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Before installation, the directional control valve must always be thoroughly cleaned, especially
after long periods of storage.
Remove the plugs that protect the ports just before the valve is connected in order to
prevent dirt and impurities from penetrating inside.
If the valve was store in a cold place, remove any condensation that might have formed if move
into a warmer environment.
The hydraulic circuits of systems and machines that are finished or are ready for shipping should
be checked at random to ensure that the level of fluid contamination corresponds to the
recommended level: 18/15 - ISO4406 or better.
In the new system, all the pipes must be carefully cleaned before installation in order to remove
dirt
The following cleaning procedures are recommended Sanding, brushing, pickling and flushing
with a solvent
to remove Contaminating particles.
To reduce fluid resistance and the possibility of leaks, use the fewest number of fittings
necessary
for proper installation.
Minimize the number of bends used to prevent excessive turbulence and friction of the fluid.
The
pipes must not have bends with excessively acute angles. The minimum recommended radius is
3 times the internal diameter of the pipe. In high-pressure systems (345 bar or higher), use steel
elbows for curves in order to increase the circuit’s lifetime.
The use of Teflon tape, hemp or other ”fillers” for joints is PROHIBITED
Before starting a new machine, clean (wash) the entire hydraulic system to make sure that paint
residues, metal shavings ,welding residues, etc., have been removed.
Before installation, the directional control valve must always be thoroughly cleaned, especially
after long periods of storage.
Verify that the pipes, fittings and connections are not subjected to mechanical stress.
Make sure that the pipes are not wound and that there are no abrasions on the surface.
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