bellows relief valve DBDS10GM10/2.5 As a leader in the electromechanical equipment industry, YOYIK has a rich product line, covering hydroelectric generator sets, coal-fired generator sets and their accessories, as well as electrical and electronic product processing. Based on scientific management, the company has passed the ISO9001 quality system certification, adhered to authentic direct sales, and has become the preferred partner of many users with excellent quality and all-round services. The following are the series of components we can provide for power plants: #DF-bellows relief valve DBDS10GM10/2.5-DF Recirculating oil pump Driven screw HSNH210-54 overflow valve 2"LOF-98H Pump 100AYP60A OPC solenoid valve coil Z2804076-NC Accumulator NXQA-10/31.5-L-H pressure hose S110-AC-FC-0063 HP trip solenoid valve 4WEH16E50B/6EG24NETZ5L servo valve 0508.919T1401.AW011 solenoid coil 24vdc SV13-12V-O-0-00, HQ1615Z electric motor 170TYD-S20Lmin\F\IP54 flow valve FCV7 10 S O NVF Valve 4WE6L50/AG24W110V circulating pump 2PE26DG28P1-V-VS40 gear pump manufacturing 2CY-45/9-1A Over Speed Protection Control Valve OPC 0508.777T0301.AW027 Skeleton oil seal PG85*110*12 vertical centrifugal pump YCZ50-250 pump F3V20F4P13P-1C7H-22L Seal/O-ring TRd8.687.555 pressure relief valve YSF9-85/130-TA Solenoid Valve with Coil CCP 230D latching electromagnet ZYHY Steel pipe flange HG/T20613-2009 valve seat G131123 solenoid valve DG4V-3-2A-M-U-D6-60 Inflatable seal dome valve-DN80 P19081C-01 Mechanical seal BGM37G/60R-G9 filter regulator valve B73G-3AK-AD3-RMG oil pump types TCM589332 Double head solenoid valve 26YV pressure hose SMS-15/20-915mm-B bellows relief valve DBDS10GM10/2.5 bellows relief valve DBDS10GM10/2.5 MY-DFYL-2024-7-31
bellows Pressure relief valve 5.7A25 Since its establishment, YOYIK has always adhered to the principle of technology first and quality first. It has a team of senior engineers and technical workers in the industry. They integrate their rich experience in power station construction into product design and manufacturing to ensure efficiency and accuracy in every link. The company provides a full chain of services from equipment selection to after-sales maintenance, guided by customer needs, continuously optimizes solutions, and promotes the development of the energy industry. In order to support the operation of the power plant, we have prepared various parts inventory as follows: #DF-bellows Pressure relief valve 5.7A25-DF HP globe valve KHWJ10F1.6P DN10 PN16 Stainless steel globe valve J41W-25P BYPASS NRV SIZE 2" TC11 BEARING 2JJQ52 test hose M20*1.5/1000A.CSH. Manhole O-ring HB4-56J8-97 O RING 212�?5.3, VITON Stacked hydraulic control check valve Z2S6-1-60B Accumulator NXQAB-40/31.5-L-A EH oil specialized shock-absorbing pipe clamp �¦14/SP214PA-DP-AS The electromagnetic valve Z2805041 Spring pin kit f7x40 M3271 solenoid valve GS061200N Reducer M12250BGCC1D1.5A The electromagnetic valve ADK11-15A-D2H AC220V cushion for PUMP ALD320-20X2 Thrust disk tightening nut DG600-240-03-25 Gasket DN80 P2120A-55C P2120A-55C The electromagnetic valve 22FDA-F5T-W110-20/LV\G1/4 main sealing oil pump coupling DLXB820-R67 pressure hose S110-AC-AL-0320 Tapper Roller Bearing NJ 207 gear box automatic MO2225.OBMCC1D1.5A servo valve SH736001A0722B Accumulator spare parts kit NXQ-AB-16/20-L-Y Solenoid valve directional valve 4WE6Y50/AC220NE4VMFZ3-22YC DC220V 30W oil pump V20F-1S13S-1C11K Fixed cooling pump outlet regulating valve diaphragm KS125ZXN016BQ12SNOERH insertion plate 0508.919T0104.06AW DB24 Gear Reducer Assly XLD-4 O-RING RUBBER HB4-56J8-181 bellows Pressure relief valve 5.7A25 bellows Pressure relief valve 5.7A25 MY-DFYL-2024-7-31
