AAK Hydraulic Cartridge Relief Valve Worry Free in 18 months

Devante is from a hydraulic equipment company in Spain. He has been purchasing
for 8 years and cooperating with AAK for 3 years. In June last year, a batch of
hydraulic cylinders of their company were complained of telescoping jitter.
During after- sales service, it was judged that the hydraulic cartridge relief
valve of the hydraulic system was abnormal. After disassembly, it was found
that the spring elasticity in the valve body was out of function. The
manufacturer of the hydraulic cartridge relief valve thought that the high
working frequency of oil cylinder caused spring failure. It could be replaced
for free for good cooperation, but the complaints were increasing later. The
boss was not satisfied with the hydraulic cartridge relief valves purchased by
Devante this time, and Devante had a great pressure.

At the beginning of last year, their engineer required the manufacturing
quality of the hydraulic cartridge relief valve for the hydraulic cylinder they
developed, to benchmark HydraForce. Devante believed that the function of this
hydraulic cartridge relief valve is relatively conventional, so he chose a
hydraulic cartridge relief valve manufacturer with competitive price.
Unexpectedly, the service life would be exhausted in less than 6 months.
Devante regreted choosing the wrong hydraulic cartridge valve manufacturer. He
redefined the quality of this hydraulic cartridge relief valve: no repair
within 1 year, and the service life of the built-in spring shall not be less
than 18 months. In 1 week, only 2 hydraulic relief valve manufacturers accepted
to try the samples, and AAK was one of them. 1 month later, the samples of
hydraulic cartridge relief valves from 2 manufacturers were installed on
different hydraulic cylinders, to PK directly.

Last week, Devante emailed that the hydraulic cartridge relief valves of the
cylinders had been replaced. In 1 year, there was no customer complaint about
the hydraulic cylinder installed with AAK hydraulic cartridge relief valves,
while the other one was just stuck in 1 year. Their engineer tested the built-
in spring of AAK. After 1 year of high frequency work, its fatigue resistance
was still like a new material. I replied that the difficulty of this hydraulic
cartridge relief valve is just the fatigue resistance of the spring. As long as
this is solved, you will have no worries about using it for 18 months.

For the spring of this hydraulic cartridge relief valve, AAK uses German UP6
spring steel, which is optimized according to 60Si2Mn alloy steel. Its strength
and elasticity can be fully suitable in military equipment. The fatigue
resistance of the spring is more than 3 times that of other carbon steel
springs, which is the core reason why the other manufacturer’s has been out of
use in 1 year, while AAK's is worry free in 18 months. Although the cost of
this spring is more than 2 times higher than that of other materials, even if
the cost of the material is 3 to 5 times higher, the best one should be chosen.
Things that are not good enough cannot be used by AAK, let alone given to
users.

AAK hydraulic cartridge relief valve, worry free in 18 months, welcome you to
try a small order!

https://www.aakindustry.com/info-det , ail/hydraulic-cartridge-relief-valves-
aak393

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