Over the past year, Jerome has purchased more than 20 batches of different types of hydraulic valves of test orders from more than 10 hydraulic valve manufacturers in Ningbo, including AAK. Finally, he chose to place the large order of hydraulic flow control valves with AAK, because the packaging details of AAK made him think that the quality of AAK hydraulic flow control valves is the most reliable.
Jerome is from a hydraulic equipment company in Italy. He sent an email last week to purchase 2,500 hydraulic flow control valves. I was surprised because Jerome always purchased small orders before. After e-mail communication, it was learned that Jerome has purchased more than 20 batches of different types of hydraulic valve test orders from more than 10 hydraulic valve manufacturers in Ningbo in the past year. There are always some problems, such as time delay and communication delay, especially the packaging of the test order was criticized by his boss.
The quality defect of the hydraulic flow control valves purchased last time was complained to the boss by the company's installation engineer. During the assembly process, the installation engineer found that several hydraulic flow control valves could not be screwed into the socket at all, mainly due to obvious bumps at the threads of the hydraulic flow control valves. Jerome requires the original hydraulic flow control valves to be replaced. The manufacturer believes that each hydraulic flow control valve has been pressure tested before leaving the factory and shipped only after it is qualified. The bump was caused by the carelessness of their installers. The installer showed the boss of the damaged package photos to reveal the reason. Some of the packing boxes of the hydraulic flow control valves are deformed, some are broken, and even some of the inner packing poly bags are broken. Those hydraulic flow control valves with bumps were improperly packaged and protected during transportation. Jerome is helpless because of the factory's prevarication. Fortunately, this is just a trial order.
Jerome thought of the packaging details of each trial order of AAK. Only the packaging of AAK was different from that of other hydraulic valve manufacturers in Ningbo. At that time, it was only the trial order that he didn't pay attention to the packaging details of AAK. Now he saw the problems caused by improper packaging during transportation from other hydraulic valve manufacturers. He realized that only each trial order of AAK, the packaging received was intact.
Later, I told him that because the quantity of trial orders was small, most of them were delivered by express, and it is unavoidable that the parcels will be bumped. AAK will inspect each hydraulic flow control valve separately when leaving the factory. Only the qualified hydraulic flow control valves are put into the bubble bag and then into the corrugated box with the right size,
Just yesterday, I received a repeat order from Andy for a hydraulic flow control valve, which is just 3 months away from the delivery time of the last batch of hydraulic valves. The American customer Andy, started to communicate with us in 2019. Maybe it was just not the right time, we still didn't partner with each other till the beginning of this year. Because of encountering a Waterloo at the previous hydraulic valve manufacturer, he turned the tables at AAK and regained his confidence.
At the end of last year, Andy purchased a batch of hydraulic flow control valves from a hydraulic valve manufacturer. Because 20% of the shipments leaked, he encountered customer claims. The old hydraulic valve manufacturer was unwilling to bear the claim or re-produce. The customer kept pushing for replacement hurriedly. The owner asked him to find a high-quality hydraulic valve manufacturer to reproduce the goods for the customer.
Andy had a big headache at that time. The replacement quantity is not big, the hydraulic valve manufacturers with exquisite quality were unwilling to produce the small quantity for him. The hydraulic valve manufacturers who were willing to produce this quantity, were not able to meet the customerâ??s requirement about the roughness of hydraulic flow control valve. He ran into a wall everywhere, which made Andy haggard.
When Andy contacted with AAK HYDRAULIC VALVE, we are willing to cooperate with her to solve this difficult problem. We tested the leaked hydraulic flow control valve sample. The reason for the leakage is the roughness of the mounting surface of the hydraulic flow control valve. According to the customer's service conditions, this roughness must be controlled at 1.0 �¼ M or less. Andy is very confused why 80% of the installation surface roughness of hydraulic flow control valve is up to standard, while 20% is out of this range. The root of this fluctuation is the master's operation method, resulting in human error. The surface roughness is the depth, density, texture of the traces left on the machined surface from the action between the tool and the part surface, which depends on the master's processing technique.
