When a damaged or misaligned pipe threatens to bring your project to a standstill, you need a solution that's fast, reliable, and built to last. The Fernco DN100 Internal Push Fit Coupling is engineered to rescue problem pipes and restore full function — without the hassle, the heavy machinery, or the costly excavation work.

Unlike traditional repair methods that demand access to the pipe's exterior, this clever internal coupling works entirely from within — meaning you can tackle repairs in tight, confined, or hardtoreach spaces without breaking a sweat. Simply push it in, push the connecting pipe on, and you're done. No tools. No fuss. No delays.

Designed to keep water flowing exactly as it should, the coupling's tapered profile minimises bore reduction and disruption to natural flow, so performance is never compromised. The builtin pipe stop takes the guesswork out of installation — when it sits flush with the pipe end, you know the job is done right, every time.

• Repair pipes in minutes — a toolfree push fit connection that anyone can master on the first attempt
• Works on virtually any pipe material — delivering a watertight seal regardless of what you're connecting
• No external access needed — ideal for buried, concealed, or otherwise inaccessible pipework
• Superior stability from the inside out — internal placement provides a stronger, more secure joint than external alternatives
• Handles realworld pressure — rated to withstand up to 2.5 bar internal pressure for lasting peace of mind
• Foolproof installation indicator — the integrated pipe stop confirms correct fitting at a glance
• Certified quality you can trust — fully compliant with BS EN 2954:2013 for guaranteed performance standards

Whether you're a professional contractor racing against the clock or a trades specialist who simply won't accept secondbest, the Fernco Internal Push Fit Coupling delivers a permanent, watertight solution that stands the test of time. Stop the leak. Restore the flow. Get the job done right.