The GRACO 578002 Kit, Piston Assembly is a replacement part designed for use in GRACO automatic airless spray guns. It is typically constructed from durable materials suitable for high-pressure fluid handling. Its primary function is to ensure reliable piston movement within the spray gun, maintaining consistent spray performance and preventing leaks.

Key Features:

• Piston Assembly Kit
• GRACO Automatic Airless Spray Gun Model 26C625
• Designed for easy replacement and maintenance
• Ensures reliable operation and consistent spray performance
• Helps prevent leaks and maintain system integrity

Applications:
Used in automatic airless spray guns for painting and coating applications, particularly in industrial and commercial settings.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment.
• Refer to the specific spray gun manual for detailed installation instructions
• Ensure all o-rings and gaskets are properly seated during assembly
• Do not immerse the piston in solvent; replace o-rings if swollen or damaged
• Lubricate threads as recommended in the manual
• Hand tighten the cap until it engages the gasket, then tighten a half turn more for secure fit (for models 26C625 and 288554)