The Ubbink Air Excellent AE55SC Valve Adaptor 125mm 90° is a duct accessory designed to connect AE55C semi-rigid ducting to a 125mm ventilation valve at a right angle. It forms part of the Air Excellent system, built for quick installation, airtight integrity, and long-term efficiency in modern ventilation and MVHR setups.

Featuring a radial internal design, this 90° valve adaptor maintains smooth airflow while keeping system pressure loss to a minimum—helping reduce fan energy consumption and operating noise. The adaptor connects using one AE55C seal & click ring (required, not included), creating a secure mechanical joint without the need for tape or additional sealants.

Compatible with modular manifolds and suitable for use across all six Air Excellent duct types, this adaptor is ideal for neat, space-saving connections to supply or extract valves in residential and light commercial applications.

Key Features

• 90° valve adaptor for AE55C semi-rigid ducting.
• Connects to 125mm ventilation valves.
• Airtight mechanical connection using seal & click ring system.
• Low system pressure loss due to radial design.
• Airtightness class ATC2 up to ±1000 Pa.
• Helps minimise fan energy use and sound production.
• Compatible with modular manifolds and all Air Excellent duct types.
• Fast, clean, and reliable installation.

Installation Note
Requires 1 × AE55C seal & click ring to connect the AE55C duct to the adaptor (sold separately).

Straightforward, well-made, and does exactly what it should—proper kit for a proper ventilation job.