Spark Trap

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

Spark Trap spark arrestor installed in ductwork

The Spark Trap reduces the risk of fire in your industrial dust collection system. Also known as a spark arrestor or spark arrester, the Spark Trap is an NFPA recommended passive protection from fire risk.


The Spark Trap spark arrestor is a passive fire protection device. Sparks enter the Spark Trap and are slowed down by turbulence. The spark slows down and loses its heat.


The Spark Trap is the toughest and most effective spark arrestor available. Companies across the world rely on the Imperial Systems Spark Trap for their dust collection systems. Here’s why:

  • With no moving parts, the Spark Trap is very low maintenance
  • A clean-out door allows easy access to empty any accumulated material
  • The Spark Trap is the most heavy-duty and durable spark arrestor available
  • With fully welded construction, there’s no risk of leaks

Added benefits of the Spark Trap spark arrestor:

  • Easy to install in any system, in horizontal or vertical configuration
  • Standard sizes 6” to 40” with other sizes to meet your needs
  • Options for raw, flanged, or quick connect ends
Another photo of the Spark Trap spark arrestor installed in ductwork


NFPA recommends a spark arrestor as part of a complete fire prevention system. A spark arrestor is a vital protection device.

It’s important to understand that NO spark arrestor, even the Spark Trap can guarantee 100% spark control. Consult with your dust collector system designer to make sure your system is safe from fire and explosion hazards.

Click the brochure to download and learn more!

spark arrestor function diagram

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 arrestor 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 the 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 arrestors 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.

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