

The Graco 100400 Ball, Metallic is a precision check-valve component used in select Graco pump systems to ensure proper fluid control and prevent backflow.
A genuine Graco metallic check ball used inside specific pump/check-valve assemblies. Selecting the correct ball is essential for proper sealing, prime/hold-pressure, and overall pump performance.
The 100400 Ball (Metallic) acts as a precision check ball in the pump’s fluid section. When properly seated, it helps prevent backflow, maintains prime, and supports consistent output and pressure stability.
| Part Number | 100400 |
|---|---|
| Description | Ball, Metallic (check-valve ball for select Graco pumps) |
| Typical Use | Check-valve function in fluid section to control flow and hold pressure |
| Material | Metallic (steel) |
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