AAK Hydraulic Cartridge Counterbalance Valve For Crane 0 Accident

Sulaiman comes from Brazil, and their hydraulic cylinder business is mainly
with the local engineering machinery manufacturers. In the second half of last
year, a batch of their hydraulic cylinders used on cranes almost caused an
accident. The root cause was the hydraulic cartridge counterbalance valve,
which was lack of function. During the construction of the crane, the hydraulic
oil pipe burst suddenly, and the crane dropped rapidly to the ground. During
on-site inspection, it was found that the oil cylinder operated normally, and
the hydraulic system also complied with the principle. The local manufacturer
of the hydraulic cartridge counterbalance valves reported that there was no
problem with the manufacturing quality. After 1 week, there was no progress in
the after-sales plan. The customer was not satisfied, the boss was unhappy, and
asked everyone to inquire through multiple channels.

Although this batch of hydraulic counterbalance valves was not purchased by
Sulaiman, he always felt that the reason for the abnormality of the equipment
was the hydraulic cartridge counterbalance valve. He tried to ask different
hydraulic cartridge valve manufacturers, but after a week, he could not get a
solution. Sulaiman intended to give up. When he was browsing Google, he
accidentally found AAK Hydraulic Valves. He left a message to me: I spent 36
minutes on your website and felt that AAK was able to solve the problems of
hydraulic cartridge valves. I need your help.

For customers who leave messages for the first time, there are few such
emotional expressions. After several rounds of communication, I learned about
their after-sales dilemma. According to pictures of the semi dissection of the
hydraulic cartridge counterbalance valve from the original manufacturer, the
drawings of the hydraulic cylinder, and the working parameters of the
equipment, my first feeling is that the control function of the hydraulic
cartridge counterbalance valve is not complete, so the hydraulic counterbalance
valve needs to be redesigned, and at the same time, the protection function of
the cylinder needs to be added. Sulaiman felt that AAK had come to the point.
He paid $800 development cost to AAK at his own expense and asked me to design
and customize 10 hydraulic counterbalance valve samples as soon as possible.

3 months after the samples of the hydraulic counterbalance valves were sent,
Sulaiman told us that after the AAK hydraulic counterbalance valve was used,
the crane was no longer abnormal and had a more sense of control than before.
The customer was very satisfied. I told him that the hydraulic counterbalance
valve designed by AAK has the function of load limit protection circuit. If the
pressure rises too fast in the case of reverse locking, it will automatically
open for overflow, and the operation of the hydraulic counterbalance valve is
not affected by the back pressure. When the pressure at the valve port
increases, it can also maintain a stable opening of the valve spool, which can
achieve the balance protection control of the hydraulic cylinder. Even if the
oil pipe bursts, it can protect the oil cylinder and prevent the crane from
dropping rapidly.

Last week, Sulaiman privately informed that he had been promoted to the manager
of Procurement Department 2, thanks to his after-sales plan this time. At the
same time, he is looking forward to conducting all-round cooperation with AAK.

AAK hydraulic counterbalance valve, has bright points in control, and 0
accident. You can also have a small try!

https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-counterbalance-
valves-aa , k392

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