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Rotary Airlocks

Discharge without the pressure drop. Rotary airlocks meter dust out of your collector while holding the pressure differential your system depends on — enabling continuous waste removal without breaking vacuum.

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Rotary airlocks meter dust discharge from your collector while maintaining the pressure differential your system depends on for proper airflow. By allowing continuous waste discharge without breaking system vacuum, airlocks improve airflow stability and reduce interruptions — keeping collector performance consistent even during active waste removal.

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Holds System Pressure

Maintains pressure differential for consistent, stable system airflow.

Continuous Waste Discharge

Enables continuous waste discharge without interrupting collector performance.

More Efficient Dust Handling

Improves overall dust handling efficiency and reduces system downtime.

Products in this collection

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Legend Rotary Airlock
Rotary Airlocks

Legend Industrial Rotary Airlock

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Industrial Rotary Airlock Specs
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Rotary Airlocks

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different kinds of gates

different kinds of BUTTERFLY gates

Benefits

Leak Free?

Available in Auto

Fully Fabricated

Half Cut Off Option

Available fully in SS

Limit Switch Option

Sizes Available

Aluminum Body Cut Off

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3"-24"

Mini Leak Gate

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*across the blade

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3"-8"

Blast Gate

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*to the atmosphere

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3"-24"

Fully Fabricated Cut Off

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3"-38"

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3”-32”

Available fully in SS

Great for use high up in the air

Available w/ half moon stops and gaskets & Oil Light Bushings (adder)

Safe for systems with particles going through the duct

Locking Quadrant

Limit Switch available (adder)

Reed Switch Available (adder)

Sizes Available

MANUAL BUTTERFLY

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3"-54"

AUTO BUTTERFLY

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Green checkmark icon inside a white circle with a green outline.

3"-54"

WEIGHTED BUTTERFLY

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Green checkmark icon inside a white circle with a green outline.

3"-54"

CHAIN OPERATED BUTTERFLY

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Green checkmark icon inside a white circle with a green outline.
Green checkmark icon inside a white circle with a green outline.

3"-54"

Wondering which gate/butterfly gates fits best for your needs? Talk to your Duct guy at (336)-904-0112


RECLAIM YOUR TIME


Woodworkers and shop employees can spend 30 min/day, 2.5 hours/week, 180 hours/year JUST on changing out bags from your open baghouse waste collector. Why spend all that time and money changing out bags when you can be making more money? That's where our baghouse comes in.
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WASTE MANAGEMENT Solutions Tailored for Small TO LARGE Shops

At US Duct, we understand ALL owner's time constraints in managing a shop. Whether you run a woodshop, metal fabrication shop, or manufacturing facility, we offer high-quality, cost-effective solutions designed to fit your space, improve your workflow, and grow your business.

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Why Small Shops Choose US Duct

We’re not just a supplier, but your trusted partner for ductwork solutions that grow with your shop. Small shop owners choose US Duct because we deliver:

  • Personalized Solutions: Every duct system is tailored to your needs.

  • Fast Turnaround Times: Get your system quickly and reduce downtime.

  • Expert Advice: Our team is here to guide you every step of the way.

Products

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Products in this collection

Legend Rotary Airlock

Legend Industrial Rotary Airlock

The Legend APC Industrial Rotary Airlock is used to discharge metered dust and material while maintaining the static pressure differential inside a dust collector or cyclone. Available in multiple inlet sizes.

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Our Promise

To you

Our commitment is to your success. We believe in building lasting partnerships where your growth fuels ours. We're here to support your business with the best in ductwork solutions,helping you achieve more every step of the way.

Laughing fabrication team in the shop.

Talk to a Duct Guy or Gal

Get started on a solution tailored to your needs, or explore our range of inline separators, self-dumping hoppers, and baghouses for even more ways to optimize your workspace.

Shop products
Contact us

Talk to a Duct Guy or Gal

Get started on a solution tailored to your needs, or explore our range of inline separators, self-dumping hoppers, and bag houses for even more ways to optimize your workspace.

Find a Duct Expert
Contact us