Elbow fitting Ricom KOLANO KONC PP-AL 87° DN80/125 for pipe transition

Ricom KOLANO KONC PP-AL 87° DN80/125 for pipe transition is an elbow fitting designed to connect duct or pipe sections with nominal diameters DN80 and DN125 while changing direction by 87 degrees. Manufactured from a composite of polypropylene and an internal aluminum reinforcement layer, the fitting offers a compact transition solution for ventilation, ductwork and industrial piping systems where a slight angular offset between different diameters is required.

Advantages

The PP-AL construction combines the chemical resistance and low weight of polypropylene with the structural stability provided by the aluminum layer, ensuring consistent shape and dimensional stability at the bend. The 87° angle delivers a near-right-angle change of direction without the increased length of a full 90° elbow. The concentric design simplifies alignment between DN80 and DN125 pipes and reduces turbulence at the junction compared with abrupt diameter changes.

Suitable for

• Ventilation and air distribution systems requiring diameter transitions
• Ductwork installations in residential and commercial buildings
• Industrial piping where compact angular transitions are needed
• Retrofitting or modification of existing pipe runs with mixed diameters

Key specifications

• Material: polypropylene with aluminum reinforcement (PP-AL)
• Angle: 87 degrees
• Connection type: concentric transition between two nominal diameters
• Nominal diameters: DN80 and DN125
• Application: ventilation, duct systems and industrial piping

How to use

Install the elbow fitting by aligning the DN80 and DN125 ends with the corresponding pipe sections, ensuring a snug fit and correct orientation for the required 87° deflection. Secure joints according to the pipe system’s connection method (e.g., solvent welding, mechanical clamps or sealing rings) and verify that seals are intact and leak-free. Observe manufacturer and local code requirements for support spacing, thermal expansion allowances and airtightness when integrating into ventilation or duct systems.

Usage recommendations

Use appropriate sealing and fastening methods compatible with polypropylene components and ensure the aluminum layer is not exposed to corrosive environments. For optimized airflow, avoid sharp obstructions near the transition and provide sufficient straight runs upstream and downstream to reduce turbulence.