Act1 Electrofusion Welder
06/06/2011
www.ProcessPipes.co.uk
Pg 23
JOINTING GUIDE
In this method of fusion jointing, an electrofusion fitting which contains a coil of electrically
conductive coated wire, is heated by having an electrical current passed through it. This heat melts
the polypropylene plastic in a controlled manner, and allows it to be fused to a section of pipe
which has previously been inserted into it.
Electrical current is provided by an electrofusion welding machine & typical example of which is
shown and which can be hired from CPV Ltd.
It is vitally important that the correct procedures are followed when making an electrofusion joint,
and the following steps are mandatory for this process:
Step 1 - Cleanliness
Cleanliness and correct preparation are vital to a good installation. The welding surfaces of the
peeled pipe and electrofusion fitting must be kept clean, dry and grease free. After cleaning
never touch these surfaces with bare hands.
Step 2 – Pipe preparation
Prepare the pipe for cutting to the correct length and ensure that the end cuts are perpendicular
to the centre line. Use a rotary pipe cutter rather than a hand saw as this ensures a perpendicular
cut. Remove burrs, both inside and out.
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