Hydraulic Directional Control Cartridge Valve 1 more Function 3 Advantages

Chapin is from Canada and has purchased hydraulic cartridge valves in Ningbo
for 5 years. At the beginning of this year, their hydraulic cylinder needed
hydraulic directional control cartridge valve. He found a hydraulic directional
control cartridge valve manufacturer in Ningbo to test the sample, but it was
not successful. When the external load of the oil cylinder suddenly changes,
the response of the hydraulic direction control cartridge valve is slow, and
the shunt accuracy cannot keep up with it, which is not synchronized with the
execution of the oil cylinder. According to the feedback from the original
manufacturer of the hydraulic directional control cartridge valve, this is the
standard model of HydraForce hydraulic directional control cartridge valve. Now
the function does not match, so he can only replace it with other model of
HydraForce standard parts. Chapin was a little confused.

Chapin contacted AAK under the introduction of his friends, and told us the
dilemma of the hydraulic directional control cartridge valve sample at present,
and asked whether AAK could improve the function of the original hydraulic
directional control cartridge valve to match the cylinder execution
synchronization? 2 days later, AAK's plan was ready. Chapin paid the
development fee the next day and asked for AAK samples. After 40 days, AAK sent
the samples of hydraulic directional control cartridge valves.

Yesterday, Chapin informed us by email that the test run was successful. After
replacing with the AAK hydraulic directional control cartridge valve, the
cylinder execution was synchronized and the stability was improved. The
prototype has been delivered to the customer. AAK hydraulic directional control
cartridge valve has fast response, high shunt accuracy and stability. These 3
advantages are attributed to the optimization of 3 structures based on the
original hydraulic directional control cartridge valve.

1. On the main valve sleeve wall of the hydraulic directional control cartridge
valve, there are external main oil ports, 2 external load oil ports, locating
pins, floating steel balls, and grooves corresponding to the through-hole. The
floating steel balls float between the bottom of the locating pins and the
grooves. This ensures that the internal load oil port and the external load oil
port are always connected, which can realize the static two-way stroke
correction of the two load cylinders, and remove the obstacles for
synchronization.

2. The spool valve of the hydraulic direction control cartridge valve is
sleeved with an inner main oil port and an inner load oil port, and the
throttling channel connected with the inner main oil port is on the valve
spool. The throttling channel has a fixed orifice and a variable orifice which
are connected with each other. The fixed orifice is connected with the inner
main oil port. The spool slides back and forth in the spool sleeve to adjust
the flow area between the throttle passage and the internal load port.

3. There is also a dynamic variable damping device between the spool and the
spool sleeve. When the load suddenly changes, the dynamic variable damping
device, under the effect of hydraulic pressure difference, pushes the spool to
move, and increases the damping force of the spool when it slides back and
forth in the spool sleeve to change the dynamic characteristics of the spool
when it slides back and forth in the spool sleeve, reducing the dynamic flow
error, and improving the accuracy of diversion.

AAK hydraulic directional control cartridge valve, has 1 more function than
HydraForce and 3 advantages. You can also try it!

https://www.aakindustry.com/info-detail , /directional-control-cartridge-valves-
aak531

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