The GRACO 557434 Replacement Rupture Disk is a safety component designed to protect GRACO lubrication and fluid handling equipment from overpressure. It is typically made from a durable material (exact material not specified in available sources) and is intended to rupture at a set pressure, thereby preventing damage to the system.

Key Features:

• Rupture Disk
• 11/16 inch (0.688 inch overall diameter)
• Maximum working pressure: 1750 psi (121 bar, 12058 kPa, 12.06 MPa)
• Designed for use with GRACO lubrication and fluid handling systems where overpressure protection is required
• Red color for easy identification
• Reliable overpressure protection
• Quick replacement for minimal downtime

Applications:
Used in GRACO lubrication systems, particularly in applications where system pressures may exceed safe operating limits, such as in mining, agriculture, and industrial maintenance environments.

Installation Notes:

• Using genuine GRACO rupture disks ensures proper fit, reliable performance, and maintains system safety and warranty compliance.
• Always replace rupture disks with the correct pressure rating and size for your equipment.
• Inspect the disk and seating area for debris or damage before installation.
• Follow manufacturer guidelines for installation and torque specifications.
• Regularly check and replace rupture disks as part of routine maintenance to ensure continued system protection.