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6.4
Cooling times
For cooling times item 4.10 is appli-
cable.
6.5
Relining fittings and clips
(top loading)
When fitting saddle components
(Figure 29) care must be taken with
any ovality or flattening of the HDPE
pipe. In order to achieve a uniform
surface pressure, and thus a proper
fusion, the radius of curvature on the inner liner at the site of the proposed
joint must correspond to the diameter range d of the moulded component
being used. If necessary the saddle must be brought into line either axially or
radially.
The assembly of the saddle components occurs according to items 5.1.1
to 5.1.6
Before the renovation the old pipe should be cut away at the point where a
moulded saddle component is to be fused to the inner liner pipe. The pipe
diameter will be brought to size at the proposed jointing point by fitting half
shells.
When fitting a house connection at some later point access to the inner liner is
gained by using a window cutter to get through the old pipe.
Figure 29
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Summary of Contents for FRIALEN
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