TinnerFlow™Why is air leaking from the spiral lockseam during a pressure test
3rd YearSealing, Leakage & MasticCheck first
Do not hammer the spiral seam flat. Clean, seal, and wrap/repair it with the approved pressure-class method or replace defective pipe.
Plain-English answer
A whistle from the factory spiral lock can mean a forming defect, damaged seam, oil-contaminated seal area, or pressure-class mismatch.
Find the exact leak, clean the seam, use approved sealant/wrap for that pressure class, and replace the section if the lockseam is mechanically open or failing.
Ask Foreman
The spiral lockseam at [location] is whistling during pressure test. I located the seam leak and checked for damage. Do you want approved seam sealing or replacement of the section?
Verify before acting
Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.
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