Reinforced hoses
may have several
layers of wire,
textile fibers,
or special materials
to retain working
pressures and allow
the hose to perform
in the working
environment.
In application equipment, the discharge hose
is one of two hoses connected to the pump and
is always on the out flow. The discharge hose
usually experiences the highest pressures when
the pump is left running, valves are closed, or the
pressure regulator does not react fast enough to
divert flow from the nozzles back to the tank.
To understand how different hoses withstand
different pressures, it’s important to know how
hoses are made. Each hose is made of a tube
surrounded by a reinforcement layer and a cover.
The tube, of course, must be compatible with the
material that will flow through it and offer some
pressure protection.
To withstand higher pressures, hose manufac-
turers use various reinforcement materials to hold
the core together. Reinforcement materials can
be made of stainless steel wire or textile materials
combined into single or double braids, depending
on expected hose pressures. Greater reinforcements
increase the pressure ratings.
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