The GRACO 521850 is a check valve designed for use in high-pressure fluid handling systems. It is constructed from steel and is intended to prevent backflow in Uni-Drum Supply Systems, Tandem Supply Systems, and Ram-Mounted Pumps, ensuring reliable and safe operation of GRACO equipment.

Key Features:

• Check Valve
• 1-1/4 in. NPT
• Steel
• Maximum working pressure: 34.5 MPa (5000 psi)
• Uni-Drum Supply Systems, Tandem Supply Systems, Ram-Mounted Pumps
• Robust steel construction for durability
• Designed for high-pressure applications
• Reliable backflow prevention
• Ease of maintenance (as typical for check valves)

Applications:
Used in industrial fluid handling systems where backflow prevention is critical, such as in lubrication, paint, and chemical transfer applications with GRACO supply and pump systems.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and maintains equipment warranty and safety standards.
• Ensure proper alignment and secure tightening of NPT threads
• Inspect valve for debris before installation
• Follow GRACO equipment manual for specific installation procedures
• Regularly check for leaks and wear as part of routine maintenance