Blow back damper is used on the inlet of hazardous dust collector. They ensure no re-entrainment occurs when the blower is off. It also ensure there is a seal, if a fire occurs, stopping the smoke from returning to the shop via the ductwork. Blow back damper is constructed of heavy-duty metal and custom sizes are available.
- Added safety, seal, in case of a fire
- Prevents any re-entrainment when the dust collector is inactive
- Low capital investment and maintenance costs
- Ease of inspection even while in operation
- Helps conforming to NFPA standards
How Blow Back Damper Work
- The hinged door swings open under vacuum to let the air and the particles into the dust collector’s inlet.
- When the blower is turned off, the door of the blow back damper drops down and closes itself via gravity, ensuring that no re-entrainment occurs.
- The valve of the blow back damper also acts as a seal in case of a fire, preventing the smoke from going back to the shop.
Dimensions and Specifications
- Models range from 6” to 42”
- Depending upon the model, the width, depth and height will vary
- Weight will also vary depending on the model
Applications
- All non oxidized dust particles applications
- 12 gauge steel construction
- Standard sizes from 6'' to 42''
- Flange bearings
- Cover type access door
- Inlet and outlet boltable ring
- Companion flanges
- Anti-abrasion hinged plate
