, the inner cone of the check valve spool and the lower end face of the valve seat form a line seal, the outer cone of the control valve spool and the through hole on the valve seat form a line seal, and the lower through hole section of the relief valve spool and the valve seat form a line seal. Three lines are sealed to ensure no leakage. 3. With the change of valve operation, the overflow valve spool slides to control the on-off of the oil outlet and the oil return port, with the help of the coordination of the control valve spool and the valve seat. Whether the load rises or falls, the check valve spool is opened and closed from twice to once, and the valve spool life is doubled. AAK hydraulic cartridge counterbalance valve, has no internal leakage and is durable. You can also try it! https://www.aakindustry.com/info-detail , /cartridge-counterbalance-valves-aak505

4 hydraulic valve manufacturers, made samples for 5 samples, but none of them were able to produce the hydraulic cartridge check valve with a length diameter ratio of 25:1 successfully. AAK adopted a special slender shaft processing technology, and the sample passed the testing successfully at one time, the parameters of the hydraulic cartridge check valve were up to standard, and the surface roughness was improved by 0.3%, and the geometric accuracy was improved by 0.8%. German customer was satisfied. Cheney is a senior buyer of hydraulic cartridge valves in Germany. He is good at dealing with different abnormal conditions of hydraulic valves, such as stuck valves, leaks, cavitation etc. But this time, he was trapped by a hydraulic cartridge check valve with the ratio of shaft length to diameter greater than 25. Four hydraulic cartridge valve manufacturers, made samples for 5 times, spent 10 weeks, but without any results. Compared with conventional valves, this slender shaft hydraulic cartridge check valve has poor rigidity, easy deformation, large vibration, difficult cutting control, and strict requirements for processing technology. This is the root cause of the failure of most hydraulic cartridge check valve manufacturers. Cheney sourced for nearly 1 week, but still no hydraulic valve manufacturer is willing to take over. When he was browsing B2B, he saw AAK and noticed that AAK had an article about the hydraulic valve with long length diameter ratio, so he left us a message. After several rounds of email communication, Cheney seemed to see the hope and sent the drawing of the hydraulic cartridge check valve to us. 2 weeks later, AAK sent 8 samples of slender shaft hydraulic cartridge check valve. 7 days later, Cheney emailed that the parameters of AAK slender shaft hydraulic cartridge check valve were up to standard, its functions were normal, its surface roughness was improved by 0.3%, and its geometric accuracy was improved by 0.8%, which surprised their engineers. The reason why AAK succeeded in the first time is due to following 3 points: 1. Selection of drill bit and fixture: match the appropriate long drill bit from 3 aspects of hardness, heat resistance and impact toughness, and adopt the clamping method of one clamp and one top, at the same time use flexible movable center to compensate thermal deformation elongation, so that the slender shaft can stretch freely after being heated to avoid thermal deformation. 2. Control of cutting amount and cutting fluid: reasonably select the drilling amount according to the length diameter ratio. During cutting, the cutting fluid shall be fully poured to inhibit the rise of working temperature, thus inhibiting the thermal deformation. 3. Sharp tool control: the tool change frequency is increased by 3 times. Effectively reduce the friction and heat between the trolley knife and the workpiece, and control the thermal deformation from the source. In recent years, AAK has successively supplied a Spanish customer with hydraulic cartridge check valves with the same length diameter ratio, and it is repeatedly ordered 4 times a year. Although it is difficult to machine the hydraulic cartridge check valve with long length diameter ratio, AAK has unique skills. The slender shaft hydraulic cartridge check valve of AAK, is purchased by a Spanish customer 4 times a year. Welcome to have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-check-valves-aak358

