The GRACO 557435 is a replacement rupture disk designed for use as a pressure safety device within GRACO lubrication systems. It is typically constructed from engineered materials suitable for high-pressure applications, though the specific material is not specified. Its primary function is to act as a rupture-to-atmosphere indicator, providing a visual warning of system overpressure and protecting equipment from damage.

Key Features:

• Rupture Disk
• 11/16 in (0.688 in overall diameter, 17 mm)
• Maximum working pressure: 2050 psi (141 bar, 14125 kPa)
• For use with MJ, MSP, MHH, and MXP Divider Valves
• Orange color for easy identification
• Provides visual indication of system overpressure
• Designed for reliable performance in high-pressure lubrication systems

Applications:
Used as a rupture-to-atmosphere indicator in GRACO lubrication systems, specifically with MJ, MSP, MHH, and MXP Divider Valves. Helps protect equipment by indicating blocked lines, high system pressure, or blocked bearings.

Installation Notes:

• Using genuine GRACO replacement parts ensures compatibility, reliability, and maintains system safety and performance.
• Replace the rupture disk if it has ruptured to restore system operation
• Ensure correct orientation and secure fit during installation
• Inspect for proper seating and absence of leaks after installation
• Regularly inspect rupture disks for signs of wear or damage
• Replace disks immediately if ruptured or compromised
• Follow manufacturer guidelines for installation and maintenance