Radius Elbow Vanestones
Spiral, Round Duct & Couplings⚠️ VERIFYControlled condition
Core Answer
Large elbows and radius fittings may need vane support/vanestones so turning vanes stay secure and aligned.
What to Check First
- Confirm vane spacing/support
- attachment
- airflow direction
- whether vanes are required by detail.
Ask Foreman
This elbow has turning vanes/vanestones. Do we verify vane spacing and attachment before closing it up?
Do Not Do This
Do not leave unsupported loose vanes or install vanes backwards.
Why This Matters
noise, pressure drop, failed inspection, loose metal in airstream
Verify against: SMACNA, project drawings, shop standard.