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Ningbo 315100
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Date/Time:  10/7/23 10:58 GMT

AAK Hydraulic Relief Valves benchmarked HydraForce Quality

Caleb is from a hydraulic equipment company in Canada, and has cooperated with
AAK on several high requirements of hydraulic relief valves, but he is not
satisfied with the price of AAK. In May last year, Caleb’s company produced a
batch of four column hydraulic presses, which need to purchase HydraForce
standard hydraulic relief valves with performance requirements of not less than
2 million times. Caleb selected a hydraulic relief valve manufacturer in Ningbo
and purchased 600 pcs of same model as HydraForce. 2 months after the equipment
was sold, a customer complained that the piston rod of the four column oil
press vibrated abnormally. During after sales service, it was judged that the
hydraulic relief valve was faulty. After inspection, it was found that the
valve spool and valve seat had leakage traces. The original manufacturer of the
hydraulic relief valves reported that it was an isolated case, but 1 month
later, there were more similar complaints, even the system was not under
pressure, and the engineer found that the valve spool was stuck. The boss was
very angry and asked Caleb to purchase the hydraulic relief valves of the same
model and quality as HydraForce as soon as possible. Caleb contacted more than
10 suppliers of hydraulic relief valves and required that the quality should be
benchmarked with HydraForce. Most hydraulic valve manufacturers suggested that
Caleb should directly purchase HydraForce products, because it was difficult to
ensure that the hydraulic relief valve did not get stuck and had a service life
of 2 million times. Caleb was a little worried.

After wasting a week, Caleb contacted me and I told him that other hydraulic
valve manufacturers suggested purchasing HydraForce valves directly, which was
a good suggestion. Most manufacturers can't compare the manufacturing quality
of HydraForce for this hydraulic relief valve. AAK has more than 98%
confidence. If AAK hydraulic relief valves can not solve the abnormal vibration
of the piston rod of the four column hydraulic press or the system has no
pressure, then don't waste time on looking for manufacturers in Ningbo. After
45 days, AAK delivered 300 Hydraulic Relief Valves, and at the end of last
year, another 900 pcs were re-ordered. Last week, the PO for this hydraulic
relief valves came again. I joked that it seems that the sales volume of this
equipment is gratifying. The boss should be happy.

Caleb said that thanks to AAK hydraulic relief valves, the hidden danger of the
equipment was solved. If only the original model of HydraForce was used, the
boss would certainly look down on him. Now the boss has started to put him in a
good position, and he will be promoted to be purchasing manager next week.

The manufacturing quality of AAK hydraulic relief valve can be benchmarked with
HydraForce, it is determined by the following 3 points:

1. In terms of equipment, Swiss high-precision machine tools and various
independent fixtures upgraded and modified by AAK have eliminated human errors,
and the accuracy of components is consistent, thus it is far better than peers.

2. In terms of production control, more than 30 years of experienced
technicians are dedicated to handle the special machines. Sometimes, they can
even judge the production status by listening to the sound of the machine only.
Every production quality of the hydraulic relief valve is engraved in their

3. In terms of quality inspection, Mahr cylindricity meter imported from
Germany is used to check the quality. Through EasyForm software, the
measurement results can be obtained accurately and quickly. With the help of
the software, the workpiece can be quickly adjusted and aligned, so as to
improve the measurement efficiency and ensure that the 100% concentricity of
each hydraulic relief valve is consistent and completely free from jamming.

AAK hydraulic relief valves, high precision, no jamming, you can also try a
small order! , ail/hydraulic-relief-valves-aak328
AAK Hydraulic Relief Valves benchmarked HydraForce Quality
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SOURCE: Import-Export Bulletin Board (
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