Page 364 - MidlandMetalsCatalog2010baNN

363
H
YDRAULIC
HYDRAULIC HOSE & FITTINGS HOSE INSTALLATION
In straight hose installations, allow enough slack in the hose
line to provide for changes in length that will occur when
pressure is applied. This change in length can be from +2%
to -4%.
1. Provide for length change.
3. Protect from hazardous environment
5. Use proper bend radius.
8. Avoid improper hose movement
2. Avoid twisting and orient properly.
4. Avoid mechanical strain.
6. Secure for protection.
Keep hose away from hot parts. High ambient temperature
will shorten hose life. If you can not route it away from the
heat source, insulate it.
Keep the bend radius of the hose as large as possible to
avoid collapsing of the hose and restriction of flow. Follow
catalog specs on minimum bend radii.
Make sure reative motion of the machine components
produces bending rather than twisting of the hose. Hose
should be routed so that the flex is in the same plane as the
equipment movement.
Do not twist hose during installation. This can be determined
by the printed layline on the hose. Pressure applied to a
twisted hose can cause failure or loosening of connections.
Use elbows and adapters in the installation to relieve strain
on the assembly and to provide easier and neater installations
that are accessible for inspection and maintenance.
Install hose runs to avoid rubbing or abrasion.