Stackable Electrofusion Tapping Tee | 63mm High-Flow Outlet | 4mm Auto Pin |

The Stackable electrofusion tapping tee with 63mm outlet is the high-capacity member of the Multiseal tapping range — a single 63mm service outlet delivers the largest branch flow of the family, ideal for heavy-duty connections to gas, water and mining networks.

It mounts on the largest mains in the range: DN250 to DN450mm (including a combined 400–450mm size), spanning SDR 11–21. The stackable body nests safely for storage, while the fusion mat welds to the pipe wall and the outlet creates the branch — live or dead main, without shutting down the pipeline.

Manufactured from virgin PE100 black polyethylene, rated PN16 for water and 10 bar for gas. For UK gas applications: 5.5 bar Class B / 7 bar Class C (size and outlet dependent). Operating temperature range: −10°C to +40°C.

• High-flow gas service connections from large distribution mains
• Water utility service tappings with high demand
• Mining process water and slurry network branches
• Irrigation trunk-line lateral connections
• Industrial plant service feeds from DN250–450 mains
• Rapid repair and retrofit of existing PE networks

• 63mm high-flow outlet — the largest service outlet in the Multiseal tapping range
• Covers the biggest mains: DN250 to DN450mm including combined 400–450 size
• Stackable body design — fittings nest safely together, cutting storage space and freight volume
• Manufactured using virgin PE100 black polyethylene for long-term durability
• Water PN16 / Gas 10 Bar rating (dependent on PE pipe welded)
• Live or dead main connection — no need to shut down the pipeline
• Tamper-proof LockCap — cannot be over-tightened, won't vibrate loose
• Two O-ring seals protect against leakage at the clamp interface
• Optional cutter tube locks into the integral cutter for leak-free cut-through of the main pipe
• Double spigot outlet — sufficient spigot length to cut off the coupler and fuse a second fitting
• Optimised saddle and fusion mat minimize joint cycle times
• 4mm automatic pin — auto-detects welding parameters, prevents operator error
• SDR range 11–21 across the full size range
• Rising pin fusion indicators allow easy visual monitoring of the fusion process
• Welding parameters moulded directly into the fitting body
• Individually numbered for precise batch tracking and quality control
• Barcode and QR code enables full traceability back to raw materials
• Welding barcode compliant with ISO 13950; traceability barcode compliant with ISO 12176-4
• Fully welded joint — no gaskets, no flanges, no future maintenance

Note: The 400–450*63 size is a combined fitting covering both 400mm and 450mm mains (H1 258mm for 400mm, 283mm for 450mm). All stated technical specifications depend on the PE pipe welded to and local pipeline pressure regulations. Please contact us for detailed CAD drawings.

Our electrofusion tapping tees are designed and manufactured to meet international product standards, backed by ISO 9001 and ISO 29001 quality management system certifications. The Fusamatic range is third-party certified against the standards below.

• EN ISO 15494 — Plastics piping systems — Polyethylene (PE) for industrial applications (3rd party approved)
• EN 12201-3 — Plastics piping systems for water supply — Polyethylene (PE) — Part 3: Fittings (3rd party approved)
• EN 1555-3 — Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings (3rd party approved)
• ISO 4437-3 — Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings (3rd party approved)
• ISO 4427-3 — Plastics piping systems for water supply — Polyethylene (PE) — Part 3: Fittings (3rd party approved)
• Welding barcode compliant with ISO 13950
• Traceability barcode compliant with ISO 12176-4

Note: Regional variations may apply. Other product certificates available upon request.

We export PE electrofusion tapping tees worldwide. Small sizes are packed in cartons on pallets; larger sizes are individually polybagged and crated for safe sea freight. The stackable design also reduces freight volume for bulk orders.

We stand behind the quality of our electrofusion fittings. Our commitment doesn't end at delivery — we provide comprehensive technical support for your PE pipeline project.

Common questions about our 63mm outlet stackable tapping tee.