The GRACO 558998 is an industrial relief valve designed to regulate and relieve pressure within GRACO equipment. Its material is not specified in available sources, but it is intended for use in high-pressure industrial applications, particularly on-road vehicles and spray foam systems, to ensure safe operation by preventing overpressure conditions.

Key Features:

• Relief Valve
• 2200 PSI
• On-road vehicles, spray foam systems, and other industrial equipment
• Designed for industrial environments
• Reliable pressure relief function
• Compact and lightweight (0.185 lbs, 0.9 x 3.05 x 6.95 in)

Applications:
Used in industrial equipment such as spray foam systems and on-road vehicles to prevent overpressure and ensure safe operation.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and compatibility with GRACO equipment.
• Ensure the valve is installed in the correct orientation as per equipment manual
• Check for leaks and proper seating after installation
• Regularly inspect for wear and replace as needed
• Periodically test the relief function
• Keep the valve clean and free from debris
• Replace if signs of damage or malfunction are observed