Pressure Relief Dampers - HPR-230

Model HPR-230 industrial pressure relief damper has a double flanged channel frame and streamlined airfoil blades. The damper protects HVAC systems and industrial processes by relieving air pressure. Blade Type: Fabricated Airfoil Pressure Relief: ¼ in. wg to 4 in. wg (.06 kPa to 1 kPa) Back Pressure: 6 - 13½ in. wg (1.5 to 3.4 kPa) Velocity: Up to 5150 fpm (26.2 m/s) Temperature: -40°F to 250°F (-40°C to 121°C)