What is an electrofusion coupler?

What is an electrofusion coupler?

Electrofusion is another technique for joining Aquatherm pipe (PP-R, RP(RCT))2. It entails using a coupling that is wound with heating element wires embedded in PP-R, which can be slipped over two ends of pipes to be joined.

What is the main difference between conventional heat fusion and electrofusion?

In conventional heat fusion joining, a heating tool is used to heat the pipe and fitting surfaces. The electrofusion joint is heated internally, either by a conductor at the interface of the joint or, as in one design, by a conductive polymer.

What is electrofusion equipment?

Electrofusion is the joining of two polyethylene or other plastic pipes using electrical energy. A copper coil built into the fitting itself is heated using an external fusion machine. Electrofusion is an alternative to other coupling methods such as butt fusion.

How does electrofusion fitting work?

The electrofusion process works by introducing a controlled electrical voltage to the heating coil, which in turn generates heat to melt the fitting and pipe surfaces. As the polyethylene surfaces melt they also expand in volume to close any gaps between the pipe and fitting.

What type of pipe can be joined using electrofusion?

plastic pipes
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.

What is difference between butt fusion and electrofusion?

Pipe material – electrofusion can be used to join different grades of the same material e.g. MDPE to HDPE. Pipe structure – whereas in butt fusion welding the pipes to be joined must have the same wall thickness, with electrofusion a difference in wall thickness can be accommodated.

What is the need of electrofusion?

An electrofusion control unit (ECU) supplies the electrical energy necessary to heat the coil. When the coil is energised, the material adjacent to it melts and forms an expanding pool which comes into contact with the surface of the pipe.

How do you do electrofusion welding?

The Electrofusion welding process involves heat and pressure between the pipe wall and the Electrofusion fitting. If a heavy duty (PN 16 and 25) fitting is welded onto a thin (high SDR) pipe, the pressure exerted on the hot pipe can cause it to collapse.

How HDPE pipes are joined?

Hdpe Pipe is connected by Butt Welding, Electrofusion Welding or mechanical fasteners.

What is the difference between butt fusion and electrofusion?

Can you fuse HDPE to Mdpe?

acceptable provided both bead sizes are uniform around their respective pipes. It is not necessary for the internal bead to roll over to the inside surface of the pipe. One bead larger than the other Different bead sizes are expected when joining different material types, such as heat fusion joining MDPE to HDPE pipes.

How do I connect HDPE fittings?

To make the connections, the perforated metal ring must be placed on the simple end that is connected to the flange, and then, the simple end of the conversion is fused to the simple end of the HDPE ( hdpe pipe flange ). Pipes must be driven in one direction.

How do you connect two HDPE pipes together?

Butt or Fusion Welding uses a heating plate on the squared ends of the HDPE pipes to be joined. After the specified time, the heating plate is removed; pieces are put together and cooled under pressure. Butt welding can be used to join 2 pipes or a pipe to a fitting.