Graco Fluid Section 224808 Piston Valve

The piston valve sits in the fluid section on top of the ball cage with the displacement rod, nut, and packing's. This will often sit inside of the intake housing or on top of the packing nut.

Replacement part for use with these airless paint sprayers:

• 231553 - 390 Duron
• 231201 - 390 ST
• 231353 - 390 STS
• 820158 - Nova SP
• 820226 - Nova SPX (Old Version)
• 231344 - Pro301 STS
• 231299 - Pro 501ST