Graco CAT-66DX Valve Repair Kit – Product Overview
The Graco 4109 Valve Repair Kit is specifically engineered for maintaining CAT-66DX pumps. It replaces worn internal valve components to restore proper function and ensure reliable pump performance.
Compatible Machines
This kit fits Graco sprayers using the CAT-66DX pump:
- Graco model 24U 845 – CAT-66DX direct-drive sprayer
- Graco model 24U 846 – CAT-66DX high-performance variant
Key Features
- OEM Valve Components: Genuine Graco parts maintain proper pump tolerances.
- Complete Repair Kit: Includes all necessary valve seals, seats, and components.
- Reliable Operation: Restores proper pump flow and prevents leaks.
- Durable Performance: Designed for high-pressure applications and long service life.
Installation & Service Tips
For best results, follow these guidelines when installing the CAT-66DX valve kit:
- Depressurize the pump before disassembly to ensure safety.
- Remove all old valve components and clean the valve cavity thoroughly.
- Install new components according to Graco service instructions, ensuring correct orientation.
- Inspect the assembly for smooth movement and proper sealing.
- Test the pump at low pressure before returning to full operation.
Why Choose This Kit?
Using the Graco 4109 Valve Repair Kit ensures your CAT-66DX pump operates reliably, maintains proper flow, and avoids costly downtime. OEM parts preserve original performance and extend pump life.
Frequently Asked Questions
The kit includes all valve components such as seals, seats, springs, and other internal parts necessary to service the CAT-66DX pump.
This kit is compatible with Graco sprayers equipped with the CAT-66DX pump, including models 24U 845 and 24U 846.
Replacement depends on pump usage and fluid type. Signs to replace include leaks, reduced flow, or difficulty in maintaining proper pump pressure.
No. The 4109 Valve Repair Kit is specifically designed for CAT-66DX pumps and is not compatible with other Graco pump types.
