Blast Gates

A blast gate is a sliding valve installed at each branch of a shop dust collection duct network. Opening the gate for the machine in use and closing all others concentrates the collector's full suction at one point, dramatically improving dust pickup efficiency.

Most full-size stationary tools — table saws, planers, and jointers — use 4-inch dust ports. The 4 inch Blast Gate or the heavier-duty 4 inch Aluminum Blast Gate are the right choice for these applications. Smaller tools like routers and sanders typically use 2-1/2 inch ports.

The standard 4 inch Blast Gate is a cost-effective plastic model suitable for most shop environments. The 4 inch Aluminum Blast Gate is a heavier-duty option that resists cracking in cold workshops and holds up longer under frequent use.

The 4 inch Thread Blast Gate and 4 inch Dual Thread Blast Gate feature threaded inlet and outlet connections that screw directly onto threaded duct fittings or tool ports, creating a more secure and airtight seal than a friction-fit connection.

The Blast Gate Holder mounts blast gates at a fixed position on a wall or duct run so they are always within easy reach. This is especially useful in cramped shops where loose gates can end up buried behind tools or materials.

Yes, but shop vacuums typically use smaller 1-1/4 inch or 2-1/2 inch hose connections. The 2-1/2 inch Blast Gate is the right size for shop vac hose connections, and combining it with a Quick Snap Dust Collection Kit lets you build a multi-tool network around a single vacuum.

You need one blast gate per branch in your duct network — one for each stationary machine and one for any portable tool drop. A typical small shop might have three to six gates, while a larger production shop can have a dozen or more. Having a gate at every branch ensures you can always isolate the active tool.

Infinity Tools blast gates are sized to fit standard dust collection duct dimensions. The 4-inch gates fit standard 4-inch duct and fittings; the 2-1/2-inch gates fit standard 2-1/2-inch hose. If you are unsure about compatibility, reach out through the contact page.

Shipping timelines and methods are outlined on the Shipping Policies page. Blast gates are compact and typically ship promptly from inventory.

If you only have one machine and one straight run to your collector, a single gate is not strictly necessary. However, as soon as you add a second branch — even for a shop vacuum or a portable tool — blast gates prevent suction loss through the inactive branch and ensure efficient pickup at the machine you are using.