Graco 288065 Piston Ball Repair Kit (3Pk)

The Graco 288065 Piston Ball Repair Kit (3Pk) restores proper check-valve sealing inside the piston assembly, ensuring consistent pressure and reliable fluid flow in compatible Graco pump lowers.

Includes 3 high-precision piston balls
Prevents backflow and pressure loss
Used in Graco Xtreme and XP series pump lowers
OEM part for long service life and exact fit

$70.25

Based on 0 reviews

Description

Compatible Machines

Graco Xtreme 115cc Lower
Graco Xtreme 145cc Lower
Graco Xtreme 180cc Lower
Graco XP Series Pump Lowers

Graco 288065 Piston Ball Repair Kit (3Pk)

The Graco 288065 Piston Ball Repair Kit (3Pk) is a genuine replacement kit designed for servicing Graco piston pump lowers. It includes three precision-machined piston balls that act as critical check components inside the piston assembly, ensuring proper one-way fluid flow and maintaining consistent pressure during spraying operations.

Specification	Details
Part Number	288065
Kit Type	Piston Ball Repair Kit
Quantity	3 Balls per Kit
Application	Piston Pump Lowers
Function	Controls fluid check and sealing inside piston assembly
Material	Hardened metal for high-pressure coating applications

Key Features

Restores proper pump priming and pressure stability.
Essential for routine overhaul of Graco Xtreme and XP pump lowers.
Manufactured to exact OEM tolerances for long service life.
Prevents backflow and loss of pumping efficiency.

Frequently Asked Questions

The piston ball acts as a one-way check valve inside the piston, allowing material to flow upward during the suction stroke and sealing during the pressure stroke to build and maintain spray pressure.

Replacement is recommended when the pump loses prime, pressure fluctuates, material backflows, or during scheduled lower pump rebuilds.

No. This kit is designed specifically for Graco piston pump lowers that use this size and type of piston ball, such as Xtreme and XP series lowers.