AAK Hydraulic Cartridge Proportional Control Valve with Dual Flow Control

Timon is from a hydraulic equipment manufacturing company in the Netherlands.
He has been smooth on purchasing hydraulic cartridge valves from China. A
hydraulic cartridge proportional control valve he purchased in the second half
of last year was in trouble. For a customer, they customized a hydraulic
forging presses, which require high speed when unloaded and low speed when
overloaded. The key to the stability of the hydraulic system and the stepless
speed control of the equipment is the hydraulic cartridge proportional control
valve. Timon worked with a manufacturer of hydraulic cartridge proportional
control valves who has cooperated with them for 3 years to try samples. During
equipment commissioning, the main working cylinder had abnormal pressure
relief, which would seriously affect the service life of the equipment. After
several rounds of inspection, the problem was locked in the structure of the
hydraulic cartridge proportional control valve, but the original manufacturer
was unable to optimize it. Timon contacted more than 10 hydraulic cartridge
valve manufacturers. A week passed, but there was no solution. Their engineer
has push for progress 3 times.

Timon found AAK Hydraulic Valve on Google, stayed on our website for 11
minutes, and left a message:
1. Can AAK optimize the structure of a hydraulic cartridge proportional control
valve?
2. Can the optimized hydraulic cartridge proportional control valve improve the
large pressure impact of the hydraulic system?
3. What is the lead time and development cost for customizing the hydraulic
cartridge proportional control valve?

After communication, we learned about Timon's procurement dilemma. After
checking the system schematic diagram and original design drawings of his
hydraulic cartridge proportional control valve, AAK engineers understood the
direction of optimization. When Timon learned that AAK was 90% sure to be
successful, he asked us to make samples. After 30 days, AAK sent 10 samples of
hydraulic cartridge proportional control valves. 3 weeks later, Timon said that
the equipment had been delivered to the customer, and their engineers were very
satisfied with AAK hydraulic cartridge proportional control valve, which
completely solved the problem of large pressure impact in the hydraulic system
of the forging press.

AAK hydraulic cartridge proportional control valve can accurately control small
flow and large flow, with small flow fluctuation and small pressure impact. The
key is that AAK hydraulic cartridge proportional control valve has the function
of variable flow gain. The structure is that the lower part of the hollow valve
spool is put into the valve cage and sealed with the valve cage line. The upper
part of the hollow valve spool is matched with the control cover plate. The
upper end of the control cover plate is connected with the valve cover, and the
valve cover is equipped with a displacement sensor. A pilot control valve is
installed on the side of the control cover plate. The port at the bottom of the
valve spool is processed with a semicircular hole, and the valve cage is
provided with 4 symmetrical waist holes. With the optimized structure, when the
opening of the hydraulic cartridge proportional control valve is small, the
flow gain is small, and high-precision linear control of small flow can be
realized. When the opening amount is large, the flow gain is large, and high-
precision linear control of large flow can be realized. Under the high-
precision linear control of large flow, the hydraulic cartridge proportional
control valve has small flow fluctuation, small pressure impact, and the
service life of the valve is increased by at least 30%.

AAK hydraulic cartridge proportional control valve, variable flow gain
function, you can also have a small try!

https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-proportional-
control-val , ves-aak411

Click to Enlarge