Manual Blast Gates

In a dust collection system, blast gates are installed at branch duct connections. When a machine is in use, its corresponding blast gate is opened to allow airflow and suction. Unused branches are closed to concentrate the collector's suction power where it is needed most, optimizing overall system performance.

Duct Incorporated offers slide gates in standard sizes to accommodate a wide range of duct diameters commonly used in industrial ventilation and dust collection systems. Contact our team for a full size chart or to discuss custom sizing requirements for your specific application.

Manual blast gates are typically constructed from galvanized steel, aluminum, or PVC depending on the application environment. Steel gates are suited for heavy-duty industrial use, aluminum for corrosion resistance, and PVC for lighter-duty or chemical-resistant applications. Duct Incorporated can advise on the best material for your system.

Material selection is critical for high-temperature applications. Steel blast gates are generally suitable for elevated temperatures, while PVC versions are not recommended for hot airstreams. Always verify the temperature rating of the gate material against your system's operating conditions. Duct Incorporated's technical team can help you select an appropriate option.

Manual blast gates are installed inline within a duct run, typically at branch takeoffs. They are secured using slip-fit connections, flanges, or sheet metal screws depending on the gate style. Ensure the gate handle is accessible for operation. Refer to the product's installation guide or contact Duct Incorporated's technical support for guidance.

A blast gate, or slide gate, uses a flat sliding plate to fully open or close airflow and is primarily used in dust collection systems for zone isolation. A damper, by contrast, typically uses a rotating blade or louver to modulate airflow and is more common in HVAC and general ventilation systems where partial flow control is needed.