Description
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






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