The Ubbink Air Excellent AE34C 125mm 90° Valve Adaptor is a dedicated ducting accessory designed to connect an AE34C semi-rigid duct to a 125mm supply or extract valve while introducing a neat 90-degree change in direction. It’s the ideal solution for compact ceiling voids and installations where space is tight but airflow performance can’t be compromised.

Fully compatible with the Air Excellent modular ducting system, this valve adaptor uses airtight mechanical connections to deliver a secure, tape-free installation. When fitted using an AE34C seal ring and AE34C click ring, it achieves a reliable ATC1 airtight connection that helps minimise pressure loss, reduce fan energy consumption, and keep system noise to a minimum.

Its efficient radial design ensures smooth airflow through the bend, making installation quicker and commissioning simpler — the sort of thoughtful design installers have always appreciated.

Installation Requirements

• 1 × AE34C seal ring.
• 1 × AE34C click ring.

Key Features & Benefits

• Connects AE34C ducting to a 125mm supply or extract valve.
• Integrated 90° bend for space-saving duct layouts.
• Compatible with Air Excellent modular manifolds.
• Suitable for semi-rigid plastic ducts on a roll.
• Airtight mechanical connections without tape or sealant.
• Low system pressure loss thanks to efficient radial design.
• Airtightness class ATC1 up to ±1000 Pa.
• Helps minimise fan energy use and sound production.

A tidy, well-engineered adaptor that keeps airflow smooth and installs clean — because good ventilation has always been about doing the basics properly.