The GRACO 556334 is a Viton ball designed for use in Lube Master® pump packages. It serves as a critical sealing and check valve component within the pump assembly, ensuring reliable operation and preventing backflow.

Key Features:

• Ball
• 0.375 in (10 mm) diameter
• Viton (80 Duro)
• Lube Master® Pumps
• High chemical resistance due to Viton material
• Durable construction for reliable sealing
• Designed for use in demanding lubrication applications

Applications:
Used in lubrication systems for industrial, mining, and agricultural equipment where reliable sealing and check valve functionality are required.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the Lube Master® pump system.
• Ensure the pump is depressurized before installation
• Inspect the ball and seat for wear or damage prior to installation
• Follow manufacturer guidelines for proper seating and alignment
• Regularly inspect the ball and seat for wear or contamination
• Replace the ball as part of routine maintenance or if performance issues arise