The valve spool is stuck, AAK hydraulic directional control valve solved it

Over the past 2 years, Peter, who is from ST hydraulic equipment manufacturing
company, has been very smooth in purchasing hydraulic valves in Ningbo. He and
I often have some communication via emails, but there is no cooperation yet due
to the high price. A batch of hydraulic directional control valves he purchased
last year had problems. Six months after shipment, the customer found that the
hydraulic system could not operate because the valve spool of the hydraulic
directional control valve was stuck, and asked ST company to solve it within 30
days. Peter communicated with the original manufacturer of this hydraulic
directional control valve but no gain. The manufacturer thought that the
hydraulic oil was not clean or there were problems in installation, because
their hydraulic directional control valves passed the test before shipping.

The boss asked Peter to check with other manufacturers and be sure to solve
customer complaints within 30 days. Most manufacturers advised that they have
no existing stocks that are exactly same as this hydraulic directional control
valve, and they are also not willing to produce it especially for such a small
quantity. Some manufacturer advised that they can customize it for Peter, but
it will take more than 50 days and also costs a lot. Two weeks passed but still
no solution, which makes Peter haggard.

Peter thought of AAK and emailed us to ask if there was a hydraulic directional
control valve of the same model, and the faster the delivery, the better. After
reading this email, I understood that there was a problem with the hydraulic
directional control valves purchased by Peter. After further communication, I
learned that the valve spool of the hydraulic directional control valve he
purchased this time was easy to be stuck and complained by customer. According
to Peter's drawings and working condition requirements, AAK engineers conducted
comparative analysis, and later found that the control principle and size of
this hydraulic directional control valve are consistent with one of AAK's
existing stock, except that the design method is different.

I immediately answered Peter that AAK had 100 hydraulic directional control
valves in stock. At the same time, I emailed the drawings of AAK hydraulic
directional control valves and asked Peter and his engineers to verify whether
AAK hydraulic directional control valves met their requirements. The next day,
Peter said that their engineers thought AAK hydraulic directional control valve
could not be used because some designs were fundamentally inconsistent. I
suggested to him: if you want to solve the customer complaint within 30 days,
perhaps purchasing this hydraulic directional control valve is the best choice.
To believe in the analytical ability of AAK, you should try our hydraulic
directional control valves first. If it really cannot be used, AAK shall bear
all expenses for goods return. Peter has no choice and asked AAK to send 24
hydraulic directional control valves.

A week later, Peter said that the hydraulic directional control valves sent by
AAK was not only easy to install, but also fully met the working requirements
of their company's hydraulic equipment. Their engineers said twice in a row:
incredible, incredible. His customer is very satisfied with this quick after-
sales. Peter spent 2 weeks looking for the hydraulic directional control
valves, but no gain. Why did AAK finish it 1 week after analysis? That's
because:

AAK hydraulic directional control valve has two absolute advantages and has
already surpassed its domestic counterparts:

1. AAK has a high-precision CNC machining center imported from Switzerland and
various independent fixtures upgraded and refitted by itself, which eliminates
human errors and avoids valve spool stuck and other faults.
2. The independent professional R & D team, combined with unique R & D
technology, has realized the personalized customization demand of hydraulic
directional control valve, which can not be achieved by 95% of domestic peers
in China.

Peter told me privately that his boss asked him to send samples of their other
hydraulic directional control valves previously purchased elsewhere to AAK for
quotation. Even if the price is a little expensive, they should still choose
more stable hydraulic valves from AAK. They not only admire AAK professional
analysis ability, but also AAK ability to solve difficulties for customers in
time.

AAK hydraulic directional control valve is professional and attentive. It can
solve problems for you in time. You can also have a small try.

https://www.aakindustry.com/info-detai , l/hydraulic-directional-control-valves-
aak176

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