A few days ago, I received samples of hydraulic directional control valves produced by other manufacturer from my old customer Ahmik. Ahmik is from Israel and started purchasing hydraulic directional control valves from AAK 2 years ago. In August of the previous year, they developed a high-pressure hydraulic manifold and needed to purchase a hydraulic directional control valve. Ahmik purchased the hydraulic directional control valve from a manufacturer that has been cooperating for 3 years. After 6 months, there was leakage in the valve, especially severe wear and tear. The original hydraulic valve manufacturer stated that the high-pressure hydraulic directional control valve can only hold a service life of 6 months at present. Ahmik didn't quite believe it, so he sent me a sample to see if it could achieve a service life of over 1 year. We disassembled the original manufacturer's hydraulic directional control valve sample and frankly, the manufacturing quality is not poor. Why not wear resistant? Based on the hydraulic schematic and operating instructions provided by Ahmik, we understand that the problem lies in the material selection of the valve body. The original manufacturer used 45 Cr material to produce valve bodies, which is not a big mistake, because this is a commonly used material for valve bodies. AAK never follows industry trend in material selection and strictly selects materials according to the working conditions. If the service life of this hydraulic directional control valve needs to be over 1 year without any damage, while ensuring machining accuracy, efforts need to be made on the material of the hydraulic directional control valve, especially the wear resistance of the valve body. I recommended Ahmik to use 3Cr3Mo3W2V hot working die steel to produce the valve body of this hydraulic directional control valve. If the original manufacturer was unwilling to use this material or if the processing is difficult, AAK can complete it. 3 days later, Ahmik asked me to copy the original hydraulic directional control valve sample, because the original hydraulic valve manufacturer is not confident in achieving a service life of more than 1 year. Indeed, the processing difficulty of 3Cr3Mo3W2V hot work mold steel is higher than that of 45 Cr, and the accuracy error is large. However, AAK has already had multiple factual cases of processing this material. The hardness and wear resistance of 3Cr3Mo3W2V hot working die steel are the preferred choice for producing high-pressure hydraulic valve bodies, but most hydraulic valve manufacturers in China choose 45 Cr. This material also has one characteristic, the entire cross-section and mechanical properties of the material are very consistent, ensuring that the valve body is more resistant to impact and corrosion during the system operation process, and is safe for 1 year. AAK hydraulic directional control valve, under high pressure, is still safe for 1 year, you can also give it a try! AAK HYDRAULIC VALVES (590) 2023-05-23 https://www.aakindustry.com/info , -detail/directional-control-valves-aak590

At the beginning of last year, Leander contacted me under the introduction of one of our old customers in Greece. I learned that their company sold a batch of large excavators to South America. During operation, the pressure supply is often insufficient. They know that there is a problem with the hydraulic cartridge pressure control valves, especially the valve body is obviously worn. The original manufacturer of the hydraulic cartridge pressure control valve was evasive and regarded that the wear was caused by the high-frequency and high- pressure work of the excavator, because the valve body was made of 11L44 steel, which was the industry standard. Leander was helpless and his boss was angry. The boss asked him to find the manufacturer of the hydraulic cartridge pressure control valves with durability of more than 2 million times. Leander wasted more than a week but without any gain. According to the drawings and working condition parameters of the hydraulic cartridge pressure control valve provided by Leander, the material selection is the key if the service life of this hydraulic cartridge pressure control valve is more than 2 million times. The next day, I replied to Leander that AAK was 95% confident, I couldn't say 100%. Leander sent the trial order later. 35 days later, the trial order of the 50 pcs of hydraulic cartridge pressure control valves were sent. More than 1 month later, Leander informed by email that AAK hydraulic cartridge pressure control valves had been installed on the excavator. Their engineer specially tested the performance, which can be achieved 2 million times. I told him that AAK manufacturing quality benchmarked HydraForce, and the performance of 2 million times is not a slogan, but a fact. Leander is relaxed and no longer worried about customer complaints. For the hydraulic cartridge pressure control valve with more than 2 million times, AAK separated the peers from 3 aspects: 1. The valve body of this hydraulic cartridge pressure control valve is made of Japanese SCM415 steel, and its mechanical property is more than 70% stronger than 11L44 steel. After carburizing and heat treatment, its hardness is more than HRC66, and its wear resistance is more than 3 times higher, ensuring wear resistance of more than 2 million times. 