AAK embedded the filter into the body of the hydraulic check valve

Nicholas is from an Italian hydraulic company. Last year, a batch of hydraulic
equipment needed to use the hydraulic check valve urgently. Due to tight
time, Nicholas purchased in Italy. After installing the local hydraulic check
valve, the equipment commissioning was normal, but 3 months later, some users
complained that the pressure of the power unit was insufficient. It was found
that the hydraulic check valve was stuck on site, resulting in weak pressure
supply of the system. 
 
Nicholas contacted the original hydraulic check valve supplier and the
supplier replied that the jamming was caused by unclean hydraulic oil. The on-
site personnel found that the hydraulic oil was polluted, so they could only
disassemble and clean the stuck hydraulic check valve. After replacing the
hydraulic oil of the whole system, the equipment returned to normal. But a few
months later, the same problem happened again, and Nicholas's after-sales
personnel operated again as last time. The boss felt that the problem should be
solved fundamentally after he knew it. Such after-sales cost is too high. Their
engineers fed back that they could only install the filter screen at the inlet
of the hydraulic check valve, but the original design of the equipment did not
consider the position of the filter screen. It will cost more to refit the
whole set of equipment.
 
The boss asked Nicholas to contact more local hydraulic check valve
manufacturers to brainstorm. After knowing the problem with this hydraulic
check valve from Nicholas, and the hydraulic oil is inevitably polluted,
combining with their equipment working conditions and installation drawings, I
told him that we can only find hydraulic check valve with filtering function.
AAK has similar hydraulic check valve with automatic filtering function.
Nicholas doesn't believe that AAK can provide such a hydraulic check valve.
After receiving AAK sample and installing it, the equipment works normally.
Nicholas asked us how long AAK hydraulic check valve with filter screen can
work? We told him that there would be no users to apply for repair within
1 year.
 
Nicholas asked why we are so confident. I told him that a Canadian customer had
the same problem last year. We developed this new hydraulic check valve. Within
one year, Canadian customer has not reported that there is a problem with this
hydraulic check valve yet. Half a year later, Nicholas sent an email saying
that his customers had never changed the hydraulic oil after
using AAK hydraulic check valves.
 
At that time, in order to save the installation space of filter plug-ins for
the hydraulic system of Canadian customer, not to use bulky filter containers,
and keep the system clean and extend the service life of hydraulic check
valves, AAK designed a hydraulic check valve with filter embedded
into the body, that is, the filter screen and the hydraulic check valve are
installed in the valve block together. The filter made of 304 stainless steel
can effectively remove the fine particles in the hydraulic oil, and it is no
longer necessary to change the hydraulic oil once every 3 months.
 
AAK hydraulic check valve with filter screen saves money and worry. You can
also have a small try!

https://www.aakindustry.com/info-detai , l/hydraulic-check-valves-aak199

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