Compatible Machines
The Graco 16K068 Piston Valve Assembly is designed for specific Graco Xtreme and XP pump lowers. Below is the confirmed compatibility list.
- L072C0 Pump Lower – 72cc Xtreme Lower
- Xtreme / XP Pump Lowers compatible with 36cc, 48cc, 54cc, 58cc, and 72cc displacement sizes
Product Details
The 16K068 Piston Valve Assembly is a key OEM component located within the lower fluid section of Xtreme and XP displacement pumps. It regulates fluid flow during upstroke and downstroke cycles, ensuring efficient paint or coating delivery. This assembly is essential for restoring proper pump performance when experiencing reduced pressure, poor atomization, or fluid bypass.
Key Features
- OEM Graco replacement for Xtreme and XP pump lowers
- Ensures correct piston valve operation for consistent output
- Helps maintain proper pump pressure and spray pattern
- Durable internal valve design for demanding coating applications
When to Replace
- Reduced or inconsistent spray pressure
- Material leaking back into pump chamber
- Poor atomization or irregular spray pattern
- Visible wear or damage during pump lower service
Frequently Asked Questions
The piston valve controls fluid movement inside the lower pump section, enabling smooth upstroke and downstroke operation. A worn valve causes pressure loss and uneven spray performance.
Check the model number of your pump lower. If it is an L072C0 lower or an Xtreme/XP lower in the 36cc–72cc range, this piston valve assembly is compatible.
Common signs include fluctuating pressure, poor atomization, difficulty maintaining spray consistency, or internal leakage in the pump lower.
