Graco 189438 Guide, Piston
OEM piston guide designed for Graco Dura-Flo 1800 lower assemblies, helping maintain proper piston alignment and smooth pump operation under high-pressure conditions.
- Genuine Graco part number 189438
- Compatible with Dura-Flo 1800 pump systems
- Designed for select 290 cc lower units
- Supports accurate piston movement and reduced wear
- Precision-machined for reliable fit and performance
Piston Alignment & Lower Pump Compatibility
Compatible Machines
| Compatible Equipment | Series / Type |
|---|---|
| Graco Dura-Flo 1800 | 290 cc Lower Units |
| Lower Part No. 222801 | Dura-Flo 1800 |
| Lower Part No. 222802 | Dura-Flo 1800 |
| Lower Part No. 222803 | Dura-Flo 1800 |
| Lower Part No. 222804 | Dura-Flo 1800 |
| Lower Part No. 222805 | Dura-Flo 1800 |
| Lower Part No. 222806 | Dura-Flo 1800 |
What Is the Graco 189438 Guide, Piston?
The Graco 189438 Guide, Piston is a genuine OEM replacement component designed for use in Graco Dura-Flo 1800 lower pump assemblies. This precision-engineered guide helps maintain correct piston alignment and smooth movement during pump operation.
By supporting accurate piston travel within the lower assembly, the guide contributes to consistent fluid pressure, reduced component wear, and dependable pump performance in demanding industrial spraying and fluid transfer applications.
Manufactured to original Graco specifications, the component ensures reliable fitment and compatibility with multiple 290 cc lower units commonly used in high-pressure coating systems.
Key Features
- Genuine Graco OEM piston guide component
- Designed for Dura-Flo 1800 lower assemblies
- Helps maintain proper piston alignment
- Supports smooth pump cycling and fluid control
- Compatible with multiple 290 cc lower units
- Precision-machined for durability and reliable performance
Frequently Asked Questions
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