The GRACO 564331 is a soft seat double ball check valve designed for high-pressure hydraulic or lubrication systems. It features a stainless steel (SST) body and a Viton ball, engineered to provide reliable sealing and durability in demanding industrial environments.

Key Features:

• Double Ball Check Valve
• 564331 / 1/8 in NPSF
• Stainless Steel (SST) Body, Viton Ball
• Up to 7500 psi
• Designed for use in hydraulic or lubrication systems; compatible with GRACO equipment requiring high-pressure check valves
• Soft seat design for improved sealing and reduced wear
• Double ball mechanism for enhanced reliability and leak prevention
• High-pressure tolerance for demanding applications
• Durable SST and Viton construction for long service life

Applications:
Used in hydraulic and lubrication systems where high-pressure sealing and reliable check valve operation are required. Suitable for industrial, mining, and agricultural equipment.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and compatibility with GRACO equipment, reducing the risk of leaks and equipment failure.
• Ensure the valve is installed in the correct orientation as specified in the manual
• Use appropriate tools and follow torque specifications for fittings
• Inspect seals and seating surfaces before installation
• Regularly check for wear and replace as needed to maintain system integrity
• Keep spare parts on hand to minimize downtime
• Follow manufacturer’s maintenance schedule
• Consult the equipment manual for specific installation and maintenance instructions