2 " API safety relief valve 1) Safety valves are overpressure protection devices for protecting personnel and equipment, and usually installed in HP operation line for cementing/fracturing pumps, pressure vessels and other equipment under HP and high displacement. 2) The preset pressure value ranging 5000psi to 15000psi(35MPa to 105MPa) is adjusted through the top nut. When pumping pressure or operating pressure exceed the preset value, the safety valves will automatically open for pressure release. While the pressure is less than the preset value, they will be automatically closed. 3) The model of safety valve available: AQF02-105, AQF02-42,rated: 6000psi(42MPa)-15000psi(105MPa). Construction, connecting mode and size are same as SPM equivalent products; The butterfly spring inside can realize opening/closing of valves, therefore safety valves can protect people and equipment without shutting down relevant equipment. They are more reliable than shear type safety valves. Model Name Rated pressure Connection AQF02-105 2? safety valve 105MPa 2?FIG1502 tool joint pin X 2?LP AQF02-105 2? safety valve 105MPa 2?FIG1502 tool joint pin X 2? tool joint box AQF02-140 2? safety valve 140MPa 2?FIG2002 tool joint pin X 2? tool joint box
Features and Benefits Automatic control valve, running by itself. One complete combined disc, easy for maintenance. Diaphragm type; quick response against pressure change. Relieving pressure can be adjusted. Once Pipeline system pressure less than the discharge pressure, valve will be switch off quickly. Applicable Standards Flange standard: BS EN 1092-2 Face to face standard: EN558 Series10 Technical Data Nominal Diameter:DN50~DN400(2"~16") Nominal pressure: PN 16 Temperature range: -5C ~ +85C Sealing test: 1.1PN Shell test: 1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.
Hydraulic end assembly AH0501010500 AH35001-05.00 Sealing washer AH0501010203 AH35001-02.03 Hydraulic end assembly AH0801010500 AH34001-05.00 Sealing washer AH0801010203 AH34001-02.03 Hydraulic end assembly AH1001010500 AH33001-05.00 Sealing washer AH1001010203 AH33001-02.03 Exhaust filter assembly AH0501011400 AH35004-11.00 Inner ring AH0501010204 AH35001-02.04 Exhaust filter assembly AH1001011900 AH33014-04.00 Inner ring AH0801010204 AH34001-02.04A Cross head assembly AH0501010400 AH35001-04.00 Inner ring AH1001010204 AH33001-02.04 Cross head assembly AH0801010400 AH34001-04.00 Outer ring AH050101020500 AH35001-02.05.00 Cross head assembly AH1001010400 AH1001010400 Outer ring AH080101020500 AH34001-05.00 Pinion shaft assembly AH0501010300 AH35001-03.00 Outer ring AH100101020500 AH33001-02.05.00 Pinion shaft assembly AH0801010300 AH34001-03.00 connecting rod AH0501010206 AH35001-02.06 Pinion shaft assembly AH1001010300 AH33001-03.00 connecting rod AH0801010206 AH34001-02.06 Crankshaft assembly AH0501010200 AH35001-02.00 connecting rod AH1001010206 AH33001-02.06 Crankshaft assembly AH0801010200 AH34001-03.00 Cylinder assembly AH050101050100 AH35001-05.01A.00 Crankshaft assembly AH1001010200 AH33001-02.00 Cylinder assembly AH100101050100 AH33001-05.01A.00 Power end lubrication assembly AH0501010600 AH35001-06B.00 Cylinder head flange AH0501010502 AH35001-05.02 Power end lubrication assembly AH0801010600 AH34001-06C.00 Cylinder head flange AH1001010502 AH33001-05.02 Power end lubrication assembly AH1001010600 AH33001-06C.00 Cylinder head AH0501010503 AH35001-05.03A Spray pump assembly AH0501010800 AH35001-08B.00 Cylinder head AH1001010503 AH33001-05.03A Spray pump assembly AH0801010800 AH34001-08B.00 Cylinder liner sealing ring AH0501010504 AH35001-05.04 Spray pump assembly AH1001010800 AH33001-08C.00 Cylinder liner sealing ring AH1001010504 AH33001-05.04 Random tool AH0501011500 AH35001-20.00A Cylinder head plug AH050101050500 AH35001-05.05A Random tool AH0801011400 AH34001-15.00A Cylinder head plug AH100101050500 AH33001-05.05A Random tool AH1001012100 AH33001-31.00A Sealing washer AH10010109 AH33001-09
Our pressure relief safety valve is designed as a pop up type valve. On exceeding set pressure the valve opens to discharge the excess built up pressure. After relieving excess pressure, the valve automatically returns to the original position. The bronze internals (Seat & Plug) ensure that there is no leakage while in operation. By replacing only the spring it is possible to change set pressure range. Sizes Available : 15 NB, 20 NB, 25 NB, 40 NB, 50 NB End Connections : Screwed BSP IBR Certificate : Available For IBR Applications Soft-Seating : Also Available For Air Application Maximum Operating Temperature : 235° C Available Range : Min. Blow Off Pressure 0.35 Kg/Cm2 Max. Blow Off Pressure 17.5 Kg / Cm2
