TPi October 2010

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46 Tube Products International October 2010
Fi t t ings
A system is only as good as its weakest
component part. In pipe systems, this
weak point is the joint, as a rule. Pipe
systems from Rehau aim to break
that rule. Apart from the permanently
tight compression sleeve jointing
technique, the polymer processor offers
in its range the temperature-resistant
Fusapex electrofusion fitting, a jointing
technique designed for district heating
and industrial pipe systems.
The electrofusion fitting made of cross-
linked polyethylene is used in district
heating supply systems, in heating
installations or in the transport of
thermal waters, chemicals as well as hot
aggressive media. It can be employed
up to temperatures of 95ºC and ensures
absolutely tight joints. Together with
the pipe systems for district heating
(Rauthermex or Rauvitherm), for
industrial heating (Rautherm-FM) and
for chemicals, water, compressed air or
inert gases (Raupex), it produces a fully
polymer and thus corrosion-resistant
system. In addition, the Fusapex
jointing technique can be used in the
Electrofusion fitting special system Raufrigo-FW for heating
installations with integrated Rautherm-
FW basis pipes.
Rehau’s basic idea of a fully polymer
system is pursued by the extension of
the range of fittings of Fusapex. The
new Fusapex reducing adapters and
flange connections are made of PE-Xa
and can be used universally with all
Fusapex fittings with integrated heater
coils.
The new Fusapex flange connections
made of PE-Xa are chamfered on the
inside of the flange and therefore allow
unproblematic opening and closing of
commercially available flange-connected
flaps. There is no need for special flaps
for pipes made of polymer material. The
integrated lapped flange facilitates the
installation and cannot be forgotten.
The new flow-optimised reducing
adapters made of PE-Xa are available
in every combination in a dimensional
range of 75 to 160mm. On account
of the compact construction, every
dimensional reduction can be set up
depending on the site’s requirement,
even in a very small space.
Fusapex fittings in the dimensions
50 and 63mm have been added to
the range. In addition, Rehau offers a
suitable welding tool for uncomplicated
processing.
Rehau AG + Co – Germany
Fusapex fittings
Fusapex assembly Fusapex being used to connect
pipes in the Rauthermex district
heating system