Electrofusion Coupler
Electrofusion coupler for joining two polyethylene pipe ends of the same diameter in gas and water networks; to EN 12201-3 and EN 1555-3, in the most-used sizes from 20 to 250 mm.
- Joins two PE pipes of the same diameter without rotating or moving the pipes
- Heating wire built into the body, fused with an electrofusion control unit
- For gas distribution (EN 1555-3) and water supply (EN 12201-3) networks
- Suited to line repairs, joining coils and tight spaces where butt fusion is difficult
- Most-used sizes 20 to 250 mm; state the size and the service (water or gas) in your inquiry
Key Specifications
- Product code
- P053
- Reference standard
- EN 12201-3 / EN 1555-3
- Material & grade
- PE
- Outside diameter
- 20–250 mm
- Joint type
- Electrofusion
- Unit of sale
- Piece
- Dimensional options
- 16 rows in the specification table
What an electrofusion coupler is and how it works
An electrofusion coupler is a polyethylene socket with a resistance heating wire embedded in its inner wall. The two pipe ends are pushed in up to the middle of the coupler, and an electrofusion control unit then passes a controlled current through the wire. The heat melts the outer surface of the pipe and the inner surface of the coupler, and once cooled the result is a single, continuous polyethylene joint.
This is why electrofusion couplers are used where butt fusion is difficult or impossible: repairing a line that has been in service, joining two pipe coils inside a trench, or working in confined spaces. The pipes do not need to move along their axis, and the joint is made where the pipe lies.
Gas and water service, and the standards
Electrofusion couplers are used both in gas distribution networks and in water mains. EN 1555-3 covers polyethylene fittings for gas supply systems, and EN 12201-3 covers polyethylene fittings for water supply systems. When ordering, say whether the coupler is for a gas line or a water line.
The joint needs an electrofusion control unit. Correct surface preparation, scraping off the oxidised outer layer and cleaning the fusion zone, and keeping the pipes still until the cooling time has passed are among the most important factors in joint quality.
Electrofusion coupler sizes and how to order
Electrofusion couplers are supplied in the most-used sizes of 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225 and 250 mm. The coupler size is the outside diameter of the pipes being joined.
For a current price, add the size, quantity and service (gas or water) to the inquiry list on this site, or call us. We give technical advice on choosing the right fitting before you buy, issue an official invoice, and ship to other cities as well.
Electrofusion Coupler — Technical Specifications
Wall thickness and weight are calculated from the standard series and are approximate; final values are confirmed in the quotation.
| Outer Diameter (mm) |
|---|
| 20 |
| 25 |
| 32 |
| 40 |
| 50 |
| 63 |
| 75 |
| 90 |
| 110 |
| 125 |
| 140 |
| 160 |
| 180 |
| 200 |
| 225 |
| 250 |
Electrofusion Coupler — FAQ
How does an electrofusion coupler differ from a compression coupling?
A compression coupling seals mechanically with a nut and an O-ring, while an electrofusion coupler melts the polyethylene and forms a welded joint that is continuous with the pipe and is also used in gas networks.
What machine is needed to fuse an electrofusion coupler?
An electrofusion control unit, which feeds current to the heating wire inside the coupler. The unit is listed on this site with its standard, ISO 12176-2.
Which sizes of electrofusion coupler are supplied?
The most-used sizes from 20 to 250 mm. Give the size, quantity and service when you send your inquiry.
Is an electrofusion coupler suitable for pipeline repairs?
Yes. Because the pipes do not have to be moved, an electrofusion coupler is one of the usual ways to join two pipe ends during a line repair.
