NEW: air flow regulator by Systemair

The air flow regulator RDA is an element placed inside the duct in order to obtain a constant flow within a pressure range from 50 to 200 Pascal. It is used in ventilation or air conditioning systems for supply or return air.

Ordering code

RDA-80-15/30/45

80 - size of the duct in mm

15/30/45 - possible air volumes in m3/h

Function

The air is forced to pass through predetermined space in which a flap can change the position according to the specified air flow. The flap is attached on to a calibrated spring and therefore no auxiliary power is needed. Possible air volumes can be adjusted by removing the spacers and shims from the body of the unit (part of delivery). The smallest air volume can be achieved by keeping all the spacers and shims inside the unit. If a spacer or shim is removed the predetermined space becomes larger, thus next constant air volume setting is achieved.