AC4209 Fernco Adaptor Coupling 395mm - 420mm / 265mm - 290mm

Fernco AC4209 adaptor coupling with a banded seal, designed for pipe with an outside diameter of 395mm to 420mm and 265mm to 290mm. Manufactured from EPDM rubber, incorporating a Grade 1 304 stainless steel band.

The Fernco AC4209 Adaptor Coupling is a heavy-duty flexible connector designed to join extra-large drainage pipes of different outside diameters while maintaining a secure, long-lasting seal. Built for demanding environments, this adaptor coupling is ideal for major repair works, system upgrades and new installations across industrial, commercial and infrastructure drainage systems.

EPDM Adaptor Coupling Data Sheet

Manufactured from premium EPDM rubber and reinforced with corrosion-resistant stainless steel clamp bands, the AC4209 delivers a dependable airtight and watertight connection capable of withstanding environmental stress, ground movement and prolonged use. Its flexible sleeve compensates for minor pipe misalignment and allows smooth transitions between mixed pipe materials such as PVC, clay, concrete and cast iron. Installation is straightforward using standard hand tools, helping reduce labour time while ensuring professional-grade results.

Key Features & Benefits:

• Designed for extra-large mixed-diameter pipe transitions
• Flexible EPDM rubber body for secure sealing
• Corrosion-resistant stainless steel clamps
• Provides an airtight and watertight connection
• Accommodates slight pipe misalignment and movement
• Easy, tool-friendly installation
• Compatible with multiple drainage pipe materials
• Ideal for large-scale commercial and industrial drainage

The AC4209 is a dependable choice for contractors requiring strength, flexibility and sealing confidence in extra-large drainage systems.