Andy is very clear that at present, most domestic hydraulic valve manufacturers generally control the roughness of the installation surface of hydraulic flow control valve at 0.8-1.0 �¼ m. The biggest problem is not stable enough. Andy also knows that only AAK controls the roughness value of hydraulic flow control valve within 0.8 �¼ M, which can completely avoid leakage outside the hydraulic flow control valve, because of rest assured, Andy decided to repeat the order with AAK HYDRAULIC VALVE.
Just yesterday, I received a repeat order from Andy for a hydraulic flow control valve, which is just 3 months away from the delivery time of the last batch of hydraulic valves. The American customer Andy, started to communicate with us in 2019. Maybe it was just not the right time, we still didn't partner with each other till the beginning of this year. Because of encountering a Waterloo at the previous hydraulic valve manufacturer, he turned the tables at AAK and regained his confidence.
At the end of last year, Andy purchased a batch of hydraulic flow control valves from a hydraulic valve manufacturer. Because 20% of the shipments leaked, he encountered customer claims. The old hydraulic valve manufacturer was unwilling to bear the claim or re-produce. The customer kept pushing for replacement hurriedly. The owner asked him to find a high-quality hydraulic valve manufacturer to reproduce the goods for the customer.
Andy had a big headache at that time. The replacement quantity is not big, the hydraulic valve manufacturers with exquisite quality were unwilling to produce the small quantity for him. The hydraulic valve manufacturers who were willing to produce this quantity, were not able to meet the customer's requirement about the roughness of the hydraulic flow control valve. He ran into a wall everywhere, which made Andy haggard.
When Andy contacted with AAK HYDRAULIC VALVE, we are willing to cooperate with her to solve this difficult problem. We tested the leaked hydraulic flow control valve sample. The reason for the leakage is the roughness of the mounting surface of the hydraulic flow control valve. According to the customer's service conditions, this roughness must be controlled at 1.0 M or less. Andy is very confused why 80% of the installation surface roughness of hydraulic flow control valve is up to standard, while 20% is out of this range. The root of this fluctuation is the master's operation method, resulting in human error. The surface roughness is the depth, density, texture of the traces left on the machined surface from the action between the tool and the part surface, which depends on the master's processing technique.
Andy is very clear that at present, most domestic hydraulic valve manufacturers generally control the roughness of the installation surface of hydraulic flow control valve at 0.8-1.0 m. The biggest problem is not stable enough. Andy also knows that only AAK controls the roughness value of hydraulic flow control valve within 0.8 M, which can completely avoid leakage outside the hydraulic flow control valve, because of rest assured, Andy decided to repeat the order with AAK HYDRAULIC VALVE.
To lose a large amount of money in the Hydraulic Flow Control Valve, AAK used a small amount of money to ease the worries of Brazilian customer
Bernardo comes from a hydraulic winch manufacturer in Brazil, and has cooperated with AAK several times on non-standard customized hydraulic cartridge valves. At the beginning of last year, Bernard company needed to purchase hydraulic flow control valves for a batch of hydraulic winches. Due to cost pressure, the boss asked Bernard to reduce the procurement cost of hydraulic flow control valves by 10%. This hydraulic flow control valve needs to be the same as HydraForce standard part. After a round of sourcing, Bernard determined the manufacturer of the hydraulic flow control valve. 7 months after the sale of the hydraulic winch, a customer complained that the sealing ring of the hydraulic flow control valve was broken, resulting in leakage, which caused the hydraulic winch to rise powerlessly. 6 months after the original manufacturer replaced the sealing ring with new one, the old problem happened again. The customer complained directly to the boss, who asked Bernard to replace all the hydraulic flow control valves within 1 month and asked the original manufacturer to bear the costs. However, the original manufacturer could not reach an agreement. Bernard was caught in the middle. He was embarrassed for 2 weeks and made no progress. The boss was very disappointed with him.
