Internal seal ring wear or loss within the air valve. Replacement of the seal ring is necessary to resolve this issue.

Worn or missing seal ring. Replacement of the seal ring is required to address this problem.

Internal seal ring damage or breakage. Replacement of the seal ring is necessary.

Possible Causes:1.Insufficient paint in the gun cup, requiring a refill.

Possible Causes:1.Blocked or damaged air cap vents.

Possible Causes:1.Blocked or damaged air cap vents.

Maintaining Stable and Suitable Air Pressure

1.We only provide repair services for genuine DeVILBISS original spray guns and spraying equipment. Users can verify authenticity