Electrofusion Tapping Tee
Polyethylene electrofusion tapping tee equipped with an integrated under-pressure cutter for live branching in natural gas distribution and pressurized water mains.
- Live under-pressure tapping capability without interrupting gas or water service
- Integrated heavy-duty internal cutter for clean, swarf-free pipe wall perforation
- Precision embedded electrofusion wire coils delivering controlled, leak-proof fusion
- Engineered in strict accordance with stringent EN 1555-3 natural gas standards
- Integrated saddle geometry minimizes excavation footprint and labor duration
Key Specifications
- Product code
- P055
- Reference standard
- EN 1555-3
- Material & grade
- PE
- Outside diameter
- 25–250 mm
- Joint type
- Electrofusion
- Unit of sale
- Piece
- Applications
- Gas distribution, Drinking water supply
- Dimensional options
- 12 rows in the specification table
Working mechanism of electrofusion tapping tees
The electrofusion tapping tee is an advanced fitting engineered for live branch takeoffs on operating natural gas and potable water pipelines. The fitting saddle clamps securely to the pipe perimeter and fuses to the outer surface via internal electrical resistance wires. Following cooling, an internal metallic cutter is threaded downward, perforating the pressurized pipe wall without releasing fluid to the atmosphere.
The circular pipe coupon remains locked within the hollow cutter body, and retracting the cutter establishes free flow into the takeoff branch. EN 1555-3 imposes stringent requirements on dimensional tolerances, fusion zone heating dynamics, and gas-tight sealing integrity.
Dimensional coverage and fusion procedures
Electrofusion tapping tees are typically available for mainline diameters from 25 to 250 mm with branch takeoff diameters from 20 to 200 mm. The outlet spigot connects directly into electrofusion couplers or transition fittings.
Mechanical pipe surface scraping to remove the degraded oxide layer and wiping with approved isopropanol wipes prior to clamping are critical. Fusion cycle parameters are read automatically via barcode scanner. Submit your mainline and branch sizes in our inquiry form for formal technical submittals.
Electrofusion Tapping 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) |
|---|---|
| 25 | 20 |
| 32 | 25 |
| 40 | 32 |
| 50 | 40 |
| 63 | 50 |
| 75 | 63 |
| 90 | 75 |
| 110 | 90 |
| 125 | 110 |
| 160 | 125 |
| 200 | 160 |
| 250 | 200 |
Electrofusion Tapping Tee — FAQ
What sizes are commonly supplied for electrofusion tapping tees?
These tees are typically produced for mainline diameters from 25 to 250 mm with branch outlets from 20 to 200 mm.
Must gas pressure be shut off before tapping the pipeline?
No, the integrated internal cutter allows live under-pressure hot-tapping without line depressurization or gas escape.
How is the electrofusion saddle welded to the pipe?
Using an automated electrofusion control box that scans the fitting barcode and supplies calibrated voltage and fusion time.
Does the cut coupon fall inside the pipeline during tapping?
No, the internal cutter is engineered with retaining lips that securely retain the coupon inside the cutter body.