Hydraulic Rock Breaker - Manufacturer We are Manufacturer of JISUNG, ATLASCO & POWER Rock Breakers Suitable Excavator for L&T- Komatsu, TATA Hitachi, JCB, Hyundai, Volvo, Kobelco, XCMG, Sany.,, Excellent New Best Rock Breakers Available in Chennai, India
BKV BTV Model Pressure Relief Control Valve are hydraulically operated control valves and designed to maintain valve upstream pressure value constant and stable, regardless of flow rate variations. When line pressure is higher than the adjusted pre-set valve pressure level, inlet pressure is kept stable by opening fully the valve. In case of sudden pressure increase, it releases the higher pressure wave in a pressure sensitive manner and in this way, the water system works regularly. When there is no flow in the main valve, it closes by itself as fully tightness. The valves hydrodynamic body is designed for unobstructed flow path and provides excellent and highly effective modulation capacity for high differential
Hydraulic Pilot Operated Relief Valve equivalent to HydraForce RV10-28 passed testing, AAK received mass production order from customer in Turkey 4 months ago in May, we shipped a 2 pcs of test order for a pilot operated relief valve equivalent to HydraForce RV10-28 to a new customer in Turkey. It is a screw-in, cartridge style, pilot operated, relief valve with reverse free flow check valve, intended for use as a pressure limiting device in demanding hydraulic circuits which require fast response, low hysteresis, low leakage, low pressure override and reverse free flow features. This customer tried another hydraulic cartridge valve manufacturer in Ningbo China 1 year ago, but failed due to quality, then they placed the 2 pcs of trial order with AAK this May in despite of AAK price is 15% higher. Last Friday, we were advised by customer that AAK samples passed testing and have been performing very well, and received their mass production order for 500 pcs. The advantages of AAK Hydraulic Pilot Operated Relief Valve E-RV10-28 are: 1. The quality of this valve is benchmarking HydraForce, but price is much cheaper. 2. The service life is 2 times that of domestic hydraulic cartridge valve manufacturers in China Technical parameters of AAK E-RV10-28 Hydraulic Pilot Operated Relief Valve: Max. Operating Pressure: 240 bar (3500 psi) Capacity: 113 lpm (30 gpm) Max. Internal Leakage: 0.50 ml/min (10 drops/min) max. at to 80% of nominal setting Cavity: VC10-2 AAK E-RV10-28 Hydraulic Pilot Operated Relief Valve, benchmarking HydraForce RV10-28, its service life is 2 times that of its domestic peers. You are welcome to give it a try. AAK HYDRAULIC CARTRIDGE VALVES (816) 2024-09-30
For Hydraulic Pilot Operated Relief Valve equivalent to HydraForce RV10-28, the customer in Turkey got back to AAK after 1 year In January 2023, we received an inquiry from a customer in Turkey for a pilot operated relief valve equivalent to HydraForce RV10-28. It is a screw-in, cartridge style, pilot operated, relief valve with reverse free flow check valve, intended for use as a pressure limiting device in demanding hydraulic circuits which require fast response, low hysteresis, low leakage, low pressure override and reverse free flow features. In Ningbo China, there are very few hydraulic cartridge valve manufacturers who have this model. After quoting, we were advised that the price of AAK is 15% higher than another hydraulic cartridge valve manufacturer. Due to the fierce competition in the Turkey market, the customer placed the order with another manufacturer. Last week, the customer emailed us that the valves they purchased from another manufacturer did not perform very well, and theyd like to try AAK samples. The advantages of AAK Hydraulic Pilot Operated Relief Valve E-RV10-28 are: 1. The quality of this valve is benchmarking HydraForce, but price is much cheaper. 2. The service life is 2 times that of domestic hydraulic cartridge valve manufacturers in China Technical parameters of AAK E-RV10-28 Hydraulic Pilot Operated Relief Valve: Max. Operating Pressure: 240 bar (3500 psi) Capacity: 113 lpm (30 gpm) Max. Internal Leakage: 0.50 ml/min (10 drops/min) max. at to 80% of nominal setting Cavity: VC10-2 AAK E-RV10-28 Hydraulic Pilot Operated Relief Valve, benchmarking HydraForce RV10-28, its service life is 2 times that of its domestic peers. You are welcome to give it a try. AAK HYDRAULIC CARTRIDGE VALVES (797) 2024-05-20