2.The machining of SCM415 material, is proceeded with special diamond reamer, equipped with American precision honing machine, the precision of valve hole after finishing can be controlled below 0.8μm, the possibility of leakage is eliminated. 3.100% inspection, AAK independently developed durability testing equipment, implemented NFPA/T2.6.1 standard, and each hydraulic cartridge pressure control valve was inspected. Most hydraulic cartridge valve manufacturers conduct spot checks and do not have good testing equipment. Leander told me privately that his boss thinks highly of him more and more, and has suggested him take AAK as their preferred supplier of hydraulic cartridge pressure control valves. AAK hydraulic cartridge pressure control valve, with the performance of more than 2 million times, you can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-pressure-control- valves- , 357

Erasmus is from a hydraulic equipment company in Colombia. He has been purchasing smoothly, but a batch of hydraulic cartridge directional control valves stumped him. The loader sold by their company less than 1 year has been complained of shaking. During after-sales service, it is found on the site that the valve spool of the hydraulic cartridge directional control valve is stuck during operation, which is caused by the deviation of the valve hole accuracy. The original manufacturer advised that there should be not many pieces of hydraulic cartridge directional control valve was stuck and could be replaced, but there were more and more complaints later. The boss was not satisfied with Erasmus's purchase this time, asked him to replace the manufacturer of the hydraulic directional control cartridge valve, and requested that the service life of the valve be more than 18 months. Erasmus contacted more than 10 cartridge valve manufacturers. They either disliked the small quantity or needed 60 days of production. Erasmus became very anxious. Erasmus found AAK hydraulic valve in B2B and left a message to us: Can you produce the hydraulic cartridge directional control valve in 40 days with a service life of 18 months? I guess he encountered problem when he purchased the hydraulic cartridge directional control valves. After communication, I learned his dilemma in purchasing. According to the drawing of hydraulic cartridge directional control valve provided by Erasmus, this is not difficult, but the key is performance. 2 days later, we received the PO for the hydraulic cartridge directional control valve. Erasmus said that although the price of AAK hydraulic cartridge directional control valve was 20% higher than that of the original cartridge valve manufacturer, he still chose AAK because he valued the 18 months of service life. After 40 days, AAK sent 40 samples of hydraulic cartridge directional control valves. Last week, Erasmus informed by email that the AAK hydraulic cartridge directional control valve had been installed on the equipment for 1 year, and there was no customer complaint. Most surprising to his engineers, AAK valve hole accuracy reached 0.3μm, but the original directional control valve manufacturer is above 0.7μm. I told him, if no accident, there will be no worries for 18 months. AAK constantly improves the performance of the hydraulic directional control cartridge valve from 3 aspects. Although the price is 20% higher than that of peers, the service life is twice that of peers. 1. In processing, this hydraulic cartridge directional control valve uses OKK ultra precision machine tool of Japan, and its nano level numerical control system ensures that the processing accuracy can reach 0.01~0.3 μm. The precision of shape and contour is 0.003 ～ 0.1μm. 2. In terms of detection, the German small micropore diameter tester is used to detect the valve hole of each hydraulic directional control cartridge valve. 100% full inspection, and the measurement accuracy is within 0.1μm. 3. In terms of assembly, most of hydraulic directional control valve manufacturers adopt the selective assembly method. AAK uses the unified assembly method, and the assembly efficiency is twice that of peers. Not only fast, but also stable. Although the price of AAK hydraulic directional control cartridge valve is 20% higher than that of its peers, its service life is twice that of its peers. You can also try a small order! https://www.aakindustry.com/info-det , ail/directional-control-valve-aak433

