In-Duct Adjustable Valve with Silencer

The in-duct adjustable valve with silencer is a combined component designed for installation in round ventilation ducts directly upstream of air terminal devices (anemostats or diffusers). This element simultaneously provides aerodynamic balancing of the airflow and effectively attenuates acoustic noise generated by the ventilation equipment and the air stream.

Design and Operational Features

The product is manufactured from flexible, sound-absorbing polyurethane. The physical properties of the material ensure a tight fit inside the duct. The central part of the valve features removable segments, allowing for precise adjustment of the cross-sectional area to set the required air volume.

• Combined Functionality: The component serves as both a mechanical volume control damper and a duct silencer, optimizing the layout of the ventilation network nodes in space-constrained areas.
• Cascade Mounting: To achieve a higher class of noise attenuation in rooms with stringent acoustic requirements (bedrooms, studios), the design allows for the sequential installation of multiple valves within a single duct.
• Simplified Installation: The flexible body allows the element to be inserted into the duct manually without additional fasteners, glue, or clamps, ensuring reliable operation in concealed structures (e.g., behind suspended ceilings).

Technical Specifications