Graco 16D464 Piston Valve Assembly – OEM Replacement Part
Compatible Machines
- Graco Xtreme Series Pump Lowers (85cc, 115cc, 145cc, 180cc, 220cc, 250cc, 290cc)
- Graco XP Series Pump Lowers (36cc–115cc models)
- Graco XP Series Pump Lowers (145cc–290cc models)
- Any sprayer using Xtreme / XP fluid pump lowers that include the 16D464 piston valve assembly
Product Details
The Graco 16D464 Piston Valve Assembly is a genuine OEM replacement part used inside the fluid section of heavy-duty Graco Xtreme and XP pump lowers. It maintains proper sealing, fluid direction, and pressurization during every pump cycle, ensuring steady performance and preventing internal bypass or pressure loss.
| Part Number | 16D464 |
| Part Type | Piston Valve Assembly |
| Used In | Graco Xtreme & XP Fluid Pump Lowers |
| Function | Controls fluid flow and sealing during pump piston movement |
Why Use This OEM Piston Valve Assembly?
- Ensures correct internal pump sealing
- Restores proper pressure and spray consistency
- Prevents premature pump wear or fluid bypass
- Exact fit for Xtreme / XP pump lowers
Frequently Asked Questions
It regulates fluid movement inside the pump lower, ensuring proper sealing and pressure during each piston stroke.
Check your machine’s pump lower model. If it uses an Xtreme or XP lower that lists part 16D464, it will be a direct fit.
Yes, this is a genuine Graco OEM piston valve assembly designed specifically for Xtreme and XP pump lowers.