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
AAK Optimized the Hydraulic Direct Acting Cartridge Relief Valve with 3 tricks, Gaylord gave up the original Indian manufacturer 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!
3 Advantages of AAK hydraulic cartridge relief valve, , a hydraulic customer from Bolivia, failed to purchase hydraulic cartridge relief valves from for the first time. has purchased hydraulic components from local hydraulic cartridge valve manufacturers in Bolivia for 3 years. He heard from his peers that the cost performance of purchasing from is better than that of Bolivian hydraulic valve manufacturers, so he began his overseas procurement trip. A hydraulic cartridge relief valve with rated pressure exceeding 30MPa, and the fit clearance between valve body and valve spool is required to be 0.006~0.01mm. successively tried samples with 3 hydraulic cartridge relief valve manufacturers in 70 days. The hydraulic cartridge relief valve samples had either internal and external leakage, blocked oil circuit, or even stuck. 3 times of proofing failed, which made helpless and even suspected that he was misled by his domestic peers. Richard noticed AAK on the B2B website and saw some tweets and customer cases to solve the problems of hydraulic cartridge valves, especially some big brands such as HydraForce and SUN Hydraulics, are also loyal customers of AAK for many years. He seemed to see hope and left a message to us: How much MPa can the rated pressure of the hydraulic cartridge relief valve with a clearance of 0.006~0.01mm between the valve body and the valve spool be? When I saw this message, I subconsciously felt that he had stumbled in the accuracy when purchasing this hydraulic cartridge relief valve, and he was inexperienced in choosing the hydraulic cartridge valve manufacturer. According to the problems of his hydraulic cartridge relief valve samples, AAK technical team determined that the problem was caused by burrs inside the hydraulic cartridge relief valve. However, the specific problem still depends on the sample analysis. I suggested Richard making samples directly to see the manufacturing quality of AAK hydraulic relief valves. Maybe that will change his view on China hydraulic cartridge valve manufacturers. After 30 days, AAK sent 10 samples of hydraulic cartridge relief valve. 6 months later, Richard emailed us that AAK hydraulic cartridge relief valves did not have the problems of "internal and external leakage, or blockage of the oil path or stagnation" that occurred in other hydraulic cartridge valve manufacturers, which also strengthened his confidence in purchasing from China hydraulic cartridge valve manufacturers. How to effectively avoid burrs of hydraulic cartridge relief valves? It is also a "thorn" that AAK has to remove since it was engaged in the R&D and manufacturing of hydraulic components. With 13 years of manufacturing experience, AAK can be sensitive to find problems and solve them. In the processing of hydraulic cartridge relief valves,
The original hydraulic valve manufacturer can not solve the problem of the hydraulic relief valves for 2 times, AAK reassured Bauer with 2 million performances Bauer has been working in K & G company in Brazil for 6 years. His boss always trusts his work. Bauer and AAK have cooperated for 2 years. Two years ago, the marketing of a hydraulic windlass developed by K & G company focused on the selling point of "no repair in 1 year". However, 10 months after sales, some users complained that the windlass could not rise when it was just started. The problem lies in the leakage of the hydraulic relief valves. Per the manufacturer, some hydraulic