Compression reducing coupling Comap MultiSkin PPSU 32x20 – reducing fitting 32 mm to 20 mm

Comap MultiSkin PPSU compression reducing coupling 32x20 is a reducing fitting designed to connect a 32 mm pipe to a 20 mm pipe. Constructed from PPSU (polyphenylsulfone), the coupling offers chemical and temperature resistance suitable for potable water and heating systems. The compression design creates a mechanical, leak-tight connection without the need for solvent welding or soldering, enabling fast installation and reliable transitions between different pipe diameters.

Advantages

The PPSU material provides high resistance to hot water, pressure and common plumbing chemicals while maintaining dimensional stability. The compression mechanism ensures a secure seal on both pipe sizes and reduces installation time compared with traditional joining methods. The compact form of the reducing coupling is suitable for confined spaces and compatible with common plastic and multilayer pipe types, offering durable service life in domestic and light-commercial applications.

Suitable for

• Reducing a 32 mm supply line to a 20 mm branch for potable water distribution
• Repairing or modifying existing plumbing where a step-down in pipe diameter is needed
• Connecting heating system circuits that require different pipe sizes
• Installation in tight spaces where a compact reducing fitting is preferred

Key specifications

• Material: PPSU (polyphenylsulfone) for temperature and chemical resistance
• Connection type: compression coupling (reducing) for mechanical seal
• Pipe sizes: inlet 32 mm → outlet 20 mm
• Application: potable water and heating systems
• Suitable pipe types: plastic and multilayer pipes commonly used in plumbing

How to use

Prepare both pipe ends by cutting square and removing burrs, then ensure the pipes are clean and free of debris. Slide the compression nut and any supplied olive or ring onto the pipe as required, insert the pipe fully into the coupling until it seats against the internal stop, and tighten the compression nut to the specified torque or until the manufacturer’s recommended engagement is achieved. After assembly, check the connection visually and perform a pressure test according to system requirements to confirm leak-tightness before putting the installation into regular service.

Usage recommendations

Use this reducing coupling in systems within the recommended temperature and pressure ratings for PPSU components. Avoid using the fitting with incompatible fluids or in applications requiring soldered metal-to-metal joints. When connecting different pipe materials, verify compatibility and follow installation torque guidelines to ensure a reliable seal and long-term performance.