8 Fusion Operating instructions IM 160
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8 Fusion
8.1 The basics of butt fusion
For butt fusion with a heating element, the parts to be joined (pipe/pipe,
pipe/fitting or fitting/fitting) are heated to fusion temperature in the
fusion area and are fused under pressure without the use of additional
materials.
The heating element butt fusion joint must be done with a controllable
equalization pressure. See pressure/time tables, Chapter 8.5, from pg. 24.
Only the same type of materials are to fuse.
The wall thicknesses in the fusion area need to be the same.
Correct Incorrect
Only the same wall thicknesses in the fusion
area!
Equalization and fusion pressure are identical. The heat soak pressure is
significant lower, but the contact between the pipe/fitting and the
heating element needs to be ensured.
Attention
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