relief valves had deviation during assembly, he was willing to replace the hydraulic relief valves for free. But after a few months, the same problem continued. The boss was dissatisfied, and Bauer felt the pressure and checked with other manufacturers of hydraulic relief valves, but still no solution. Bauer began to worry. Bauer emailed me to ask why the hydraulic relief valve leaks? This is a system problem. I suggested that he send us the drawings of the hydraulic relief valve, the hydraulic principle of the hydraulic windlass, and the actual samples of the leaked hydraulic relief valve. Our engineer disassembled the original hydraulic relief valves and found that the contact surface between the poppet and the valve body was worn. The leakage was caused by the weak impact resistance of the valve spool. I told Bauer that because the working condition of this hydraulic windlass is a little special, it has high requirements for the hydraulic relief valve, especially for the impact resistance of the valve spool. The manufacturing quality of the original hydraulic valve manufacturer is not poor, and the deficiency lies in the valve spool, which can be improved. Bauer had no confidence in the original manufacturer and asked AAK to replenish 50 hydraulic relief valves. After 45 days, AAK sent out the hydraulic relief valves and promised "no repair in 1 year". Last week, Bauer informed AAK by e-mail that for those hydraulic windlasses installed with AAK hydraulic relief valves, the customers no longer complained about abnormal starting. Bauer admired AAK for not only finding the "cause" but also fitting the right medicine to the case. He was relaxed and the boss was satisfied. In fact, it is not how strong AAK is, but the inertia thinking of many hydraulic valve manufacturers. They seldom consider the difference of hydraulic working conditions when deciding which hydraulic components to fix. AAK insists that every hydraulic relief valve is a new subject, from material selection to production. AAK uses 3Cr3Mo3W2V hot working die steel for this hydraulic relief valve spool, its mechanical stress is unique among many steels. Its hardness, strength and wear resistance are more than twice that of conventional valve spool materials, and it also has good thermal fatigue stability and corrosion resistance.
Many hydraulic valve manufacturers can't make hydraulic relief valves with a fixed length diameter ratio of 11:1, AAK solved it with 3 points The processing difficulty of hydraulic relief valves with deep hole is a pain point in the industry. The greater the length diameter ratio, the greater the difficulty. Pablo, an American Hydraulic customer, has recently been besieged by an order for hydraulic relief valves with a length diameter ratio of 11:1. The original hydraulic relief valve manufacturer confirmed that the processing quality could be guaranteed during the quotation. However, in the actual proofing, it could not overcome the difficulty of deep hole. 3 proofs and 3 failures wasted 8 weeks. However, his customer had been pushing for the samples, and Pablo was in a dilemma. Pablo had to find new hydraulic relief valve manufacturers. Within 2 days, he contacted nearly 30 hydraulic cartridge valve manufacturers. All of them said that they can only produce hydraulic relief valves with a length diameter ratio of 5:1. Pablo realized that trouble was coming and was worried. Pablo learned that his friend Caleb purchased high-precision hydraulic cartridge valves from AAK, so he contacted us. According to the e-mail instructions and drawings of hydraulic relief valve sent by Pablo, the parameter requirements are high, that is, the tensile strength of hydraulic relief valve is 300N/cm�², the compressive strength is 540N/cm�², the clearance between the valve hole and the valve body is between 0.005 and 0.015mm, and the valve hole diameter is between �¦10~�¦41mm, the length of the valve body is 70mm, the maximum length diameter ratio is 11:1, and the dimensional accuracy of the valve hole is H6 ~ H7. When I saw the requirements of this hydraulic relief valve, I knew that