Compressor tank is dented or damaged

Symptoms

• Visible dent or deformation in the tank shell
• Dent from a drop, impact, or being run over
• Possible paint cracking or bubbling at the dent
• Concern after an accident even with no visible leak

Likely causes

• CommonImpact from a drop or collisionPortable compressors get knocked around during transport and jobsite use.
• PossibleSomething heavy placed or stacked on the tankSustained weight can deform thinner tank walls over time.
• Less commonExisting corrosion weakening the metal before the impactA rusted area is more prone to denting or cracking under impact.

What to do

1. Do not pressurize or use the compressor until the dent has been assessed.
2. Examine the dent closely for any cracking, splitting, or paint bubbling at the site, which would indicate compromised metal.
3. Note the dent's depth and sharpness; a shallow, broad dent is generally less concerning than a sharp crease or a dent near a seam or fitting.
4. Do not attempt to pound out, straighten, or otherwise reshape the dent yourself, since this can further weaken the metal.
5. Have a qualified pressure vessel inspector or the manufacturer evaluate whether the tank is still safe to use.
6. If there's any crack, sharp crease, or a dent near a weld seam, retire the tank rather than risk it.
7. When in doubt, replace the tank or the compressor rather than continuing to pressurize a damaged vessel.

Tools and parts

• Flashlight for inspection

When to call a pro

A pressure vessel inspector, the manufacturer, or a compressor dealer can assess whether a dented tank is safe or should be retired.

Safety