Overview
Versatility and consistent performance in air intake or pressure relief application with durable construction and smooth operation GI frame (option with Aluminum frame is also available), and aerodynamic Aluminum blade design for quiet and long-lasting performance.
Suitable for most light to medium-duty commercial and light-duty industrial requirements.
Heavy duty industrial backdraft damper /Non-return damper/pressure relief features a double flanged galvanized steel frame and double thickness fabricated airfoil blades /3V or 5V Groove blade. External heavy duty linkage, blade counterbalance and ball bearings all are standard.
- Pressure: Up to 20 in. wg
- Velocity: Up to 6400 fpm
- Temperature: -40°F to 250°F
- Leakage class I & II
- Complaince with AMCA 511-10
- Tested to ASTM E 283
Features
- Ultra-Low Leakage
- High Performance and Strength
- Compatible with Duct flange
- connections or slip driven (S and C) connections
- Axles are bolted to each blade end in order to ensure no slip
- Concealed maintenance-free and heavy duty blade linkage.