Technical data

Examples of Incorrect Electrofusion Joints
EXCESS GAP
When the gap between the pipe and fitting is excessive the expansion of
molten polyethylene cannot completely fill the space for a successful fu-
sion. This can be caused by undersized pipe, over scraping, or severely
out of round pipe.
SHORT-STAB / BINDING
A short-stab is the result of not centering the pipe ends in the fitting.
Binding is caused by a severe mis-alignment or excessive lateral forces
on the joint. The result of either of these situations is excess flow of mol-
ten material, loss of pressure at the fusion interface, and poor joint in-
tegrity.
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