most hydraulic valve manufacturers could not process it. Even if it is processed, its accuracy is a hidden danger. After internal discussion of AAK technical team, I replied to Pablo that AAK could send samples of hydraulic relief valves in 3 weeks, and the parameters could meet the requirements of the drawings. I felt Pablo's skepticism. Maybe the original hydraulic relief valve manufacturer also said like this but did not do it. He repeatedly emphasized the processing of the length diameter ratio and the accuracy requirements. After 20 days, AAK sent 6 samples of hydraulic relief valves. Pablo approved AAK hydraulic relief valve samples on the 5th day after receiving the samples. At the same time, he is curious that the original manufacturer failed in making samples of this hydraulic relief valve with the length diameter ratio of 11:1 for 3 times, but AAK succeeded at one time. The reason why AAK can produce the hydraulic relief valves with a large length diameter ratio mainly due to the following 3 points: 1. The long drill bit of W12Cr4V4Mo high-performance high-speed steel is selected to replace the conventional carbon tool steel drill bit.
For hydraulic relief valve with 3 high requirements, Ellenburger spent 6 months without results, and AAK succeeded in sample at 1 time I always remember an unusual inquiry email about hydraulic relief valve from Ellenburger, a Russian customer, at the beginning of this year. The email subject was "Don't reply if without ability and confidence", he should have been in trouble at other manufacturers. The content of the email was about testing 20 hydraulic relief valves, with detailed part processing drawings and parameter requirements attached. That was a hydraulic relief valve with high requirements, and the accuracy of valve hole is required to be within 2�¼M, the material hardness of the valve spool is HRC68, and the surface of the valve body is galvanized nickel alloy, which must withstand high pressure of 450bar. In addition, the durability test of the hydraulic relief valve must pass 2 million times. The requirements in terms of manufacturing quality, function and performance for this hydraulic relief valve is all clearly indicated. After more than 3 hours of discussion by AAK engineers, I replied to Ellenburger that AAK was able to produce this hydraulic relief valve at a development cost of 2,500 US dollars. After the email was sent, there was no reply, and I didn't follow up. Because I believe there are few manufacturers who can make this hydraulic relief valve. For example, in Ningbo, the "hometown of hydraulic valves in China", perhaps only 3 factories have this technical ability. 3 months later, Ellenburger suddenly asked our bank account number. He wanted to pay us to sample the hydraulic relief valve. I was also a little confused. After several rounds of communication, it was learned that the hydraulic relief valve had been developed for half a year, he found more than 20 manufacturers, communicated with more than 300 emails in total, and paid the development cost for 3 times, but all failed, and his mood was extremely bad. Ellenburger said that when he saw AAK reply that we can produce this hydraulic relief valve, his first feeling was that the manufacturer who responded so quickly should not be very good, so he ignored us. He thought that AAK would certainly follow up by email within a week, but to his surprise, AAK didn't send any email for a month, so he began to pay attention to AAK hydraulic valve slowly. In AAK website, he saw the stories between AAK and many customers, and some cases made him admire AAK very much, therefore, he believes that AAK is the ideal manufacturer of his samples this time. I was also moved by him and promised him that if AAK sample failed, I would be willing to return the development fee. At the same time, I also reminded him that if AAK could not get the hydraulic relief valve done successfully, there was no need to find other hydraulic relief valve manufacturers in Ningbo. After 45 days, 20 samples of hydraulic relief valves were sent after passing the internal test.
