High Temperature Damper History

A history of high temperature damper manufacturing

Whilst other damper manufacturers avoid projects involving extreme conditions, DTL have been manufacturing products specially designed for high temperatures for decades.

Today we’re sharing this throwback example of dampers supplied in the early noughties. Designed for extreme temperature service conditions, and tested in house at 1000 degrees C.

Even a slight propane leak didn’t trouble the damper, which operated throughout the test and apart from a few heat related marks was passed off and despatched to the customer (once it had eventually cooled down).

high temperature damper testing by DTL
If you need a damper for an extreme service application, you know who to call.

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How do we typically hot test our dampers?
  1. Propane Burner Setup: A propane burner designed for industrial applications is used. This could be a single burner head or a multi-burner assembly depending on the size and heating requirements of the steel component.
  2. Propane Supply: Propane is typically supplied from pressurized tanks or larger bulk containers. The gas pressure is regulated to ensure proper delivery to the burner head.
  3. Insulate: The damper flanges are blanked off and covered with insulating material to aid heat retention.
  4. Heating the Damper: The propane burner is inserted in the duct void, and the flame heats the damper to the desired test temperature. In some cases, a sand bed burner might be used. This utilizes propane gas to heat a sand bed, which then radiates heat towards the damper, providing a more uniform thermal exposure.
  5. Temperature Monitoring: Throughout the hot testing process, the temperature of the damper is constantly monitored using temperature sensors or probes. This ensures the test stays within the desired temperature range.
  6. Operate: The high temperature damper is carefully operated numerous times to ensure that it has maintained it’s structure, and that the heat has not affected any of the running clearances.