- Circular shut-off damper
- Airtight shut-off
- Manual action or electronic or pneumatic actuator
Airtightness at shut-off
Manual actuation
Electronic or pneumatic actuator
Adjustment of air duct pressures
Adjustment with air flow measurement
Adjustment based on duct network calculation
circular
Δp: up to 1,500 Pa
Ø 100 – 400 mm
Casing air leakage flow rate complies with DIN EN 1751, class A
Control damper closed blade leakage complies with DIN EN 1751, class 4 (nominal size 100 and 125, class 3)
circular
Δp: up to 1,500 Pa
Ø 125 – 315 mm
Casing air leakage flow rate complies with DIN EN 1751, class A
Control damper closed blade leakage complies with DIN EN 1751, class 4 or 3
circular
Δp: up to 1,000 Pa
Ø 80 – 250 mm
Casing air leakage flow rate complies with EN 1751, class B
