AAK Hydraulic Cartridge Flow Control Valve Zero Leakage

Adam, an old American hydraulic customer, sent AAK 3 emails consecutively on
the same day last month, for the leakage of a hydraulic cartridge flow control
valve. According to the picture he sent, the hydraulic cartridge flow control
valve has a cut-off plate that is supported by a spring. Some customer
complained that the hydraulic cartridge flow valve leaked without working. The
original manufacturer of the hydraulic cartridge flow control valve cannot
solve the problem in 3 months. Because the sales volume of this hydraulic
cartridge flow control valve is very good, Adam wants it 100% no complaints.

Through the pictures, it is difficult to trace the cause. I suggested Adam send
us 3 samples of the original hydraulic cartridge flow control valves. After we
received and checked the samples, we found that the leakage was more serious if
we pressurized, but the tightness of the cut-off plate was no problem. We
adjusted the spring, and the first pressurization did not leak, but after 3
times, the leakage occurred. It was basically judged that the spring has hidden
danger. After the spring tension test, it was found that the spring is
abnormal.

2 days later, we informed Adam of the hidden danger of the spring, and at the
same time, we replaced the internal springs of the 3 hydraulic cartridge flow
control valves with AAK springs, and returned the samples to him. 2 weeks
later, Adam sent a PO for this hydraulic cartridge flow control valve, with a
value of more than 30,000 dollars, and told us that the 3 returned samples were
tested for 5 pressurizations, and no leakage was found, and the operating
efficiency of the hydraulic system was also improved by nearly 10%. Adam
privately ridiculed himself. He has been engaged in the hydraulic valve market
for so many years, but still has to ask for help from AAK when there is a
problem that he cannot solve.

The main reason why AAK can effectively solve the leakage problem caused by
springs, is to ensure the following 3 points:

1. We have our own spring source that has cooperated with us for 10 years, to
avoid the phenomenon of unequal material between the sample and the production
spring, and ensure the quality.

2. Equipped with spring tension and compression tester, reasonably select the
spring with elastic coefficient within the standard range, to avoid leakage
caused by elastic coefficient deformation.

3. A quality inspection department to ensure that the quality is qualified
during assembly and prevent leakage.

AAK hydraulic cartridge flow control valve, 3-step check on the spring, zero
leakage, welcome to try!

https://www.aakindustry.com/info-detai , l/cartridge-flow-control-valves-aak469

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