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New trenchless sewer repair system launched

A new polyurethane resin-based system for repairing broken or fractured sewer pipes has been launched, offering significant time and cost savings for utility firms.

Supplier Innovative Sewerage Technologies (IST) has launched what it claims to be the world’s first polyurethane-based Cure-In-Place Pipe (CIPP) repair system for the trenchless technology market.

IST’s solution comprises a traditional needle-felt liner and a polyurethane resin called Vitrox, developed by chemical company Huntsman Polyurethanes. Vitrox resin is a two-component system that can be applied for up to 24 hours after mixing.

Its increased working time window has the potential to revolutionize CIPP working practices. Traditionally companies repairing sewer networks have had to rely on epoxy resins with a relatively short working time window. This meant impregnating hoseliners on site, prior to insertion, often under unfavorable conditions.Using Vitrox, liners can be prepared off site, the day before application, at a suitable indoor location. This reduces the risk of mixing faults, which can occur on outdoor sites because of inclement weather conditions. It also means actual repair work can start on site as soon as the team arrives each day – saving time and money.

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