Esperanza is from Spain and has over 1 year of procurement experience from hydraulic cartridge valve manufacturers in China, which has been relatively smooth. At the beginning of this year, Esperanza encountered difficulties in purchasing the CV08-20 hydraulic check valve. She purchased 120 pcs of CV08- 20 hydraulic check valves from an old supplier. After 4 months, 4pcs of the hydraulic check valves were found to have leaks, a less than 2% of leakage. The manufacturer of CV08-20 hydraulic check valves advised that he cannot guarantee that each hydraulic check valve has no leakage, but is willing to offer 4 pcs for free replacement. Esperanza's biggest concern is that the quality of this manufacturer is unstable, and they have to find another hydraulic cartridge valve manufacturer in China. Esperanza left a message on AAK website: Does AAK have CV08-20 hydraulic check valve? Can AAK guarantee that the first order of all 120 pcs of hydraulic one-way valves be leak free? I asked if she had encountered any leakage problem on the CV08-20 hydraulic check valve. After communication, we learned that the original hydraulic cartridge valve manufacturer cannot guarantee that each hydraulic check valve has no leakage. Although the CV08-20 hydraulic check valve is relatively conventional, for manufacturers, the competition lies in the stability of manufacturing quality and the details of subsequent quality inspection. As long as these 2 steps are strictly controlled, it is not difficult for all 120 pcs of hydraulic check valves to have no leakage. After 3 rounds of communication, the PO was confirmed. We shipped the goods at the end of March. Yesterday, Esperanza sent us an email. The CV08-20 hydraulic check valves shipped by AAK have been used for 6 months and no leakage has been found. They need to order another 260 pcs of CV08-20 hydraulic check valves and need the soonest delivery date. I told him that the service life of AAK valve is at least twice that of its original manufacturer. After production, each valve needs to be tested for pressure holding and leakage. The AAK inspection personnel first insert the hydraulic check valve body into the rubber tube of the manual pressure maintaining tester, then pinch the pressure punching airbag, wait until the pressure gauge pointer is at the standard pressure value position, stay for 5 seconds, and observe if there is any change in the pointer. If the pointer does not drop within 5 seconds, it indicates that the valve is holding pressure normally. Second, the hydraulic check valve is installed in the automatic pressure maintaining tester. After startup, the hydraulic check valve is compressed and the pressure value will be automatically displayed on the pressure gauge of the equipment. If the pressure value is fixed for 5 seconds and the pointer does not change again, it indicates that the hydraulic check valve pressure maintaining test has passed. Most hydraulic check valve manufacturers only do one testing on the valve for pressure holding performance, while AAK conduct testing in 2 steps. The first step is to test the valve body to ensure that there is no leakage during the installation process. The second step is to measure the pressure holding capacity of the entire valve, including the fit between the valve spool and valve cage. AAK hydraulic check valve, focuses on stable manufacturing quality, and has 2 tests for pressure holding to avoid leakage. You can give it a try! AAK HYDRAULIC CARTRIDGE VALVES (691) 2023-10-12 https://www.aakindustry.com/info , -detail/check-valves-aak691

ER-MG2-50/100, a high performance MEMS gyro sensor with 0.01-0.02°/hr bias instability and 0.0025-0.005°/√hr angular random walk, is specially designed for north seeking, pointing, initial alignment in logging tools/gyro tools, mining/drilling equipment, weapon/UAV launch systems, satellite antenna, target tracking system and so on. Thanks to the high performance, ER-MG2-50/100 can also used in high precision attitude measuring, stabilization control, positioning, navigating in navigation grade MEMS IMU/ INS, land surveying/land mobile mapping system, railway train system, etc. So ER-MG2-50/100 is a best, cost effective, robust, reliable, small size, light weight, low power alternative of medium-low navigation grade FOG DTG with north seeking, precision attitude measuring , inertial positioning and navigation function. The ER-MG2-50/100 High Performance North Seeking Gyroscope is a single-axis MEMS angular rate sensor (gyroscope) capable of measuring angular velocity up to a maximum of ±100°/s with digital output compliant to SPI slave mode 3 protocol. Angular rate data is presented as a 24-bit word. The ER-MG2-50/100 is intended for north seeking applications. As an advanced, differential sensor design rejects the influence of linear acceleration, enabling the ER-MG2-50/100 to operate in exceedingly harsh environments where shock and vibration are present. The ER-MG2-50/100 is available in a hermetically sealed ceramic LCC surface mount package, and is capable of operating at 5V supply and a wide temperature range (−45°C to +85°C).