Jone is a hydraulic customer from the United States. His company has recently developed a hydraulic relief valve suitable for machines with high impact and high load. Because of the high requirements of working conditions, the steel used for the hydraulic relief valve has not been approved yet. They have been testing in the local hydraulic relief valve manufacturers in the United States for several weeks. Due to the high cost of proofing in the United States, they want to turn to Chinese hydraulic relief valve manufacturers for sampling and testing. Jone compared more than 10 hydraulic relief valve manufacturers and selected 3 to make samples. After receiving and testing the samples of hydraulic relief valves, none of them can meet the requirements of service conditions, and the test results are much worse than those of local manufacturers in the United States. Although these 3 hydraulic relief valve manufacturers changed the materials and improved the parameters, the toughness and plasticity of the steel still did not meet the working conditions, and Jone and his team were at a loss what to do. His friend Tom recommended him to contact AAK hydraulic valve for a try. Jone sent us an email with a try attitude. According to his hydraulic relief valve drawings and the working conditions with large impact force and high load, our engineers were not 100% sure, but were 90% sure, giving 2-3 weeks. Two weeks later, AAK successfully sent 6 hydraulic relief valve samples. On the 3rd day after Jone received the hydraulic relief valve samples, we received an email that the samples of hydraulic relief valve passed the performance test. AAK spent 2 weeks to try over 10 kinds of steels, and finally determined to replace 40Cr with 35CrMo steel. The high toughness and plasticity parameters of 35CrMo well match the working conditions of this hydraulic relief valve. At the same time, 35CrMo has high static strength, impact toughness and high fatigue limit, and the long-term working temperature can reach 500 . Jone was surprised that the samples of more than 10 hydraulic relief valve manufacturers in China were not successful. Even if the local manufacturers in the United States spent 4 weeks but still failed, how can AAK succeed in 2 weeks one time? The reason why AAK hydraulic relief valves can do what the domestic factories in the United States failed to do, because: 1. AAK has full-time material engineer who is specially responsible for material screening, comparison, testing and docking with the materials research institute. 2. Good materials also need good processing. The heat treatment method adopted by AAK for 35CrMo alloy steel is 845 annealing, 860 quenching (oil quenching) and 200 low-temperature tempering. After this special heat treatment, its hardness and wear resistance are increased by at least 50%.
Petrov is an old purchaser of Hydrosila Group in Russia. He cooperates with AAK on some non-standard hydraulic pilot operated relief valves and often discusses some difficulties and complications of hydraulic pilot operated relief valves. In the second half of last year, they needed to purchase a hydraulic pilot operated relief valve to test an agricultural machinery equipment. Due to urgent time, Petrov purchased from a Russian hydraulic relief valve manufacturer, who delivered 30 hydraulic pilot operated relief valves in 30 days. During the test run, the hydraulic pilot operated relief valves screamed at about 1.5MPa before opening, as well as at the start and stop. Petrov contacted the manufacturer of the hydraulic relief valves, and the manufacturer replied that the non-standard customization was completely based on the drawings provided, and the dimensional accuracy also met the requirements. Their engineers independently tested the hydraulic relief valves and found that there was really no abnormality. The boss was dissatisfied with the one week of delay due to the test run and asked Petrov to repurchase the hydraulic pilot operated relief valves. Because the hydraulic relief valve problems encountered before were solved by AAK, Petrov emailed me again. AAK engineer preliminarily judged that there may be problems in the design of the hydraulic pilot operated relief valve according to his fault description, the drawings of the pilot operated relief valve, the working parameters of the hydraulic system of agricultural machinery, and the video of the test machine. Knowing that he still has one month of flexibility, AAK can modify the original design of the hydraulic pilot operated relief valve and send 12 samples within 30 days. Four weeks later, AAK sent 20 samples of hydraulic pilot operated relief valves, which were installed and debugged without screaming, and the hydraulic power unit was started or closed for many times still without screaming. Petrov was surprised that AAK engineer found and solved the problem of hydraulic relief valveS at one time, while the original Russian hydraulic relief valve manufacturer can do nothing? Because the scream of pilot operated relief valve is often generated by high-pressure oil through damping hole or valve port, AAK engineer added inclined hole of valve seat and vibration elimination cavity in the original design. In this way, the dynamic and static characteristics of the hydraulic pilot operated relief valve can be improved, the screaming can be eliminated, the noise can be reduced, and the pressure control accuracy can be improved at the same time. AAK strong engineering team not only has the concept of German HAWE, but also has the experience of Italian Oil Controlï¼?the problem can be found at one time. After the successful test run, Petrov privately told us that the boss was very satisfied that he found a
