Specification:
Extruded Aluminium Heavy Duty Non Return Damper for One Way Restricted Air Flow with Rigid Aluminium Blades and gasket. Linkage can be provided to connect all blades as option for simultaneous operation.
DESCRIPTION
Frame and blades are made of high quality extruded aluminium profiled construction with the advantages of corrosion resistance and rigidity.
Air operated damper blades are fixed to the frame by self-lubricating metal bushes and reinforced with round metal pipes end to end.
Blade edges are sealed with foam gasket to avoid rattling noise and to provide air tight operation.
Blades open fully or at any angle depending on the air velocity. Blades stay in position of opening without fluctuating when there is constant air flow.
Blades close quietly when the air flow stops.
Designed to maintain constant pressure level inside pressurized rooms by relieving excess air when it exceeds the desired limit.
Generally installed on diesel generator, plant rooms ventilation system and exhaust ducting.
Available in square and rectangular sizes.
Frame has a 40 mm flange for Duct mounting.
Brass bushes and steel reinforcements are optional for heavy duty applications. (Model: ANRD-D-AL-H)
