1. Avoid torque. Do not twist the hose assembly
during installation when aligning the bolt holes
in a flange or in mating up pipe threads. The utilization
of lap joint flanges or pipe unions will minimize
this condition. It is recommended that two wrenches
be used in making the union connection: one to prevent
the hose from twisting and the other to tighten
the coupling.
2. Prevent out-of-plane flexing
in an installation. Always install
the hose so that the flexing takes place in only
one plane--this being the plane in which the bending
occurs.
3. Avoid over bending. The repetitive
bending of a hose to a radius smaller than teh radius
listed in the specification tables for corrugated
hose will result in early hose will result in early
hose failure. Always provide sufficient length to
prevent overbending and to eliminate strain on the
hose.
4. Avoid careless handling of the
hose assembly. Always lift
or carry metal hose to prevent abrasion damage particularly
to braided corrugated hose. Store metal hose assemblies
away from areas where it can be subjected to spillage,
corrosive fumes or sprays, weld splatter, etc.
5. Always support the piping.
A piping system which utilizes metal hose to absorb
movement must be properly anchored and / or guided.
Always support the piping to prevent excessive weight
from compressing the hose and relaxing the braid
tension.
