Reducer internal MAGNAPLAST 420410 for D32 to D40 pipes, white

The MAGNAPLAST internal reducer 420410 is designed to connect pipes with outer diameters D32 and D40, providing a sealed transition that maintains flow continuity in plumbing and drainage systems. Its white finish is intended for visible installations where a neutral appearance is preferred. The reducer fits inside the larger pipe and adapts the connection to a smaller diameter without altering the exterior line, supporting water, waste and ventilation piping in domestic and commercial environments.

Advantages

This internal reducer offers a compact solution for changing pipe diameters while preserving a continuous inner profile and minimizing turbulence at the connection point. The white finish provides a discreet look for exposed installations. The part is made to integrate with standard D32 and D40 piping, ensuring a secure fit and reliable sealing when installed correctly, which helps prevent leaks and maintain system efficiency.

Suitable for

• Adapting plumbing lines from D40 to D32 in household installations
• Drainage and wastewater systems requiring a sealed diameter transition
• Ventilation ductwork and low-pressure pipe runs where an internal reducer is preferred
• Commercial installations needing a compact, unobtrusive connection between different pipe sizes

Key specifications

• Type: internal reducer for pipe connection
• Compatible outer diameters: D40 (larger) to D32 (smaller)
• Color/finish: white for visible installations
• Application: plumbing, drainage, wastewater and ventilation piping
• Mounting method: inserted into the larger pipe to adapt to the smaller pipe diameter

How to use

Ensure both pipe ends are clean, free of debris and cut squarely. Insert the reducer into the D40 pipe until it seats firmly, then align and insert the D32 pipe into the reducer until it reaches full engagement. Use the appropriate sealing method for your system—such as solvent welding, gasketed joints or approved adhesive—according to pipe material and local installation standards. Verify alignment and test the connection for leaks before returning the system to service.

Usage recommendations

Choose the correct joining technique compatible with the pipe material and building codes. For visible installations, verify the white finish matches surrounding fittings; for buried or concealed runs confirm that the reducer is suitable for the expected mechanical and pressure conditions. Perform a pressure or leak test after installation and inspect periodically as part of normal system maintenance.