Butt-Fusion Tee
Polyethylene butt-fusion tee in equal and reducing configurations for high-pressure branching in municipal water transmission, industrial piping, and sewer systems.
- Seamless molecular fusion joint matching the integrity and strength of the parent pipe
- Manufactured from virgin polyethylene resin for exceptional reliability in buried mains
- Available across standard dimension ratios including SDR 11, SDR 13.6, and SDR 17
- Total immunity to sewer gases, industrial effluents, soil corrosion, and scale buildup
- Streamlined hydraulic internal geometry reducing pressure drop at the branch takeoff
Key Specifications
- Product code
- P049
- Reference standard
- EN 12201-3
- Material & grade
- PE
- Outside diameter
- 110–315 mm
- SDR
- 11, 13.6, 17
- Joint type
- Butt fusion
- Unit of sale
- Piece
- Applications
- Drinking water supply, Sewage, Gas distribution
- Dimensional options
- 15 rows in the specification table
Structural characteristics of butt-fusion PE tees
Polyethylene butt-fusion tees, produced via injection molding or engineered segmented fabrication, provide permanent, reliable branch takeoffs for medium- and large-diameter mains. Jointed to adjacent pipes using hydraulic butt-fusion equipment, the molten interface consolidates into a continuous, leak-free pipeline without mechanical seals or metallic hardware.
Governed by EN 12201-3 specifications for pressure water conveyance, the weld interface must match the long-term hydrostatic strength of the pipe itself. Fitting wall thicknesses align strictly with the SDR rating of the adjacent piping, ensuring balanced hoop stress tolerance under internal pressure and external soil loading.
Dimensional range and fusion procedures
Butt-fusion tees are typically supplied in outside diameters from 110 to 315 mm with equal or reducing branches (od2_mm from 90 to 250 mm), across SDR 11 (PN16), SDR 13.6 (PN12.5), and SDR 17 (PN10) classes.
Strict adherence to heater plate temperature, interfacial drag pressure, and cooling duration under clamp pressure is mandatory to form uniform double welding beads. Specify run diameter, branch takeoff size, and SDR rating in our quote form for official submittals.
Butt-Fusion Tee — 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) | Second Diameter (mm) | SDR |
|---|---|---|
| 110 | 90 | 11 |
| 110 | 90 | 13.6 |
| 110 | 90 | 17 |
| 160 | 110 | 11 |
| 160 | 110 | 13.6 |
| 160 | 110 | 17 |
| 200 | 160 | 11 |
| 200 | 160 | 13.6 |
| 200 | 160 | 17 |
| 250 | 200 | 11 |
| 250 | 200 | 13.6 |
| 250 | 200 | 17 |
| 315 | 250 | 11 |
| 315 | 250 | 13.6 |
| 315 | 250 | 17 |
Butt-Fusion Tee — FAQ
What pressure classes are typical for butt-fusion tees?
These fittings are typically produced in SDR 11, SDR 13.6, and SDR 17, corresponding to PN16, PN12.5, and PN10 pressure ratings.
What diameter ranges are typically available?
This fitting is commonly supplied in outside diameters from 110 to 315 mm in equal or reducing branch variations.
Is specialized equipment required to install this tee?
Yes, installation requires calibrated butt-fusion welding rigs fitted with hydraulic clamps, facers, and thermostatic heating plates.
Can butt-fusion tees be utilized in natural gas networks?
When produced from certified gas-grade resin under relevant gas standards, polyethylene fusion fittings are suitable for gas mains.
