Pipe adapter Supratherm 25/20 (PP-R) model 2204593 for connecting 25 mm to 20 mm piping

Supratherm PP-R pipe adapter 25/20 (model 2204593) is designed to connect a 25 mm polypropylene-random (PP-R) pipe to a 20 mm pipe. The adapter is suitable for plumbing, heating and cooling installations and provides a secure, leak-resistant transition between two pipe diameters. It is intended for use in domestic and light commercial systems where corrosion-resistant plastic piping is required.

Advantages

The PP-R adapter is lightweight while offering high impact resistance, wear resistance and chemical resistance. It is rated for continuous operation at temperatures up to 90°C and is compatible with standard PP-R piping systems, enabling durable, maintenance‑friendly connections without risk of galvanic corrosion.

Suitable for

• Domestic hot and cold water supply lines
• Heating systems and radiators
• Air conditioning and chilled water circuits
• Light commercial plumbing installations

Key specifications

• Brand: Supratherm
• Model / MPN: 2204593
• EAN: 5945792204593
• Material: PP‑R (polypropylene‑random)
• Connection sizes: 25 mm to 20 mm
• Maximum recommended temperature: up to 90°C

How to use

Prepare the PP‑R pipes by cutting squarely and removing burrs. Fit the adapter to the 25 mm and 20 mm pipes using the recommended PP‑R joining method (heat fusion or compatible mechanical fitting) according to installer guidelines and local plumbing codes. Ensure correct alignment and allow any welded joints to cool before pressurizing the system. Verify the joint integrity by pressure testing after installation.

Usage recommendations

Use appropriate fusion equipment rated for PP‑R materials and follow manufacturer and local standards for temperature, pressure and joint preparation. Avoid exposing the adapter to direct flame or solvents not compatible with PP‑R. For applications above 90°C or where mechanical loads are significant, consult system specifications and consider alternative materials.