The GRACO 186691 GUIDE BALL is a small, precision-engineered component made from acetal, a durable engineering plastic. It is designed to function as a guide or check valve element within various GRACO pump assemblies, ensuring smooth operation and reliable sealing in fluid handling systems.

Key Features:

• Guide Ball
• Acetal (engineering plastic)
• Designed for use in GRACO pump assemblies; specific models not always listed, but may be used in kits for models like Husky 3300 (see related kits for reference)
• High durability and chemical resistance due to acetal material
• Precision fit for reliable sealing and smooth operation
• Lightweight (approx. 0.025–0.10 lbs)
• Compact dimensions (approx. 1.05 x 1.2 x 1.15 inches)

Applications:
Used as a guide or check valve component in GRACO fluid handling and pump systems, particularly in lubrication, spray foam, and other industrial applications where reliable sealing and smooth operation are required.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, compatibility, and longevity of equipment. Non-genuine parts may compromise system reliability and safety.
• Ensure the pump is depressurized and isolated before installation
• Clean the seating area thoroughly to prevent contamination
• Inspect the guide ball and seat for wear or damage before installation
• Follow manufacturer-recommended torque and alignment procedures
• Regularly inspect guide balls and seats for wear or damage
• Replace guide balls as part of routine maintenance or when performance issues arise
• Use only compatible replacement parts to maintain system integrity