The GRACO 557931 is a 3-way solenoid valve assembly made of brass, designed for use with air in GRACO lubrication systems. It is intended for controlling air flow in automated lubrication controllers for on-road vehicles and off-road equipment.

Key Features:

• Solenoid Valve
• Grease Jockey Electric Valve, 3-Way, 24 VDC
• Brass
• Air
• Reliable solenoid actuation for precise air flow control
• Compact design (2.2 in height, 5.9 in length, 4.2 in width)
• Low power consumption (7 W)
• Suitable for automated lubrication systems

Applications:
On-road vehicles, off-road equipment, automated lubrication controllers

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the lubrication system.
• Ensure power supply matches the valve’s voltage rating (24 VDC)
• Verify port size compatibility (0.046875 in / 1.191 mm)
• Follow manufacturer’s wiring and plumbing guidelines
• Regularly inspect for leaks and proper operation
• Periodically check for air leaks and electrical connections
• Clean valve and surrounding area to prevent contamination
• Replace if signs of wear or malfunction are detected