Minimum Order: 1 bags

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Minimum Order: 500

20ft Chemical Storage Container Short Term Portable Storage Units Highly Functional Chemical Container with Custom Accessories 20ft Chemical Storage Container Short Term Portable Storage Units 0 Product Description: The specialized design is suitable for the segragated storage of hazardous materials, indoors or in production workshops, and amazingly they can even be used as outdoor central warehouses. The product utilizes a series of technological systems including temperature control, ventilation,and an activated carbon purification system. Other features also include an virtual fire protection system, power distribution & control system, and intelligent management system. Additionally, the sysrem conveniently includes anti-leakage and anti-static systems, lightning protection and an emergency spray system. Special lifting lugs make loading and unloading easy and stackable buckets offer great flexibility for the inter storage space design. The product is also built to withstand explosions, and includes a steel ramp with anti-skid. Features: Chemical Storage Container: Carbon Steel Q235B, Accessories are Customized, Size and Capacity are Customized, Door is Customized. Chemical Container: Made with Carbon Steel Q235B, Accessories are Customized, Size and Capacity are Customized, Door is Customized, Perfect for Storage. Chemical Containers for Sale: Carbon Steel Q235B, Accessories are Customized, Size and Capacity are Customized, Door is Customized, Available for Sale. Chemical Storage Containers: Made of Carbon Steel Q235B, Accessories are Customized, Size and Capacity are Customized, Door is Customized, Perfect for Storing Chemicals. Technical Parameters: Technical Parameter Description Capacity Customized Color Customized Accessories Customized Size Customized Door Customized Material Carbon Steel Q235B Applications: Chemical storage containers from ZOYET in China are ideal for storing hazardous materials, as they can be customized to meet the requirements of the materials you need to store. The capacity, accessories, size, and door of the containers can be customized according to your specific needs. They are made of durable materials like carbon steel Q235B, and can be designed to be airtight and waterproof. ZOYET's chemical storage containers can provide you with a secure and reliable solution for storing chemicals safely. Whether you need a storage container for a hazardous material or a neutral material, ZOYET's chemical storage containers will meet your needs. Customization: ZOYET Chemical Storage Containers Our chemical storage containers, made of carbon steel Q235B, are designed to store and protect the most hazardous and corrosive chemical products. The size, door, accessories and capacity of the container can be customized to fit your specific needs. Brand Name: ZOYET Place of Origin: China Size: Customized Door: Customized Material: Carbon Steel Q235B Accessories: Customized Capacity: Customized Support and Services: Chemical Storage Container Technical Support and Service We provide technical support and service for our Chemical Storage Container products. Our team is available to answer any questions you may have about product installation, operation, maintenance, and troubleshooting. We also offer repair and replacement services. If you need assistance, please contact us at [insert contact information here].

