- Composite hose is used in all types of applications.
- The primary reasons for its popularity and use are:
- Chemical resistance
More flexible than most other hose types
The many layers of plastic that are used in the construction
of a composite hose are not glued or sealed together. As a result,
when composite hose is moved or bent, the layers slide
upon the other layers giving ease of bending and an excellent
Composite hoses are designed to be “fail safe”.
There are basically 2 areas on a that can fail:
a) The Hose
Because of the many layers of tubes and films that make up a composite
hose, there is not a direct leak path for liquid to follow. For
a leak to occure, liquid must surpentine its way through the
many layers of the hose until it reaches the outer cover. Once
the liquid reaches the outer cover, small drops will form along
the seam line indicating that a leak is occurring.
In other types of hose, leaks are usually more catastrophic.
It is possible for the wall of the hose to rupture, without
any warning, and create a large scale failure in the hose.
b) The End Fitting
The end fittings on composite hose are specifically designed
to be “fail safe” and reduce the chance of a fitting
blowing off the end of the hose.
Composite hose fittings have a spiral shank or tail piece that
actually screws into the composite hose. For the end
fitting to blow out of the hose it has to be unscrewed from
the hose. The screwed in end fitting in combination with the
swaged on ferrule make this type of coupling one of the
safest to use.
- Chemical Resistance
Composite hoses are most commonly used in the transfer of chemicals.
With the bore of the hose made from wide varieties of plastics
including polyproylene, Teflon and nylon most common chemicals
can be accommodated by the many different styles of composite
The large variety of chemicals that can be handled with composite
hose in combination with the great flexibility, high safety
factors, and “safe failing” designs all add up to
make this a very versatile hose for the industrial market place.