Back from the three-day holiday, the director of the machine tool workshop sent a production report of TRV-08 hydraulic direct acting relief valve for an Indian customer early in the morning. The first paragraph is like this: "the programmers in our workshop made a low-level mistake and compiled the leakage of 2 drop / min in the hydraulic direct acting relief valve into a production process of 5 drop / min. I didn't check it out because I was anxious to go back to my hometown for the holiday". Seeing this production report of TRV-08 hydraulic direct acting relief valve, I was angry, not because the hydraulic relief valves produced has to be wasted, but because the workshop director indicated it as a low-level mistake in order to whitewash it. In every production link of hydraulic valves, error is error. There has never been any low-level error or high-level error. As long as you make a mistake, it's either bleeding or dying. I replied to him: 1. Re-produce TRV-08 hydraulic direct acting relief valve and work overtime continuously to make up for the the production progress delayed for 3 days. The produced parts of hydraulic relief valves shall be put into the waste warehouse and registered. 2. In the production of hydraulic valves, if you will make a mistake that no one has ever made, you can be promoted from workshop director to production director. The thought of predecessors is the ladder of future generations. To experience the pain of bleeding from mistakes, you can grow. No matter the production programming of hydraulic direct acting relief valves or other production links of hydraulic direct acting relief valves, we should not be careless. AAK hydraulic relief valves, it doesn't matter if there is a mistake. First recognize the mistake, then correct yourself, and then protect customers. You are welcome to try an order with AAK.
AAK introduced HARDINGE precision CNC lathe, and the machining surface accuracy of hydraulic relief valves was improved to 0.3m, which can not be reached by nearly 95% of hydraulic valve manufacturers in Ningbo. After comparing the parameters of different factories, a German customer found that only AAK meets their requirements for PO confirmation. Fred, a hydraulic valve purchaser from Brandenburg, Germany, is in urgent need of purchasing a hydraulic relief valve for a forklift recently. This hydraulic relief valve has a very high precision requirement. The machining surface roughness of a conventional valve is generally around 0.8m, but this one needs to reach 0.3m, the precision of which is nearly 3 times higher. Fred contacted all his hydraulic relief valve manufacturers, but none of them could achieve an accuracy of 0.3m. It is difficult for Fred to find a solution. Fred decided to try through B2B. He contacted nearly 10 hydraulic relief valve manufacturers online. Two said they could try it, but they are not sure for 100% success, because they had never made such a high-precision hydraulic relief valve. It seems that Fred has no good choice and asked them to try samples. Three weeks later, due to the insufficient accuracy and stability of the hydraulic relief valve, the customer did not approve the samples from these two manufacturers and asked Fred to re-proofing. Fred had to find other new manufacturers of hydraulic relief valves. Fred saw AAK hydraulic valve on B2B and left a message on our can you make the hydraulic relief valves with accuracy of 0.3m? I noticed that he browsed AAK website for about half an hour. He should have encountered problem on accuracy. We reply that it depends on the parameter index of the hydraulic relief valve and the working condition requirements. After receiving his drawing, our engineer confirmed that we can reach the accuracy of 0.3�¼m of this hydraulic relief valve and there may be no 3rd factory who can meet this requirement in Ningbo. If any doubt, we can make samples to test directly. Fred accepted AAK suggestion and paid a sample fee of $1,300.00. Two weeks later, AAK sent the samples of the hydraulic relief valve. After testing, Fred informed that AAK hydraulic relief valve was praised by the customer. Not only did the accuracy of the machined surface meet the standard, but the upper and lower deviation was also very small. While the samples of hydraulic relief valve from last two manufacturers are not stable, some with 0.3m, some with 0.4m, or even 0.6m. Only after comparison, the customer realized that AAK hydraulic relief valve is really high precision, so they have to admire it. The roughness accuracy of the machined surface within 0.3m is always the hard index of AAK. We have introduced the American HARDINGE precision CNC lathe, which gives us the most powerful support in terms of accuracy.
