A high-velocity spiral 45-degree elbow slides off the collar
Angled round fittings can see thrust and vibration. Re-seat the joint, confirm overlap, fasten mechanically per approved standard, and seal after the connection is solid.
Do not trust tape or mastic to hold a spiral elbow that is sliding off the collar.
Check
Check collar insertion depth and overlap.
Look for stripped screw holes or loose fasteners.
Confirm pipe end is square and seated.
Add approved fasteners around the full joint, not just one side.
Seal after mechanical fastening is correct.
Steps
Check collar insertion depth and overlap.
Look for stripped screw holes or loose fasteners.
Confirm pipe end is square and seated.
Add approved fasteners around the full joint, not just one side.
Seal after mechanical fastening is correct.
Say this to your foreman
The high-velocity 45 elbow at [location] is walking off the collar. I checked overlap and fasteners. Do you want it refastened per shop standard or swapped for a deeper-collar fitting?