REHAU Trójnik red PX - RAUTITAN PPSU 20-25-20 fitting for pipe transition

REHAU Trójnik red PX - RAUTITAN PPSU 20-25-20 is a reducing tee fitting designed for use in RAUTITAN PPSU piping systems. The fitting provides a 20 mm to 25 mm to 20 mm branch connection that enables redistribution or transition of fluids in potable water and heating installations. Manufactured for compatibility with RAUTITAN PPSU components, the fitting supports reliable, leak-resistant joins when assembled according to system requirements.

Advantages

The reducing tee is made from PPSU material selected for mechanical strength and long-term resistance to hot water and common plumbing conditions. Its reducer configuration allows straightforward diameter transition within a single fitting, reducing the need for multiple adapters. Designed for integration with RAUTITAN systems, the part gives consistent dimensional compatibility and predictable performance in both domestic and light commercial installations.

Suitable for (tasks / use cases)

• Creating a 25 mm main run with 20 mm branch outlets in potable water systems
• Connecting heating circuit branches with diameter transition requirements
• Retrofit work where a size reduction is needed without introducing multiple couplings
• Use in RAUTITAN PPSU-based plumbing installations in residential or small commercial buildings

Key specifications

• Material: PPSU (polyphenylsulfone) suitable for hot water applications
• Connection type: reducing tee with 20 mm → 25 mm → 20 mm diameters
• Application: potable water and heating circuit compatibility
• Design: push-fit or system-compatible connection geometry for RAUTITAN PPSU components
• Operating conditions: intended for typical domestic hot and cold water temperatures and pressures when used within RAUTITAN system specifications

How to use

Install the reducing tee within a RAUTITAN PPSU piping layout at the point where a 25 mm main line must supply 20 mm branch outlets. Prepare pipe ends by cutting squarely and deburring; confirm pipe cleanliness and correct insertion depth per RAUTITAN guidance. Assemble connections using the recommended tools and techniques for RAUTITAN PPSU components and verify mechanical engagement and sealing. After assembly, perform pressure testing of the circuit in line with local codes and RAUTITAN system instructions before putting into regular service.

Usage recommendations

Use this fitting only with RAUTITAN PPSU-compatible pipes and accessories to maintain system integrity; follow RAUTITAN installation instructions, temperature and pressure limits, and local plumbing regulations. Periodic inspection after installation is advised to verify leak-free operation.