Features: AV-PRD counterbalanced pressure relief dampers are used to maintain the design pressure in the duct by releasing the excess pressure by regulating the damper.
The dampers can be installed in rectangular or circular ducts vertically. Opening pressure can easily be set by adjusting weight of each damper/ installation. Weights are included in the delivery. Pressure relief dampers can be supplied with non-standard dimensions on request.
Maximum Velocity: 2000 FPM
Maximum Differential Pressure: 1.0 kPa (4” WG)
STANDARD CONSTRCUTION:
Frame
1.2 mm thick Galvanized Steel (Also Available in
0.8mm to 1.6mm)
Blades:
0.9 mm Thick Extruded Aluminium section
Blade Seal:
Polyester Foam
Bearing:
Nylon Bush
Axle/Spindle:
8mm Galvanized Steel
Connection:
Flange
Spigot
Linkage:
GALVANIZED STEEL
Counterweights:
ADJUSTABLE COUNTERWEIGHTS (ADJUSTS 5-15
Pa)
Minimum Size:
Vertical: 4” (W) x 4” (H)
Horizontal: 4” (W) x 4” (H)
Maximum Single Section
Vertical: 48” (W) x 48” (H)
Horizontal: 48” (W) x 48” (H)
Optional construction
