AAK hydraulic directional control valve with internal leakage of 2drops/min

Oliver comes from a hydraulic equipment company in Canada. At the end of last
year, they planned to develop a hydraulic cylinder that uses a hydraulic
directional control valve. The parameter requirements are high, especially the
internal leakage should be less than 2drops/min. Oliver inquired about more
than 10 manufacturers of hydraulic directional control valves. Only one
supplier who had cooperated for 5 years told him that he was 90% sure. Other
manufacturers surrendered. One month later, the hydraulic directional control
valve was installed with the oil cylinder. Less than 12 hours after startup,
the hydraulic oil cylinder was unstable during reciprocating motion. After
disassembly, the engineer found that the hydraulic directional control valve
had internal leakage exceeding the requirement of 2 drops/min. Oliver was very
helpless. He continued to look for new manufacturers of hydraulic directional
control valves, and they all basically replied that they could not meet the
requirement of internal leakage.

Oliver found an article on Google, "The internal leakage index is equaled to
the local manufacturer in Germany, but AAK hydraulic threaded cartridge valve
has better cost performance”, and left a message on our website: can you
customize the hydraulic directional control valve with internal leakage of
2drops/min? At first glance, I knew that this was an accurate customer
consultation. Although the internal leakage of 2drops/min was difficult, AAK
had mass production 1 year ago. We suggested him send us the drawings and
working condition requirements of the hydraulic directional control valve, and
AAK can make samples directly. If the internal leakage of the hydraulic
directional control valve does not meet the standard, 100% of the development
cost will be returned.

According to the development data provided by Oliver, there may not be any
other manufacturer that can provide guarantee except AAK. After 30 days, AAK
successfully sent 8 hydraulic directional control valve samples. Three months
later, Oliver informed that no abnormality of the hydraulic directional control
valve was found during the 3 internal commissioning of his company. After the
hydraulic cylinder was tried out by the user, the feedback was also very good.
Oliver is curious about the hydraulic directional control valves surrendered by
so many manufacturers. Why did AAK samples succeed at one time?

AAK hydraulic directional control valve has 3 absolute advantages and has
already surpassed its domestic counterparts:

1. The precision honing machine imported from the United States is used to
finish the valve hole and valve spool of the hydraulic direction control valves
for more than 3 times. The dimensional accuracy of the valve hole is IT7 ~ 4,
and the surface roughness can reach Ra 0.32 ~ 0.04μm, thus meeting the
requirements of high accuracy.

2. AAK engineer team, select the raw materials and spare parts based on the
requirements of working conditions, and never follow the ordinary market.
Especially in the customization of high requirement hydraulic directional
control valves, they have rich experiences and cases.

3. AAK has been OEM factory of hydraulic valves for 3 of the world's top 500
companies for 10 years. The quality control process is more strictly self-
executed than the ISO certification system. It sticks to manufacturing details,
focuses on process innovation, and focuses on technology research and
development. Ensure that each hydraulic directional control valve has anti
fatigue, high precision and long service life.

AAK hydraulic directional control valve, 2drops/min internal leakage, you can
also have a small try!

https://www.aakindustry.com/info-detai , l/hydraulic-directional-control-valves-
aak258

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