Spark Trap

The Spark Trap by Imperial Systems is a spark arrestor that extinguishes nearly all sparks before they enter your industrial dust collector. 

The Spark Trap by Imperial Systems is a spark arrestor that extinguishes nearly all sparks before they enter your industrial dust collector.


What is a spark arrestor? It’s a way to reduce the risk of a fire in your dust collection system. Our Spark Trap is simple and low maintenance with no moving parts. It works by creating turbulence in the airflow through the duct. A spark that enters the Spark Trap will be slowed down and bounced around until it loses its heat and goes out.
spark arrestor function diagram

The Spark Trap by Imperial Systems extinguishes nearly all sparks before they enter your industrial dust collector.


  • Heavy duty construction
  • No maintenance
  • Clean-out door
  • Fully welded construction
  • Easily install into any system
  • Can be installed in horizontal or vertical configurations
  • No moving parts
  • Carbon steel or stainless steel available
  • No water required
  • Available in sizes: 6in. to 40in.

Optional Features

  • Raw inlet & outlet edges
  • Rolled angle flange for bolt together duct
  • Clamp together for clamping duct


A spark arrestor is an NFPA recommended part of a complete fire and explosion prevention system. The NFPA and OSHA recommend devices like the Spark Trap as part of safe combustible dust management. No spark arrestor can guarantee 100% prevention, but the Spark Trap dramatically lowers the chances of a spark getting through.
To achieve full compliance with OSHA regulations and NFPA recommendations, a dust collection system needs to be fully equipped for the possibility of a fire or explosion inside the collector. To help make sure no potential ignition source gets to that collector, a spark arrestor is a vital protection device.

Click the brochure to download and learn more!

Frequently Asked Questions

How does the spark trap work?

Our Spark Traps have impingement plates that cause turbulence and direct sparks and embers toward the walls of the spark trap, which knocks them around and causes them to lose heat.

Why do I need a spark trap?

If there’s a danger that a spark could travel through your ductwork and ignite combustible dust or other materials, a Spark Trap may be an important part of your fire prevention system.  Learn more about the risk of not having a spark arrestor in this blog post. If you need to know whether a Spark Trap will work for your application, contact us and we’ll help you find out.

What size spark trap do I need?

This depends on the size of your ductwork. We manufacture to fit almost all diameters. Our standard sizes are 6 inches to 40 inches but larger ones are available.

How do I connect the spark trap to my ductwork?

To make it easy to install your Spark Trap, you can choose from three end types. We manufacture them with a raw end, a flanged end, and a quick connect end for clamping. Larger models can be heavy and may need hangers or other support.

Where in the ductwork does a spark trap go?

A Spark Trap can be installed vertically or horizontally. For proper functioning of the Spark Trap, the length of duct between the spark source and the Spark Trap should be at least one duct diameter, and between the Spark Trap and the dust collector should be at least ten times the duct diameter. A shorter distance will prevent the Spark Trap from working correctly and is not recommended. If you have a question about the length of ductwork, we suggest that you contact us for assistance.

What kind of maintenance does a spark trap need?

Our Spark Trap comes with a drop-down cleanout door that removes easily. This allows you to clean out debris and dust. There are no moving parts that need to be maintained.

Can a spark trap be used for high temperature applications?

If the temperature of air going through the Spark Trap will be higher than 200 degrees F, please contact us with details. There are options for higher temperature applications.

Does a spark trap work for every application?

There are some applications where Spark Traps will not be able to function properly. They do not usually work well for applications with wood chips or sawdust, or applications with sticky or fibrous material. We can help you determine whether a Spark Trap will work in your system.

Is your spark trap guaranteed to stop all sparks?

Another one of our most frequently asked questions. No spark arrestor (a.k.a. spark arrester or spark resistor) is guaranteed to stop all sparks. A flat spark arrestor screen is one of the least effective methods of reducing sparks. Our design is as effective as a spark arrestor can be. The Spark Trap is an important part of a fire prevention system, but it should not be the only part. Our model meets all NFPA standards. We will take the time to help you decide what equipment will best meet your needs.

Fill out the form below to access the product literature & downloads.