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Air volume control damper
Ventilation control dampers — manual and automatic airflow control on duct branches
Control dampers are the elements that enable hydraulic balancing of the ventilation installation — correct distribution of airflow across each branch of the duct network so that every grille or diffuser receives exactly the design airflow. Without control dampers, air follows the path of least resistance, preferentially supplying the shortest or largest branches while leaving other zones under-ventilated. Manual dampers: manually adjustable blade(s) via a shaft with position indicator. Set once during system balancing and fixed permanently. Simple, economical solution for stable installations not requiring airflow changes after commissioning. Actuator dampers: the damper blade is driven by an electric actuator receiving a command signal from a thermostat, CO₂ sensor, BMS controller or timer. The basis of VAV (Variable Air Volume) systems in modern buildings. Available in circular (direct mounting on spiral duct) and rectangular (for sheet metal rectangular ducts) forms.
DA+SERV 220 ON/OFF 500 x 500 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
Pre-order
Dampers D 200 x 100 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
In stock
Dampers D 500 x 120 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
In stock
Dampers D 500 x 150 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
In stock
Dampers D 500 x 80mm - Airflow Control, HVAC System, Ventilation
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
In stock
Dampers DA 200 x 200 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
Pre-order
Dampers DA 400 x 400 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
In stock
Dampers DA 700 x 400 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
Pre-order
Dampers DA 750 x 250 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
In stock
DampersDA 450 x 450 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
Pre-order
Dampres DA 850 x 850 mm
Multiple leaf air volume control damper for installation in square or rectangular air ducts.
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Damprs DA 500 x 250 mm
Damper DA 500×250 mm — multiple leaf volume control damper for installation in square or rectangular air ducts. Frame in galvanised sheet steel.
Aerodynamically shaped aluminium blades with simultaneous, opposite rotation driven by plastic gears inside the frame — protected from pollution and corrosion.
Blades fitted with rubber seals for improved air-tightness.
Air leakage in closed position: Class 2 to EN 1751:1998.
Manual blade angle adjustment.
Two DA dampers can be connected (same or opposite rotation) using connection elements.
Blades are parallel to the first nominal dimension (500 mm).
Available with electric ON/OFF actuator 220V or analogue electric actuator 24V.
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