Air flow regulator VFR

FOR THE RELIABLE BALANCING OF VOLUME FLOW RATES Circular flow adjustment dampers for the adjustment of volume flow rates and pressures in supply air and extract air systems Each flow adjustment damper carries a diagram with setting values that ensure rapid commissioning on site Suitable for duct pressures up to 1000 Pa. Volume flow rate can be set using a rotary knob and a scale on the outside of the casing Simple retrofit of an actuator Casing air leakage to EN 1751, class C Optional equipment and accessories Actuator with potentiometer Actuator with mechanical stops Circular flow adjustment dampers for the simple balancing of volume flow rates in air conditioning systems, for supply air and extract air, available in 10 nominal sizes. Ready-to-install flow adjustment damper, unit consists of the casing with damper blade and rotary knob for the infinite adjustment of volume flow rates. SPECIAL CHARACTERISTICS - Diagram with setting values on each flow adjustment damper - Simple retrofit of an actuator is possible MATERIALS AND SURFACES - Casing made of galvanised sheet steel - Rotary knob, damper blade and bearings made of plastic flame retardant (V-0) to UL 94 CONNECTION TYPE Spigot with lip seal, suitable for circular ducts to EN 1506 or EN 13180 TECHNICAL DATA - Flow rate range: 288 - 702 m³/h - Maximum permissible differential pressure: 1000 Pa - Suitable for duct pressures up to 1000 Pa - Casing air leakage according to EN 1751, class C