Butt-Fusion Reducer
Concentric polyethylene butt-fusion reducer for secure and continuous diameter transitions in pressurized water, wastewater, and industrial pipelines.
- Tapered concentric transition maintaining laminar flow patterns and minimizing head loss
- Direct butt-fusion jointing to adjacent pipes ensuring uncompromised structural integrity
- Manufactured across standard dimension ratios SDR 11, SDR 13.6, and SDR 17
- Superior resilience against abrasive slurries, aggressive acids, and corrosive soils
- Designed for an engineering service life exceeding 50 years in underground mains
Key Specifications
- Product code
- P050
- 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
Hydraulic role of polyethylene butt-fusion reducers
The concentric butt-fusion reducer is a tapered fitting connecting two pipes of differing diameters along a common centerline. It is vital for velocity regulation, flow optimization, and adapting main line diameters to pumps, flow meters, or valves in plant chambers. The gradual internal taper eliminates abrupt boundary-layer separation, localized cavitation, and dynamic turbulence.
Per EN 12201-3 guidelines, reducers are molded from high-density polyethylene resin. Both ends are machined to match the specific wall thickness (SDR) of connecting pipes, facilitating even heat soaking and symmetrical bead formation during butt-fusion.
Dimensional combinations and fusion instructions
Butt-fusion reducers typically bridge larger diameters (od_mm) from 110 to 315 mm down to smaller diameters (od2_mm) from 90 to 250 mm across SDR 11, SDR 13.6, and SDR 17 pressure schedules.
During machine setup, installing differential clamp inserts matching each diameter on the fusion chassis is critical to maintain true concentric alignment. Submit your diameter steps and pressure requirements via our RFQ form for formal quotations.
Butt-Fusion Reducer — 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 Reducer — FAQ
What sizes are commonly available for butt-fusion reducers?
These reducers are typically produced with major diameters from 110 to 315 mm and minor diameters from 90 to 250 mm.
What SDR classes are typical for butt-fusion reducers?
Reducers are predominantly supplied in SDR 11 (16 bar), SDR 13.6 (12.5 bar), and SDR 17 (10 bar) pressure classes.
Are these reducers concentric in design?
Yes, standard butt-fusion reducers feature a symmetrical concentric cone maintaining alignment along the pipe centerline.
Do polyethylene reducers resist chemical and acid attack?
Polyethylene is chemically inert, resisting deterioration from aggressive acids, alkaline solutions, and saline environments.
