PE100 Electrofusion Multiseal Tapping Tee Underclamp DN40-225 | 4mm Auto Pin |

Product Specification

What is a Multiseal Tapping Tee Underclamp?

A PE100 electrofusion Multiseal tapping tee underclamp provides a direct service connection from a live or dead PE main — the underclamp wraps around the main pipe, the fusion mat is welded to the pipe wall, and the outlet creates a branch for service lines from DN40 to DN225mm mains with 20-32mm outlets.

It delivers security, safety, simplicity and speed at the point of installation. The tamper-proof LockCap guarantees correct installation — it cannot be over-tightened and won't vibrate loose — while two O-ring seals protect against leakage. An optional cutter tube locks into the integral cutter for a leak-free cut-through of the main pipe.

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.

Typical Applications

• Live-main service connections without interrupting flow
• Gas network branch connections to district networks
• Water utility service tappings from distribution mains
• Irrigation lateral connections from trunk lines
• Mining process water service branches
• Rapid repair and retrofit of existing PE networks

Key Features & Benefits

• 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 11–17.6, covering common PE pipe wall thicknesses
• 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
• Permanent batch number clearly marked for traceability
• 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

Reference Numbers & Dimensions

Note: Sizes DN40-50 use an underpart with a single screw clamp. All stated technical specifications depend on the PE pipe welded to and local pipeline pressure regulations. SDR 11 applies to DN40-50; SDR 11-17.6 applies to DN63-225. Please contact us for detailed CAD drawings.

Product Standards & Certifications

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.

Shipping & Delivery Information

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.

After-Sales Service & Warranty

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.

Frequently Asked Questions

Common questions about our Multiseal tapping tee underclamp