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Non-Return Damper

Gravity or spring-operated back-draft dampers to prevent reverse airflow.

Non-Return Damper
Dampers

Dampers · DMP-003

Non-Return Damper

  • QCS Compliant
  • SMACNA Standard
  • Prevents reverse airflow — gravity or spring-assisted closure
  • Lightweight aluminium blades for fast response
  • Suitable for exhaust fans, heat recovery, and AHU bypass
  • Low opening resistance — minimal pressure drop when open
  • Available: horizontal, vertical, or inclined installation
  • Galvanized steel frame with airtight blade seals
  • Sizes from 150mm × 150mm to 900mm × 600mm
  • Optional stainless steel for humid or corrosive installations

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