Product Description Building Curved Decorative Laminated Safety Glass for Window/Fence Basic Info. Layer Type Common Laminated Glass Function Decorative Intermediate Film PVB Melting Point High Temperature Production Dry Laminated Glass Color Clear Usage Furniture, Building, Window Delivery Time 15-20 Days HS 7005100000 PVB Color Blue, Green, Gray, Bronze and Milk White, PVB Thickness 0.38mm, 0.76mm, 1.14mm, 1.52mm etc Edge Work Flat Polished Quality Standard GB 15763.3-2009 Layers Multi Layers Upon Your Request PVB Brand Decent, Saflex, Sentryglas Application Architecture, Furniture Interlayers PVB/EVA/Sgp/PU/Sgx/Xir , Thickness 5.38mm6.38mm/6.76mm/8.38mm/8.76mm , /10.38mm/10.76mm/ Size According to The Client′ S Requirement Technique Laminated Payment T/T Certificate CE,ISO, SGS Transport Package Wooden Case Specification 1702 mm-2800 mm Trademark Rise Origin China HS Code 7007290000 Production Capacity 20000 Square Meter/Day Laminated glass: two or more glass layers fused together with an interlayer of polyvinyl butyral (PVB). It provides safety, security, and sound insulation. Commonly used in windows, doors, and automotive applications. 4mm 5mm 6mm Tempered Over Laminated Glass Curved Decorative Safety Glass For Window/Fence 04mm 5mm 6mm Tempered Over Laminated Glass Curved Decorative Safety Glass For Window/Fence 1 4mm 5mm 6mm Tempered Over Laminated Glass Curved Decorative Safety Glass For Window/Fence 2 Details: Thickness 6.38mm,8.38mm,10.38mm,12.38mm,16.38mm,6.76mm, 8.76mm,10.76mm,12.76mm,16.76mm,20.76mm,24.76mm , . Film type PVB-Film Thickness of PVB 0.38mm (.015"), 0.76mm (.030"), 1.14mm (.045"), 1.52mm (.060"), 2.28mm (.090") Interlayer according to your requirements Color High Transparent, milky, blue, dark grey, light green, bronze, etc. Size Customized Origin Qingdao,China Packing Strong wood cases Production Capacity 20000000 Delivery Time 10 days Usage Building Brand Rise

Product Description 20 inch fat tire mountain electric bike Customizable Fat Tire Hunting Electric Bikes 750Watt For Office Lady 0 Model: XQS-CC2040SK Frame size 20" Color: Black Blue White Army Green or as requests Net Weight: 27kg Frame: 6061 aluminum alloy full suspension folding frame Handelbar Sets: 6061 aluminum alloy Fork: Aluminum Alloy Hydraulic Suspension Fork Shifting Lever: Shimano TY21 Front Derailleur Shimano TZ500-7 Rear Derailleur: Shimano RD-TZ500, TZ, GS 7-SPEED Cranksets: Prowheel Aluminum crank square hole 52T Freewheel: Shimano TZ500 7speed 14-34t Chain: KMC 7s Brake: Hydraulic disc brake with power cut off feature Wheel spoked 20"x4.00 Tire: KENDA or Chaoyang 20*4.0 Electric configuration: Riding mode: PAS mode (5 Shifts) Range 150-170 KM Pure Human Riding Pure electric mode (5 Shifts) Range 80-90KM Maximum speed: ≤25km/h, ( can be set faster as customer required ) Front light LED Powered by battery load: 180kg Battery: 48V 14 Ah 18650 Lithium battery LG or Samsung Or Panasonic ( can be changed as customer required ) Charger: Over voltage,Over current Protection,etc. Motor: rear drive 48v 500-1000w brushless Bafang, waterproof rating IP54 ( can be changed to more powerful motor as customer required ) LCD Display OMT-S700 LCD Data display function, setting function: Waterproof rating: IP54 Power assist Sensor : KDS Left-load 12-point Holzer-intensive speed sensor Waterproof: IP54 Controller 5 Shifts intelligent control system Wire connector: All cables are Waterproof Integrated wires

Nijenhuis is from a hydraulic equipment company in the Netherlands and has been in the company for 8 years. 2 years ago, they sold a batch of hydraulic supports for coal mining. 3 months later, they were complained that the support was unable to rise. The technical team was surprised. The after sales personnel was shocked by the coal mining site condition, with long oil pipes, many sockets and poor dust prevention. There were pulverized coal, rock particles and iron filings at the bottom of hydraulic column cylinder and valve chamber. The after sales personnel saw the site and knew that the wear of the hydraulic cartridge pressure control valves had caused the leakage. The after sales personnel recommended that the customer improve the working environment and replace the hydraulic cartridge pressure control valves. This time, their engineer increased the filtration accuracy of the system, but the newly installed hydraulic cartridge pressure control valves went on strike again 5 months later. Their engineers blamed Nijenhuis for the poor wear resistance of the hydraulic cartridge pressure control valves purchased. Nijenhuis was helpless. The original manufacturer of the hydraulic cartridge pressure control valves said that most hydraulic valve manufacturers can only guarantee the service life of 3-6 months under such working conditions. Nijenhuis did not believe it and began to find new hydraulic valve manufacturers. A week later, more than 20 manufacturers of hydraulic cartridge pressure control valves were contacted online and offline, and the response was similar to that of the original manufacturer. Nijenhuis contacted me under the introduction of an old Dutch customer. When I saw the working video of the hydraulic support and the coal mining scene, I was not sure how long the life of the AAK hydraulic cartridge pressure control valves would be under that working condition. Nijenhuis seemed disappointed, thinking that AAK had no advantage over other hydraulic valve manufacturers. 