PEX-AL-PEX pipe is a five-layer composite pipe that
combines the advantages of a metal and plastic pipe and eliminates the
disadvantages of both materials at the same time. The aluminum core is absolutely
diffusion tight; it reliably prevents oxygen/gases from permeating into pipe.
It compensates and reduces snap-back forces and heat expansion with changes of
multilayer composite pipe consists of an overlapped or butt welded aluminum
core with an inner and outer layer or high temperature-resistant polyethylene.
All layers are permanently bonded together by intermediate adhesive layers. The
aluminum thickness for PEX-AL-PEX pipe has been selected to meet compressive
and flexural strength requirements.
Overlapped welded PEX pipe is co-extruded with one step with perfect adhesive
between inner layer and aluminum, high and stable pressure resistance, of which
welding style is ultrasonic.
The aluminum core is continuously
overlapped or butt-welded and prevents oxygen/gases from permeating into the
PEX pipe. Consequently, the corrosion of metallic installation components is
inner and outer plastic layers hold water at bay- preventing deposit
accumulation and corrosion. At normal temperature, it can withstand all kinds
of acid, alkali, and salt solution.
PEX is cross-linked polyethylene. Through one of several
processes, links between polyethylene molecules are formed to create bridges
(thus the term "cross-linked). This resulting material is more durable
under temperature extremes, chemical attack, and better resists creep
deformation, making PEX an excellent material for hot water and other
PEX 's flexibility and strength at temperatures ranging
from below freezing up to 200 degrees Fahrenheit makes it an ideal piping
material for hot and cold water plumbing systems, service lines, hydronic
radiant heating systems, snow melting applications, ice rinks and refrigeration
The flexibility of PEX allows it to be supplied in coils
meaning installations under the slab can be made in a single, continuous length
without the need for fittings. PEX is not affected by concrete.
money in many ways. For the installer, PEX tubing is competitively priced.
Installation of flexible systems is fast because of the easy handling of the
tubing and PEX installation requires fewer directional fittings. Since most
plumbing problems occur at joints, fewer fittings also reduce the chances for
leaks and callbacks, saving the installer even more time. The homeowner saves
in the cost of the installed system, and can reduce utility costs in some
Home run or
manifold plumbing systems utilizing PEX tubing can substantially reduce water
and energy consumption in a home. The home-run concept provides dedicated
direct lines from the manifold to the fixtures, reducing the amount of water that
must be purged from the lines to get hot water at the fixture. Direct lines can
be sized to the fixture requirements, further reducing the amount of time to
wait for hot water. Faster hot water delivery reduces water waste and the
amount of times the water heater must cycle to supply hot water.
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