The GRACO 564476 is a replacement rupture-to-atmosphere indicator designed for use in high-pressure lubrication systems. It is constructed for use with oil and is intended to indicate excessive pressure by rupturing and venting to atmosphere, thereby protecting equipment from overpressure damage. Its primary function is to signal and relieve pressure in GRACO lubrication equipment when system pressure exceeds safe limits.

Key Features:

• Rupture-to-Atmosphere Indicator
• 1/8 in NPTF
• Maximum working pressure: 3700 psi
• Compatible with oil-based lubrication systems
• Indicates and relieves excessive pressure by rupturing and venting to atmosphere
• Helps protect equipment from overpressure damage
• Easy to replace and reset after activation

Applications:
Used in industrial lubrication systems, particularly where high-pressure conditions may occur, such as in-plant machinery and compressor equipment. It is suitable for applications requiring reliable pressure relief and indication of system faults.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, function, and safety in high-pressure lubrication systems.
• Ensure the system is depressurized before installation or replacement
• Use appropriate tools and thread sealant for NPTF connections
• After installation, check for leaks and proper indicator function
• Replace the indicator after activation and reset as needed
• Regularly inspect indicators for signs of activation or damage
• Replace indicators immediately after activation to maintain system protection
• Follow manufacturer guidelines for maintenance and replacement intervals