Description
The GRACO AST421 AIRLESSCO TIP, also known as the 421ST REV-TIP with SEAL, is a reversible airless spray gun tip designed for use with GRACO airless spray equipment. It is constructed for durability and is intended to provide a consistent spray pattern for various coatings. The tip is engineered to be easily cleared of clogs and is suitable for professional painting and coating applications.
Key Features:
- Airless Spray Gun Tip
- AST421 / 421ST REV-TIP, SEAL (exact model may vary; closest available is RAC X LP SwitchTip 421 or XHD421, but not AST421)
- Reversible tip for easy clog clearing
- Designed for quick tip changes without removing tip guard and housing (for SwitchTip models)
- Engineered for consistent spray pattern and finish
Applications:
Professional painting, coating, and finishing applications. Suitable for use with a wide range of coatings, including paints and high-solids materials (for XHD421; for AST421, not specified).
Installation Notes:
- Using genuine GRACO parts ensures optimal performance, safety, and longevity of your spray equipment.
- Ensure the spray gun is depressurized before installing or removing the tip
- Align the tip correctly with the spray gun and tip guard
- Use the reversible feature to clear clogs by rotating the tip 180 degrees
- Regularly inspect the tip for wear and replace as needed






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