Technical data

33
Compressed Air Applications Manual | Flange joints/screwed connections Compressed Air Applications Manual | Material
Resistance
Plastics have become established as
suitable materials for modern pipe
systems. Plastic pipes have proved their
excellence not only for water applications
but also for transporting highly corrosive
fluids. Hybrid pipes consisting of metal/
plastic or glass have been replaced by
cheaper and safer all-plastic pipes with
long durability.
The Chemical Resistance List is a useful
guide for general information about the
compatibility of PB with liquid or gaseous
media. The list is regularly revised and
updated. However, the data are based
on immersion tests with samples that are
not under mechanical load. Consequent-
ly, the results are not fully applicable to
pipes under stress or interior pressure.
The effect of chemical mixtures may be
different, due to the interaction of their
components, to the known effect of the
individual components. With regard to
special applications we would be ready
to advise you at any time.
Changes in the composition of the fluid
being transported or special operating
conditions can result in a different mate-
rial behaviour compared with the data
listed in the table. Where in doubt, it is
advisable to carry out tests (test installa-
tion) under the relevant operating condi-
tions. The data contained in the list are
for information only and cannot be used
in the context of guarantee claims. These
data correspond to the state of the art
and may be amended in the light of new
findings. Updates are made on a regular
basis.
We would be pleased to send this list to
you upon request.
Classification
The usual classification for plastics uses the following reference levels:
+ Resistant Use of polybutene possible
O Limited resistance Restricted use of polybutene
- Not resistant Use of polybutene normally not possible
Resistant: +
Within the specified pressure and tem-
perature limits the material is not, or
only slightly, affected by the fluid trans-
ported.
Limited resistance: O
The fluid transported attacks the ma-
terial or causes swelling of the mate-
rial. With respect to pressure and/or
temperature, it will be necessary to lay
down appropriate limits taking account
of the expected service life. A notice-
able shortening of the service life can-
not be excluded.
Not resistant: -
The material cannot be used for this
particular fluid or can only be used un-
der special conditions.
The technical data
are non-binding. They
do not represent an
assurance of proper-
ties. Beko reserves the
right to make changes.
Applicable are our
General Terms and
Conditions of Sale
Material