Bernard sent me an email asking about the time and cost of re producing the hydraulic flow control valves. He wanted to pay for it himself. According to the hydraulic flow control valve drawings he sent, I realized that maybe only replacing with durable O-ring could solve his embarrassment. I sent him 10 O-rings for matching tests. A week later, Bernard told me that AAK O-rings could be matched with the original manufacturer's hydraulic flow control valves. He asked me to send 500 O-rings to Brazil as soon as possible, and he could finally have a good sleep.
Last week, Bernard sent an e-mail to express his thanks. All these hydraulic flow control valves have been assembled with AAK O-rings. It has been more than a year, and there has been no complaint of leakage caused by the rupture of the sealing ring of the hydraulic flow control valves. The boss also praised him for solving big losses with small money.
AAK's O-ring has 3 strengths: no sloughing, no extrusion and wear resistance. The material and structure of the seal ring directly affect the performance of the seal ring. The hardness, extrusion resistance, tensile strength and deformation of the material all determine the service life of the seal ring, and the structure of the seal ring also determines the sealing effect. AAK selects Japan's special PU polyurethane rubber sealing ring, and the lip compression of the sealing ring is strictly controlled between 15% ~ 20%.
The Proportional Flow Control Cartridge Valve equivalent to Bucher SRCB has stable performance, and has been exported to Europe and America since 2022
Today, we d like to introduce a Hydraulic Proportional Flow Control Cartridge Valve equivalent to Bucher SRCB.
In the SRCB series of proportionally operated flow control valves, the optimized design of the pressure compensator ensures constant speeds at the hydraulic actuator. The valves can be used as 2-way or 3-way units. As the 3-way version, they divide the inlet flow into a constant-flow / priority-flow portion and a surplus-flow portion. The surplus flow can be pressurized.
The valve is mainly used in snow removal equipment, and is highly favored by Russian customers. One of our Russian customers purchases it regularly every month. They have also been shipped to customers in Turkey, Sweden, Canada and USA.
AAK hydraulic proportional flow control cartridge valve 2 advantages:
1. The quality of this valve is benchmarking Bucher, 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-SRCB Hydraulic Proportional Flow Control Cartridge Calve:
Operating Pressure: max. 315 bar
Min.Pressure Difference (Pressure Compensator): 7
Fluid Temperature Range: - 20 ~ + 80
Inlet Flow: max.100 l/min.
Leakage: max. 100 cm ³/min. at 100 bar
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus)
Cavity: CSRCB3
AAK E-SRCB hydraulic proportional flow control cartridge valve, benchmarking Bucher SRCB, our European and US customers have been purchasing it since 2022. You are welcome to try it out.
AAK Hydraulic Flow Control Valve with 3 major advantages, recognized by Yagmur
Yagmur is from T�¼rkiye and mainly purchases hydraulic cartridge valve standard parts from Ningbo. Recently, they developed a hydraulic drilling equipment that uses hydraulic flow control valves that are modeled after HydraForce standard parts, and purchased from a hydraulic valve manufacturer in Ningbo. During equipment debugging, it was found that the flow rate of the hydraulic flow control valve was unstable, and the leakage rate did not match the hydraulic system. The original hydraulic flow control valve manufacturer stated that this is a replica of HydraForce and is unwilling to optimize its function for several hydraulic flow control valve samples. Yagmur checked with several other hydraulic valve manufacturers, but they were not interested. Yamour was very anxious.
The original hydraulic flow control valve manufacturer introduced AAK to Yagmur. After communication, it was learned that her requirements for this model include low leakage and high precision requirements for valve holes. Based on the hydraulic system schematic provided by her and the industry model code of the HydraForce hydraulic flow control valve, I recommended a ready-made sample to her. As long as the external dimensions meet his manifold requirements, it can solve the problem she is currently facing.
2 weeks after the sample was sent out, Yagmur informed via email that the drilling equipment was successfully debugged. The low leakage of AAK hydraulic flow control valve meets their system requirements, especially the flow control function that they are very satisfied with. I told her that for this AAK hydraulic flow control valve, we have 3 major advantages:
1. The internal leakage of AAK hydraulic flow control valve is 5 drops/min, while most peers can only achieve 8-10 drops/min.
2. The hole accuracy of AAK hydraulic flow control valve can reach IT6-IT7 level, and the surface roughness can reach Ra0.2-0.025m.