3 days later, I told Nijenhuis that AAK could redesign this hydraulic cartridge pressure control valve and guarantee that it would be safe for more than 1 year. Nijenhuis probably thought I was fooling him, so he didn't reply to the email and I didn't follow up. 1 month later, Nijenhuis came to me again and asked about the probability of success. When he learned that AAK is 90% confident, it seemed that he saw hope again. After 50 days, AAK sent 30 samples of redesigned hydraulic cartridge pressure control valves. Last week, Nijenhuis sent an email saying that it has been 10 months since he used AAK hydraulic cartridge pressure control valves. The customer did not complain that the hydraulic support was unable to rise. Their engineers admired our little trick. For the design of hydraulic cartridge pressure control valve, AAK aims to solve the customer's pain points – working condition, while most hydraulic valve manufacturers only copy the standard parts. The working condition of the hydraulic support is special, and it is difficult to avoid coal dust, rock particles and iron filings. However, once these materials enter the hydraulic cartridge pressure control valve, any material can not resist wear for more than 1 year. Since the working environment cannot be improved, can it be isolated locally? AAK's little trick is that between the valve spool and the valve seat, there is a sealing pair as the support, and the contact surface of the sealing pair is consistent. Of course, the accuracy control here is the core, which most hydraulic valve manufacturers cannot achieve. The intervention of the sealing pair can not only isolate the pollution, but also reduce the friction between the valve spool and the valve seat, thus ensuring the service life of the hydraulic cartridge pressure control valves for more than 1 year. The service life of AAK hydraulic cartridge pressure control valve is 2-3 times that of its peers. You can also try one small order! https://www.aakindustry.com/info-det , ail/cartridge-pressure-control-valves- aak356

Krischnan, from Greece, has been engaged in the procurement of hydraulic valves for 6 years. At the beginning of the year, their hydraulic power unit used in military equipment needed to purchase hydraulic pressure control valves. Krischnan selected a supplier who has cooperated for 4 years to sample the hydraulic pressure control valve, which is required to be leak free and free of jamming. 1 month later, the accuracy of the hydraulic pressure control valves produced by the original manufacturer did not meet the equipment requirements, but this has already been the manufacturer's limit. Krischnan can only re select the manufacturer of the hydraulic pressure control valves and specially note with specific accuracy requirements that the cylindricity of the inner hole of the valve cage needs to below 2μm, the surface roughness is Ra0.15. He contacted more than 10 hydraulic valve manufacturers in 1 week, and only 2 manufacturers were willing to sample, but they still did not meet the equipment requirements. More than 2 months of time wasted, Krischnan became very anxious. Krischnan found AAK at Google and left a message asking whether there were hydraulic valves for military equipment. I was not sure about his purpose, so I gave an irrelevant answer that AAK had supplied hydraulic valves for aerospace 4 years ago. Krischnan sent the drawing of the hydraulic pressure control valve the next day, emphasizing that it was used for military equipment and reminding the machining accuracy and geometric accuracy. He seemed to be afraid of another failure, stressed and reminded again and again. 