AAK relief valve must be debugged for 3 times until without vibration and noise. Singapore customer placed an order immediately after comparison
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Update time : 2020-12-08 15:08:41
AAK relief valve inner hole grinding (internal grinding) has to be debugged for at least 3 times, and then mass production can be arranged only after seamless connection with valve spool, which can avoid vibration and suppress noise. We are proud to say that at present, nearly 90% of hydraulic valve manufacturers can not do so.
The relief valves from many hydraulic valve manufacturers has a same problem, after being used for some time, there will be varying degrees of vibration and noise. This is due to the neglect of the control of the accuracy of the inner hole, resulting in the roughness of the inner hole. Therefore, in the process of use, after being adjusted several times, the valve spool will be stuck, causing the pressure fluctuation of the relief valve, resulting in vibration and noise, which directly affects the normal use of the hydraulic relief valve.
Some time ago, a Singapore customer contacted us through the website, he has a batch of hydraulic relief valves complained by consumers due to quality problems. There is no problem in the test before delivery, but there is noise in the hands of consumers. Nearly 30% of the hydraulic relief valves in the same batch have this problem.
Since we didn't see the hydraulic relief valves, we couldn't analyze the specific reasons. We suggested that he send us several relief valve samples for detailed analysis. 7 days later, I received the relief valve samples from him. The surface gloss of these samples is very good. The internal parameter test shows that the accuracy deviation of the inner hole is very large (rough). After adjusting the flow rate for many times, it is easy for the valve spool to be stuck, which is the key reason for vibration and noise.
We emailed him the test result, together with our product parameters. After receiving it, the customer immediately called back for consultation. I told him that in order to save costs and pursue production efficiency, many hydraulic valve manufacturers ignored the control of inner hole precision in the production process. As long as consumers use it several times, the valve spool will be stuck, resulting in the main valve not opening up or the main valve closing without pressure relief, which will cause the pressure fluctuation of the relief valve and cause vibration and noise. At the same time, the customer compared our relief valve parameters and was very shocked, so he requested us to send some samples at their cost to them for comparison.
Half a month after sending the relief valve samples, we received an order from him. After the comparison test, the customer confirmed that there was no noise problem in the AAK relief valves, and the parameters were acceptable to them, so they decided to place an order with AAK.
In order to avoid the vibration and noise problems caused by the stuck valve spool, AAK has already controlled the precision during the punching and grinding of the inner hole in the early stage, and each batch of relief valves must be debugged for 3 times to ensure the seamless connection with the valve spool. After confirming that the processing accuracy is qualified, mass production can be arranged. In fact, only every process is not careless, a good relief valve can be made. The principle is simple, but often 90% of the hydraulic valve manufacturers do not take it seriously.
Vibration and noise? You will not have this problem if using AAK relief valve. It is also not expensive because it is easy to use - great quality without trouble.
Last week, the German customer Thorsten sent an order for 1,200 hydraulic counterbalance valves, and said that only AAK and SUN hydraulic counterbalance valves passed 1 million durability tests among the 6 hydraulic valve manufacturers making the samples.
At the end of last year, Stefan from Italy sent an email asking whether 50 non-standard hydraulic flow control valves could be produced within 25 days? For urgent orders like this, there is probably a problem with procurement.
Today, the American customer April has placed another new order for hydraulic cartridge valves. Coincidentally, this PO is for 100 non-standard customized hydraulic cartridge valves that AAK has cooperated with them for 10 years.
Romero from Spain has cooperated with AAK on a hydraulic pressure control valve for 3 years, and it is re-ordered 3 times a year. He has been very smooth on every purchase, but in October last year, he encountered problem on a batch of hydraulic relief valves purchased from other hydraulic valve manufacturer,
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