AAK Hydraulic Cartridge Relief Valve Pressure Fluctuation Solution

Beacan is from Egypt and has been purchased from hydraulic cartridge valve
manufacturers in China for 1 year. In December of last year, a batch of their
hydraulic pilot-operated cartridge relief valves was complained of large
pressure fluctuations by customer. The original manufacturer of the hydraulic
cartridge relief valve said that it was necessary to optimize the internal
structure, but it was uncertain. Beacan contacted other hydraulic cartridge
valve manufacturers, but there was no solution. Beacan was worried.

Beacan found AAK hydraulic cartridge valve website on Google and noticed that
AAK has solved the problem of hydraulic cartridge relief valve for customers.
He left us a message: Can you solve the problem of large pressure fluctuation
of hydraulic cartridge pilot-operated relief valve? After communication, I
learned that he had trouble purchasing the hydraulic cartridge relief valve. He
dissected the original sample and sent me the picture of the internal structure
of the original hydraulic cartridge relief valve. I told him that we had solved
problems of similar cases before and provided him the pictures of hydraulic
cartridge relief valves for his reference. The pilot valve spool of his
hydraulic cartridge relief valve is a traditional T structure, and the inclined
angle with a convex ball is used as a whole, which will lead to abnormal linear
changes in the internal pressure of the hydraulic cartridge relief valve,
resulting in pressure instability or large fluctuations. Beacan should have
accepted our judgment and placed an order of 480 hydraulic cartridge relief
valves directly. He required that the samples should be sent within 40 days.

Last week, Beacan informed us that their customer was satisfied with AAK
hydraulic cartridge pilot-operated relief valve and mass production can be
started. AAK has made 3 optimizations in the pilot valve spool and damping
valve spool to ensure that the valve spool steel ball seals the oil inlet valve
spool, and the pressure fluctuation is small and stable.

1. The pilot valve spool of AAK hydraulic cartridge relief valve adopts
cylindrical groove instead of the original cartridge valve manufacturer's T
structure. The valve spool bevel angle has cylindrical groove, and the groove
is embedded with the valve spool steel ball. The advantage of this is that the
valve spool steel ball can fully fit the valve spool oil inlet, with large
contact surface, and can seal the oil inlet from any direction to avoid
pressure fluctuation.

2. One end of the pressure regulating spring is connected with the pilot valve
spool, and the other end is connected with a damping valve spool. This
advantage is that when it is opened, the oil can quickly fill the cavity
between the pilot valve seat and the main valve spool. The opening speed of the
hydraulic cartridge pilot-operated relief valve can be increased by more than
30%.

3. There are fixed valve sleeves on both sides of the pressure regulating valve
sleeve. The fixed valve sleeve and the pressure regulating valve sleeve are
connected by sealing elements, which can ensure the tightness of the pressure
regulating valve sleeve and the fixed valve sleeve without leakage and ensure
the stability of the pressure.

AAK hydraulic cartridge pilot-operated relief valve, has small pressure
fluctuation and is stable. You can also try it!

https://www.aakindustry.com/info-detail/ca , rtridge-relief-valves-aak530

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