Electrofusion is a method of joining MDPE, HDPE and other plastic pipes using special fittings that have built-in electric heating elements which are used to weld the joint together. … Electrofusion welding is beneficial because it does not require the operator to use dangerous or sophisticated equipment.
What are electrofusion fittings and how do they work?
Electrofusion couplings are fittings used for joining polyethylene water and gas pipes. The electrofusion fittings are made of high-density PE 100, to ensure that the internal layer of the fitting and external layer of the pipe are welded together.
Electrofusion is a method of joining MDPE, HDPE and other plastic pipes using special fittings that have built-in electric heating elements which are used to weld the joint together.
The pipes to be joined are cleaned, inserted into the electrofusion fitting (with a temporary clamp if required) and a voltage (typically 40V) is applied for a fixed time depending on the fitting in use. The built in heater coils then melt the inside of the fitting and the outside of the pipe wall, which weld together producing a very strong homogeneous joint. The assembly is then left to cool for a specified time.
Electrofusion welding is beneficial because it does not require the operator to use dangerous or sophisticated equipment. After some preparation, the Electrofusion Welder will guide the operator through the steps to take. Welding Heat and Time is dependent on the type and size of the fitting. All Electrofusion Fittings are not created equal – Precise positioning of the energising coils of wire in each fitting ensures uniform melting for a strong joint and the minimisation of welding and cooling time.
