

High-precision 1 5/8" 440C stainless steel check ball designed for reliable sealing and consistent fluid control in Graco hydraulic pump valve systems.
| System / Equipment Type | Application Compatibility |
|---|---|
| Graco Dura-Flo Hydraulic Pump Systems | Used in high-pressure check valve assemblies for fluid control. |
| Dura-Flo XL Industrial Spray Pumps | Supports inlet and outlet valve sealing in continuous-duty operation. |
| Graco RoadLazer Line Marking Equipment | Integrated into hydraulic pump systems for controlled material flow. |
| High-Pressure Airless Spray Systems | Used in valve assemblies requiring 1 5/8" precision check balls. |
| Industrial Hydraulic Pump Platforms | Compatible with heavy-duty fluid displacement and sealing systems. |
The Graco 25V557 Ball, 1 5/8", 440C is a precision-engineered stainless steel check ball used in hydraulic pump valve assemblies. It ensures accurate sealing and controlled fluid direction within high-pressure Graco pump systems.
Manufactured from 440C stainless steel, it delivers high hardness, excellent wear resistance, and corrosion protection, making it suitable for abrasive coatings and demanding industrial environments.
It is commonly used in Graco Dura-Flo and RoadLazer systems where reliable valve performance and consistent pressure control are essential for industrial spraying and fluid transfer operations.