Pressure Relief Damper - Frame

DESCRIPTION:

• The frame and blades are made of high-quality galvanised sheets.
• Air-operated damper blades are fixed to the frame using self-lubricating metal bushes.
• Blade edges are sealed with a foam gasket to provide airtight operation.
• The blades open fully or at any angle depending on the air velocity and pressure.
• The blades close quietly when the airflow stops.
• Designed to maintain a constant pressure level inside pressurised rooms by relieving excess air when it exceeds the desired limit.
• Available in square and rectangular sizes.
• The frame has a 30 mm flange for wall or duct mounting.
• Brass bushes and steel reinforcements are available as optional features for heavy-duty applications.
• Dampers are factory-tested for the required pressure operation.