Non-return Dampers
UL
FOR INSTALLATION INTO WALLS OR RECTANGULAR DUCTS
Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation
- Maximum differential pressure: 100 Pa
- Angle section border to be installed in wall openings
- Available in standard sizes and many intermediate sizes
- Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation
Optional equipment and accessories
- Installation subframe
- Powder coating (RAL or DB)
KUL
FOR INSTALLATION INTO DUCTWORK
Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation
- Maximum differential pressure: 100 Pa
- Casing with U-channel connection suitable for rectangular ducts
- Available in standard sizes and many intermediate sizes
- Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation
Optional equipment and accessories
- Installation subframe
- Powder coating (RAL or DB)
ARK
FOR HEAVY-DUTY APPLICATIONS
Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation
- Air leakage with back pressure to EN 1751, class 4
- Maximum differential pressure: 5000 Pa
- Blades made of aluminium, casing made of galvanised steel
- Available in standard sizes and many intermediate sizes
- Variant ARK (with linked blades) for variable volume flows
- Variant ARK-1 (with adjustable blade restrictors) for constant volume flows
- Installation in horizontal or vertical ducts
Optional equipment and accessories
- Installation subframe
- Powder coating (RAL or DB)
- Stainless steel construction with stainless steel casing; blades made of aluminium
- Temperature resistant up to 200 °C with Viton seal