Static field route #19590

What do I do when an adjustable 45-degree elbow gets crimped and frozen?

Spiral, Round & Oval Duct Install✅ LEARN / STANDARD FIXField answer expansion

📖 Verified core answer

Adjustable gores should rotate smoothly. If the seams are crimped, loosen and reset the gores before locking the angle, or replace the damaged fitting if it cannot hold shape.

Open in Field Rescue Open category

Field verification checklist

Check whether the gore seams still rotate smoothly.
Look for ovalized throat, crushed seams, or sharp internal lips.
Reset the angle with a level or angle finder.
Lock the gores only after the fitting holds shape.
Seal the seams after the fitting is mechanically correct.

Ask foreman

The adjustable 45 at [location] got crimped while setting the gores and the throat is losing shape. I can reset it if it opens cleanly, or replace it if the seam is damaged. Which way do you want it handled?

Text to foreman

Route options

A Correct it only if the fix is within your assignment and approved method.

B Hold and document if it affects pressure class, listed assembly, material spec, support load path, fire barrier, equipment, TAB, or another trade.

C Bring the foreman/detailer the location, what you checked, and what decision you need before sealing, testing, cover, or startup.

Do not do this

Do not crush adjustable gore seams so tight that the elbow loses diameter or freezes out of shape.

Why this matters

A distorted elbow restricts airflow, leaks at the seams, and makes the downstream run harder to align.

Final verification

Use this as field training guidance. Final direction still comes from the foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, pressure/material schedule, and AHJ/code requirements.

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