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1) Use the proper "Live Length". - Live length is the measurement
of the actual flexible portion of the hose assembly. Different
fittings differ in length, which affects the Live Length in relation
to the Overall Length of the assembly. Live Length is an important
aspect of hose specification particularly in hose installations
which require a sharp degree of bend or repetitive flexing. Never
attempt to stretch or compress a hose assembly.
2) Avoid Abrasion. - External abrasion or constant rubbing
will damage the braid reinforcement thereby weakening the hoses
very pressure retention. Hose assemblies with visibly damaged braid,
including broken wire, should be replaced immediately! If
your installation requires a degree of abrasion (confined space,
dragging on the floor, etc.) we STRONGLY reccomend a choice of
external protective cover.
(PVC, Rubber, Armor Casing)
3) Hose Storage. - Proper storage also adds significantly
to the life of a hose assembly. The assembly should be properly
supported so that it never exceeds bend radius. Hoses should not
be stored in areas of possible corrosion attack or chemical spills.
There should never be anything placed on top of a hose assembly,
while in storage or in use. See our Hose Rack page for hose storage
solutions.
4) Never use the hose assembly to support weight. - The
hose assembly should never be used to support the weight of valves
or piping. Pipe should be properly supported with anchors.
5) Clean hose assemblies after each use. - Flushing and
rinsing hose assemblies after each use goes a long way towards
a long hose life. Proper cleaning removes corrosive materials and
residual product which can attack the hose inner core.
6) Never, never, torque a hose assembly. - Hose assemblies
are not designed to withstand twisting or torsional forces. Torque
can occur upon installation or when the hose is in use, through
out of plane flexing.
When installing a metal hose, always use two wrenches, one to
hold the hose to prevent it from twisting and the other to tighten
the fitting. Always make sure that movement remains in the same
plane as hose installation. (see chart for examples) Always use
the proper hose length. Hose assemblies that are measured short
can exceed bend radius casuing stress and premature failure. If
a bend is too sharp, use elbows.
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| Illustration B |
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Incorrect |
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