IT Jan 2008 - Industrial Technology Magazine

Logic element
combines flexibility
with performance
Integrated Hydraulics is now offering a new
spool-type logic element that combines
excellent performance with great flexibility.
This valve can perform a variety of
functions by using a control cartridge that
screws into the back of the main cartridge
Integrated Hydraulics’ cartridge
valves have excellent characteristics
and the new LE402 is no
exception. Careful sleeve and spool
design give low pressure drops
preventing excessive amounts of energy
from being wasted and the close
tolerancing of the spool and sleeve
ensures minimal internal leakage.
The valve is flexible in its
application and can be used in many
hydraulic circuits. It can be controlled
by a number of different pilot
cartridges, for example screwing a
small 1 l/min relief into the back of
the cartridge enables it to function as
a main 350 bar relief with flows of up
to 350 l/min, or if you fit a
proportional pilot relief valve, it
becomes a high-flow proportional
relief valve.
Alternatively, fitting a pilot
solenoid valve will produce a 350
l/min electrically operated dump
valve. This is an added advantage
when it comes to inventory costs.
Only one component needs to be
stored as interchangeable valves can
then be screwed into the back of it, to
alter the function. The product is
compact because the controlling
cartridge is simply screwed into the
back end of the main cartridge.
Machining required to install the
cartridge is also minimal, as only one
cavity is required due to the utilisation
of piggy back valve technology.
Minimising risk of leaks
The maximum working pressure on
the nose is 350 bar and maximum
tank line pressure is 210 bar, the
nominal flow rate is 350 l/min. These
cartridge valves can be fitted into
standard line bodies or used, with
other valves required in a system, in
hydraulic integrated circuits or
manifold blocks. If the latter option is
used, the designer can reduce the
number of joints in the system,
minimising the possibility of oil leaks,
concentrate most or all of the valves
into one self contained, pre-tested
block both speeding assembly and
reducing space requirement.
MORE INFORMATION:
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for further details from Integrated Hydraulics
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January 2008 • INDUSTRIAL TECHNOLOGY
More details: Write in 491 on the free information card
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