Compression reducer KAN-therm 40x25 mm model 04108041 for polypropylene (PP) piping

KAN-therm PP reducer 40x25 mm (model 04108041) is a polypropylene compression fitting engineered to join 40 mm and 25 mm PP pipes in plumbing and heating systems. The fitting creates a secure transition between pipe diameters while preserving hydraulic performance and leak-tightness in potable water and heating circuits where polypropylene components are specified.

Advantages

The compression reducer is made of polypropylene, offering chemical resistance, low thermal conductivity and dimensional stability. Its compression connection design enables tool-assisted installation without the need for fusion welding, which simplifies replacement and reduces installation time. The component is compatible with standard PP pipe dimensions and provides reliable sealing under normal operating pressures typical for domestic and light commercial systems.

Suitable for

• Domestic and commercial potable water distribution systems using PP piping
• Heating circuits with polypropylene pipes and manifolds
• Piping sections requiring a reduction from 40 mm to 25 mm diameter
• Renovation or extension work where mechanical connections are preferred

Key specifications

• Material: polypropylene (PP)
• Connection type: compression reducer
• Pipe diameters: 40 mm to 25 mm transition
• Intended use: plumbing and heating systems
• Suitable for potable water and heating media

How to use

Prepare both pipe ends by cutting square and deburring to ensure clean faces. Slide the compression nut and sealing components onto the pipe according to manufacturer guidance, insert the pipe fully into the fitting until it seats, then tighten the compression nut to the recommended torque to form a secure seal. Verify alignment and check the assembly for leaks after pressurizing the system. Follow applicable installation standards and local regulations for potable water and heating installations.

Usage recommendations

Use with PP pipes of the indicated outer diameters and verify compatibility with the system pressure and temperature ratings. Avoid exposing the fitting to unsupported mechanical loads or excessive bending at the joint. When installing in heating systems, ensure appropriate expansion allowances and follow system commissioning procedures to prevent thermal stress.