

Precision-engineered piston guide that stabilizes piston movement inside Graco SST pump assemblies, helping maintain consistent pressure and smooth spray performance.
| Machine Category | Compatibility Notes |
|---|---|
| Graco Airless Paint Sprayers | Used in select models utilizing SST pump assemblies with a 2 cm piston configuration. |
| Professional Contractor Series | Compatible with certain high-pressure units depending on pump design and revision. |
| Industrial Sprayer Systems | Applicable in heavy-duty Graco systems where OEM part number 15K690 is specified. |
| Replacement Pump Assemblies | Fits within compatible piston/guide assemblies requiring SST material construction. |
Note: Always verify compatibility using the official Graco parts breakdown for your exact sprayer model before purchasing.
The Graco 15K690 Guide is a precision-engineered internal pump component designed to support and stabilize the piston movement inside Graco airless spray pump assemblies. It plays a critical role in ensuring smooth operation, reduced friction, and consistent spray performance.
Manufactured using SST (stainless steel) materials, this Piston guide offers high durability, corrosion resistance, and long service life even under high-pressure spraying conditions. The 2 Cm specification refers to its dimensional configuration, ensuring proper fit within compatible Graco pump systems.
This component is typically used in professional-grade airless paint sprayers where precision fluid control and pump reliability are essential for consistent coating application.