Trox - Model UL -Non-Return Damper

• Maximum differential pressure: 100 Pa
• Maximum width of 1600 mm, maximum height of 1615 mm
• Frame with fixing holes along the perimeter
• Available in standard sizes and intermediate sizes (in increments of 1 mm)
• Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals

Optional equipment and accessories

• Installation subframe
• Powder coating, RAL CLASSIC colour

Non-return dampers open and close automatically. When the system is in operation, the blades open when air flows. When the system is shut down, the blades close due to their weight. They safely prevent air from flowing against the intended airflow direction.

• Nominal sizes: 200 × 215 – 1600 × 1615 mm
• Volume flow rate range: 110 – 6460 l/s or 396 – 23256 m³/h at 2.5 m/s
• Total differential pressure: 2.5 m/s at 23 Pa (UL-1)
• Maximum permissible differential pressure in closing direction: 100 Pa
• Operating temperature: -20 to 80 °C

Rectangular non-return dampers to prevent air from flowing against the intended airflow direction; for installation into internal walls and into rectangular ducts.

Ready-to-install component which consists of a border, blades with low-friction bearings, and travel stop and sealing parts.

Special characteristics

• Any intermediate sizes within the standard size range are available
• operating temperature: –20 – 80 °C
• Maximum differential pressure: 100 Pa
• Non-return dampers are opened and closed by the airflow; no actuator is required
• Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation

Accessories

• Installation subframe: Installation subframe for the fast and simple installation of mechanically self-powered dampers

Technical data

• Nominal sizes: 200 × 215 to 1600 × 1615 mm
• Volume flow rate range: 110 – 6460 l/s or 396 – 23256 m³/h at 2.5 m/s
• Total differential pressure: 23 Pa at 2.5 m/s
• Maximum differential pressure in closing direction: 100 Pa
• Operating temperature: -20 to 80 °C

Sizing data

• q_v [m³/h] volume flow rate
• Δp_t [Pa] total differential pressure
• v [m/s] airflow velocity