Trox - Model KUL -Non-Return Damper

• Maximum differential pressure: 100 Pa
• Casing with flange that fits rectangular ducts
• Maximum width of 1600 mm, maximum height of 1615 mm
• 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

• Casing with flange holes
• Installation subframe (only KUL-G)
• 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.

Specification text

Rectangular non-return dampers to prevent air from flowing against the intended airflow direction; for installation into internal walls and into rectangular ducts. Casing with flange holes if required. Ready-to-install component which consists of a casing, blades with low-friction bearings, blade restrictors and blade tip seals.

Special features

• Any intermediate sizes within the standard size range are available
• Operating temperature -20 to 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 attenuating the blade noise

Materials and surfaces

• Casing, mullion and travel stop (angle section) made of galvanised sheet steel
• Blades made of formed aluminium
• Blade shafts made of brass
• Side bar made of PVC plastic
• Blade tip seals made of polyester foam
• Blade restrictors made of PC plastic
• P1: Powder-coated, RAL CLASSIC colour

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