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The GRACO 557426 is a replacement rupture disk made of aluminum, designed for use as a safety device in lubrication systems. It functions as a rupture-to-atmosphere indicator, protecting equipment by releasing pressure when system pressure exceeds the rated threshold.
Key Features:
Rupture Disk
3/8 in
Aluminum
Maximum working pressure: 2350 psi (with tolerance ±500 psi)
For use with MJ, MSP, MHH, and MXP divider valves
Ease of replacement
Reliable pressure relief
Designed for use in high-pressure lubrication systems
Applications: Used in lubrication systems where pressure monitoring and safety are critical, especially in industrial and heavy equipment applications.
Installation Notes:
Using genuine GRACO parts ensures proper fit, function, and safety in high-pressure systems.
Ensure system is depressurized before installation
Follow manufacturer guidelines for installation and replacement
Regularly inspect for signs of wear or damage
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