Off-Centre Compensating Ring (Ear); When Is An Ear Required - Rehau AWADUKT FLEX-CONNECT Montageanleitung

Please note:
- Installation, backfilling and compacting of the excavation pit has to be carried out in compliance with the
specifications of the installation guidelines to DIN EN 1610
- For ribbed, corrugated and structured pipes, it has to be ensured that the relevant ribs, corrugations and lugs
do not get deformed during the installation as sufficient compression and permanent leak-tightness cannot be
ensured otherwise
- Prior to installing/assembling AWADUKT FLEX-CONNECT at temperatures below 0 °C, we recommend to store the
pipe coupler at room temperature as otherwise it cannot be guaranteed that it is fully functional
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Off-centre compensating ring (EAR)

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When is an EAR required?

Off-centre adapter ring for polymer pipes to reduce a
possible shoulder (step invert ) during the connection
with different pipes
Standard DIN EN 476 "General requirements for
components used in drains and sewers" requests:
pipe connections up to DN/OD 315 or DN/ID 300
must not exceed a shoulder of 6 mm (corresponds to
an internal diameter difference of 12 mm).
We therefore recommend to use an EAR when
connecting polymer pipes (e.g. PP to DIN EN 1852-1)
with pipes made of other materials if the difference of
the internal diameters of the two pipes exceeds 12
mm.
EN
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