Coupling internal repair D75 PP — MAGNAPLAST 12220

The MAGNAPLAST coupling internal repair D75 PP is a polypropylene (PP) sleeve designed for internal pipe repair and joining of pipes with a 75 mm nominal diameter. It provides a corrosion-resistant, non-metallic connection intended for sewer, drainage and other non-pressure pipe restoration tasks. The product is intended to be installed from inside the pipe to seal leaks or reinforce a damaged section without extensive excavation.

Advantages

The coupling's polypropylene construction offers chemical and corrosion resistance and a long service life in typical wastewater and drainage environments. Its internal installation design enables repair work without external access or pipe replacement, reducing excavation and surface disruption. The coupling delivers a compact, low-profile connection that fits within the pipe bore and provides a sealed joint when installed correctly.

Suitable for

• Repairing leaks in 75 mm nominal diameter sewer and drainage pipes
• Restoring non-pressure plastic piping runs without excavation
• Internal reinforcement of damaged pipe sections
• Temporary or permanent sealing of joints and small fractures

Key specifications

• Material: polypropylene (PP)
• Designed nominal pipe diameter: 75 mm
• Application type: internal repair / coupling for non-pressure systems
• Suitable media: sewage, drainage and similar wastewater
• Installation orientation: internal insertion within pipe bore

How to use

Prepare the damaged pipe section by cleaning internal surfaces to remove debris, sediment and loose material. Inspect the pipe to ensure the damaged area is accessible and measure the internal diameter to confirm compatibility. Insert the PP coupling into the pipe and position it to cover the damaged section or joint. Follow the manufacturer's recommended method to secure and seal the coupling internally: this may include mechanical expansion, use of compatible sealing elements or approved adhesives compatible with polypropylene. After installation, verify the seal by conducting a water or vacuum test as appropriate for the application.

Usage recommendations

Use personal protective equipment during installation and ensure the pipe is emptied and ventilated according to safety rules. For long-term installations, confirm chemical compatibility of polypropylene with the specific wastewater contents and follow local codes for sewer and drainage repairs.