AAK Hydraulic Cartridge Directional Control Valve High Stability

Primo is from a hydraulic equipment company in Brazil. He has been smooth in
this industry for 5 years, but encountered trouble in a hydraulic cartridge
directional control valve. At the beginning of this year, their company sold a
batch of hydraulic supports. After 6 months, the customer reported that the
pipeline interface was suddenly broken. The after-sales server thought it would
be OK to replace the pipes, but a week later, an accident was almost caused and
the customer was angry. The original source is the hydraulic cartridge
directional control valve. When the control valve is opened in reverse
direction, the system oil overflows rapidly with a large amount, and the impact
pressure causes the fracture of the pipeline interface. The manufacturer of the
hydraulic cartridge directional control valves fed back that the high pressure
and large flow under operating conditions caused abnormal control, which had
nothing to do with the manufacturing quality of the valves, the only solution
is to replace with new ones. Primo had no choice but to change the manufacturer
of the hydraulic cartridge directional control valves. A week has passed but
the after-sales plan has not been implemented yet. The boss was unhappy and
Primo was worried.

Primo found AAK on Google. After browsing AAK website, he left a message: How
to ensure the stability of the hydraulic cartridge directional control valves
with high pressure resistance and large flow? After communication, I learned
that the original hydraulic cartridge valve manufacturer had no solution. I
told him that AAK hydraulic cartridge directional control valve should first
ensure its reliability, not replace the pipeline interface today, but replace
the seal ring tomorrow, and then ensure its stability, it cannot be the case
that sometimes it is abnormal, sometimes it is normal. Perhaps Primo felt that
AAK was different from the other China hydraulic cartridge valve manufacturers
he contacted, and asked if we could make samples according to the hydraulic
cartridge directional control valve drawing and system schematic diagram
provided by him. AAK engineer thought that the design of the hydraulic
cartridge directional control valve should be optimized first. Primo’s
engineer said that AAK can play its own role as long as the appearance and size
remain unchanged and the functions are satisfied. After 50 days, AAK sent 12
samples of hydraulic cartridge directional control valves.

2 weeks later, Primo emailed that the hydraulic support could operate normally
after installing AAK hydraulic cartridge directional control valves. Next, he
just needed to wait for his customer to assess the stability of the hydraulic
supports. I told him that he does not need to worry about the stability of AAK
hydraulic cartridge directional control valves, even under high pressure and
large flow, there would be no problem in 1 year. Last week, Primo sent the
order for 360 hydraulic cartridge directional control valves, reminding me that
this was the request of his boss. In order to avoid accidents, the boss decided
to replace all the hydraulic supports with AAK Hydraulic cartridge directional
control valves, because the customer was very satisfied with this after-sales
plan, the hydraulic support has been used for 9 months without any abnormality.

AAK hydraulic cartridge directional control valve, is resistant to high
pressure and has large flow, focuses on stability and reliability, and is
optimized from the following 3 points. It has impressed Primo who has been in
purchasing for 5 years, and also impressed his engineers and boss, making
customers more satisfied.

1. Optimize the opening of hydraulic cartridge directional control valve spool.
The bigger the opening, the weaker the impact of system oil shock and fluid
energy. But this opening must be moderate. If it is too large, it will
backfire. Here's the trick.

2. Using the dynamic characteristic curve, the best matching between the oil
pressure and the half cone angle of the small valve spool is refined. The
suitable half cone angle of the small valve spool can effectively reduce the
pressure impact and increase the stability during the opening process.

3. At the outer side of the large diameter end of the valve spool and at the
beginning of the threaded connection on the inner wall of the valve body, a
stop ring is set, which is also conducive to the stability of the hydraulic
cartridge directional control valve.

AAK hydraulic directional control valve, under high pressure and large flow,
has twice the stability of its peers. You can also have a small try!

https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-directional-
control-valv , es-aak407

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