3. The AAK hydraulic flow control valve function fully aligns with the standard parts of HydraForce, and there are probably no more than 3 manufacturers in Ningbo to meet it.
The vast majority of hydraulic flow control valve manufacturers in the industry do not use forming cutters for machining small quantities of hydraulic flow control valves, but use CNC instead to process according to dimensional requirements. The result of this machining is an accuracy of 0.03mm and a positional tolerance of 0.02mm. The AAK hydraulic flow control valve is processed with forming tools, and the dimensional accuracy of the valve hole after processing reaches 0.01mm, with a positional tolerance within 0.007mm. At the same time, AAK has its own standards for tool selection, with hardness of HRA90 alloy material, heat resistance of 900 , valve hole accuracy of IT6-IT7 level, surface roughness of Ra0.2-0.02m, and tool life is 30 times higher than ordinary alloy steel.
For hydraulic cartridge flow control valve with 2m accuracy, hydraulic cartridge valve manufacturer AAK has 3 details to meet it
Last week, Akjoor from T�¼rkiye left a message on the website of the hydraulic cartridge valve manufacturer AAK: I need the lead time of producing a standard hydraulic cartridge flow control valve, but the precision of the valve cage must be controlled within 2m. After communication, we learned that Akjoor purchased 360 pcs of hydraulic cartridge flow control valves from another hydraulic cartridge valve manufacturer. Except for the unstable valve cage accuracy, all other functions meet the requirements of their engineers.
This hydraulic cartridge flow control valve is actually not difficult, with a valve cage accuracy of within 2m is an additional requirement of Akjoor. Most hydraulic cartridge valve manufacturers are only able to copy standard parts. If there are additional requirements, stability can be a problem.
I sent Akjoor a video of hydraulic cartridge valve manufacturer AAK produced hydraulic cartridge flow control valve cages last time, showing how AAK controlled the accuracy of the valve cages in 3 steps. The machining of AAK hydraulic threaded cartridge valve cage is carried out using Jidou fully automatic lathe, which is suitable for machining parts with precision requirements. After one clamping, the machining of the valve cage is completed in one go.
1. After the valve cage clamp is completed, check the positioning to ensure that the clamp is fixed without deviation, then close the safety door and start processing.
2. After the valve cage is processed, the technician takes out the valve cage and uses an air gun to remove debris from the valve cage and fixture.
3. Use a plug gauge to check the machining size of the valve cage.
Today, we received the test order from Akjoor, but need to start production after CNY, because our workshop has already been closed due to CNY holiday.
AAK hydraulic cartridge flow control valve, 3 details, no problem to meet 2m accuracy.
For Hydraulic Electro-Proportional Priority Flow Control Valve Cartridge equivalent to HydraForce PV72-30, received re-order from client
This Monday, we launched an Electro-Proportional Priority Flow Regulator Valve Cartridge equivalent to HydraForce standard part PV72-30.
It is a solenoid operated, pressure compensated, spool type, normally closed, proportional priority flow control valve.
The features of this proportional priority flow control valve:
Excellent linearity and hysteresis characteristics.
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 placed a test order for 10 pcs last June in 2022. After 1 year of testing, it proves that the function and performance of hydraulic proportional priority flow control valve benchmarked the quality of HydraForce PV72-30. Today, we received their re-peat order for 1,000 pcs qty.
hydraulic solenoid operated proportional priority flow control valve 2 advantages:
1. Internal leakage: 0.38 lpm Max. at 207 bar (3000 psi), 0 current, benchmarking HydraForce
2. Its service life is 2 times that of its peers
Technical parameters of E-PV72-30 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: See PRESSURE DROP VS. FLOW graph
Internal Leakage: 0.38 lpm (0.1 gpm) Note: Max. at 207 bar (3000 psi), 0 current
Cavity: 12-3
The newly launched E-PV72-30 hydraulic solenoid operated proportional priority flow control valve, benchmarking HydraForce PV72-30, has been approved by customer in after 1 year of testing. You are welcome to try it out.
