PE-RT II Electrofusion Coupler

PE-RT II electrofusion coupler is designed for straight joining of compatible PE-RT II pipes using electrofusion welding. The listed range covers 20 mm to 1000 mm with SDR11 / PN16, SDR13.6 / PN12.5 and SDR17 / PN10 options according to the model list below.

All Models & Specifications

Available PE-RT II electrofusion coupler size and SDR / PN combinations are listed below. Please provide the required size, pressure class and quantity when requesting a quotation.

SDR11 / PN16

Size (mm)
20
25
32
40
50
63
75
90
110
125
140
160
180
200
225
250
280
315
355
400
450
500
560
630
710
800

SDR13.6 / PN12.5

Size (mm)
1000

SDR17 / PN10

Size (mm)
315
355
400
450
500
560
630
710
800
900
1000

About PE-RT II Electrofusion Coupler

PE-RT II electrofusion coupler is used to make a straight welded connection between two compatible PE-RT II pipes of the same outside diameter. The fitting contains an integrated heating element that is energized by compatible electrofusion equipment to create the joint.

It is suitable for straight-line connections in PE-RT II heating, hot-water circulation, HVAC hydronic and other compatible thermal-fluid systems. The required coupler must match the pipe size and the listed SDR / PN configuration, and the pipe surface should be prepared according to the applicable electrofusion procedure before welding.

About PE-RT II Material

PE-RT II (Polyethylene of Raised Temperature Resistance Type II) is a thermoplastic polyethylene material developed for piping systems that must maintain mechanical strength at elevated temperatures. Compared with conventional polyethylene, PE-RT II offers improved long-term temperature resistance while retaining the benefits of a weldable plastic piping system.

Because PE-RT II remains thermoplastic, compatible pipes and fittings can be joined by butt fusion or electrofusion to create a continuous all-plastic welded pipeline system. The material is also valued for corrosion resistance, resistance to internal scaling, relatively low weight, smooth internal surfaces and installation flexibility.

Operating Temperature

PE-RT II is used in hot- and cold-water and heating applications where elevated-temperature performance is required. The exact allowable temperature depends on the pipe and fitting design, SDR or wall thickness, operating pressure and the specified application class. Many PE-RT II piping systems are designed for long-term service in approximately the 70–80°C range, while short-term or maximum design conditions can reach about 95°C. Final temperature and pressure limits should always be confirmed against the actual pipe specification and project design conditions.

Typical Applications

• Secondary district-heating and heat-distribution networks
• Building heating and hot-water circulation systems
• Radiant heating and underfloor heating systems
• HVAC hydronic heating and cooling circuits
• Heat-pump and geothermal circulation systems
• Compatible industrial hot-water and thermal-fluid pipelines
• Other hot- and cold-water piping applications requiring a corrosion-resistant welded plastic system

Selection Considerations

For project selection, the required pipe outside diameter, SDR or wall thickness, design pressure, normal operating temperature, maximum temperature, fluid medium and installation method should be confirmed together. This is especially important for heating networks because allowable pressure changes with operating temperature and intended service life.

Product Details

Applications & Installation

Frequently Asked Questions

What size range is listed?

The listed PE-RT II electrofusion coupler range covers sizes from 20 mm to 1000 mm.

Which SDR / PN options are listed?

The model list includes SDR11 / PN16, SDR13.6 / PN12.5 and SDR17 / PN10 configurations. Availability varies by size as shown in the table.

What information should I send for a quotation?

Please send the required size, SDR / PN, quantity and delivery destination so we can confirm availability, pricing and lead time.

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