Description
The GRACO CST421 is a composite spray tip designed for use with GRACO RS chop guns in fiberglass reinforced plastic (FRP) applications. It is engineered to deliver precise spray patterns for polyester resin and gel-coat materials, ensuring efficient and consistent application in composite manufacturing.
Key Features:
- Composite Spray Tip
- CST421
- GRACO RS Chop Guns, FRP systems, polyester resin, gel-coat
- Engineered for durability and long service life
- Designed for easy maintenance and quick replacement
- Optimized for consistent spray pattern and ratio stability
- Industry-proven GRACO components
Applications:
Used in fiberglass reinforced plastic (FRP) manufacturing for spraying polyester resin and gel-coat materials, suitable for both internal and external mix chop gun systems.
Installation Notes:
- Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment. Non-genuine parts may compromise spray quality and system reliability.
- Ensure the system is depressurized before replacing the tip
- Follow GRACOs recommended maintenance schedule for spray tips
- Inspect tip for wear or damage regularly
- Use only compatible GRACO RS chop guns and FRP systems
- Clean the tip thoroughly after each use to prevent clogging
- Store tips in a clean, dry environment
- Replace tips as recommended by GRACO or when spray quality degrades






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