3 days later, I told him that we are 90% confident to be successful. If AAK also failed on this hydraulic pressure control valve, he would not need to go around in Ningbo again. The next day, Krischnan paid the development fee. After 45 days, AAK sent 30 samples of hydraulic pressure control valves. At the beginning of last month, Krischnan said in an email that although the time of AAK samples was longer than that of other hydraulic valve manufacturers, the AAK hydraulic pressure control valve was recognized by the engineer and the equipment commissioning was smooth. At the same time, he also sighed: after 3 rounds, only AAK was found to be able to produce the hydraulic pressure control valves that can be used in military industry. AAK focuses on 3 points to control the accuracy of the valve hole in the valve cage of the hydraulic pressure control valves: 1. The valve cage inner hole processing process was re optimized in 6 steps: drill the top hole with deep hole drill, vacuum quenching, rough honing, semi fine honing, artificial aging treatment, fine honing, and the process parameters were reset. Most manufacturers of hydraulic pressure control valves can only achieve 3 steps: vacuum quenching, rough honing and fine honing. 2. As for the details of honing, 0.04mm full honing allowance shall be reserved during rough honing of inner hole to lay a good foundation for subsequent fine honing and grasp the stress generated by honing. Here, skill is required, which is also a key step of accuracy. 3. More attention is paid to fine honing. An oilstone made of cubic boron nitride is used for fine honing. After fine honing, the cylindricity of the inner hole of the valve cage is below 1.5μm and the surface roughness is below Ra0.1μm. AAK hydraulic pressure control valve, 6-step optimization, 2 detailed points, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-pressure-control-valves- aak355

Our old Greek customer, Evander, emailed me in November last year that he sent me a sample of hydraulic cartridge relief valve, and stressing that it was not his, but one of his partners, Ptolemy, and also attached Ptolemy's contact information. After receiving the sample and communicating with Ptolemy, we learned that the hydraulic cartridge relief valve was produced by a local cartridge valve manufacturer in Greek and installed in their hydraulic cylinder, which was unstable. Their engineers said that the root cause was the high back pressure of the hydraulic system and the insensitive opening of the hydraulic cartridge valve. We can't determine the hidden dangers of the hydraulic cartridge valve just according to the original sample. I suggested Evander sending us the video of abnormal hydraulic cylinder, the drawing of hydraulic cartridge valve, and the schematic of the system. After discussing, AAK engineers advised that the problem can only be solved by reducing the opening back pressure resistance of the hydraulic cartridge valve. Perhaps because of Evander's endorsement, Ptolemy paid the development fee on the second day. I have always believed that for industrial products such as hydraulic cartridge valves, it is difficult to get the order without trust. With trust and reliable manufacturing quality, it is easy to get the order. After 40 days, AAK sent 20 samples of hydraulic cartridge valve. Yesterday, Ptolemy emailed me that AAK hydraulic cartridge relief valve was used on the hydraulic cylinder. The prototype operated stably and the hydraulic cartridge valve opened sensitively. AAK hydraulic cartridge valve is stable and sensitive under high back pressure. We optimized the structure of the original hydraulic cartridge relief valve from 3 aspects. 1. The valve sleeve of the hydraulic cartridge relief valve has an oil inlet cavity, and the outer circle of the valve sleeve is provided with a plurality of annular through holes as oil outlet, and oblique holes are set to control the oil outlet. 2. The middle part of the main valve spool is provided with a small hole connecting the oil inlet cavity and the inclined hole, and the main valve spool can slide in the valve body to form a spring cavity that is relatively closed to the oil inlet cavity, and the spring cavity is equipped with a pressure regulating spring. 3. The left end of the valve body is installed with an adjustable rod that can be rotated and retracted and has a lock nut. The pressure regulating spring on the adjusting rod is connected to the main valve spool. The outer diameter of the right end of the valve body is provided with a sealing groove to place the sealing ring group. Two sealing grooves are set on the left side of the external thread of the valve body, and the sealing ring group is placed to seal the connection with the socket to prevent oil leakage. The optimized AAK hydraulic cartridge relief valve equalizes the pressure difference on both sides of the valve spool through the small hole on the valve spool, reducing the back pressure resistance of the hydraulic cartridge relief valve opening. This makes it easy to open and enhances the sensitivity and stability of the hydraulic cartridge relief valve. AAK hydraulic cartridge relief valve, with high back pressure circuit, is also sensitive and stable, you can also try it! https://www.aakindustry.com/info-detail , /cartridge-relief-valves-aak504