Compression coupling WAVIN 20 mm PN20/20C (model 3248042501) for polypropylene pipes

WAVIN compression coupling 20 mm PN20/20C is a mechanical joining fitting designed for straight connections of 20 mm polypropylene pipes. The coupling provides a reliable sealed joint without the need for welding or solvent cement, enabling quick assembly and straightforward maintenance in pressurized plastic piping systems. It is intended for applications requiring a PN20 pressure rating and is compatible with standard 20 mm polypropylene piping used in potable water, heating circuits and general plumbing installations.

Advantages

The coupling offers a compact design that maintains flow continuity and minimizes pressure drop. Its compression sealing system creates a secure, leak-resistant joint while allowing disassembly if system modifications are needed. Materials and construction are selected to withstand PN20 operating pressures and typical temperatures encountered in domestic and light commercial water and heating systems. Installation requires only basic tools and reduces downtime compared with welded or glued connections.

Suitable for

• Connecting straight runs of 20 mm polypropylene pipes
• Potable water distribution systems
• Domestic and small commercial heating circuits
• Plumbing repairs and retrofit projects
• Temporary or modular piping installations

Key specifications

• Pipe diameter compatibility: 20 mm polypropylene pipes
• Rated pressure class: PN20
• Connection type: compression coupling for straight pipe joint
• Suitable media: potable water, heating fluids and general plumbing media
• Service temperature: suitable for typical domestic heating and hot/cold water ranges (consult system requirements)
• Maintenance: removable and reusable design for inspection and replacement

How to use

Prepare pipe ends by cutting square and ensuring they are clean and free from burrs or deformation. Slide the coupling components onto each pipe end according to the manufacturer’s assembly sequence, then insert the pipe fully into the fitting until it reaches the internal stop. Tighten the compression nut(s) evenly using appropriate hand or standard tools until a secure seal is achieved; avoid over-tightening. Verify alignment and perform a pressure test at the system’s working pressure to confirm leak-free performance before putting the circuit into regular operation.

Usage recommendations

Use the coupling only with compatible 20 mm polypropylene pipes and within the specified PN20 pressure and temperature limits. For potable water and heating applications, follow local regulations and installation codes. If in doubt about system compatibility or for high-temperature/high-pressure duty beyond typical domestic ranges, consult technical documentation or a qualified installer.