Introduction
The Graco 17P712 VacuValve Cap Replacement is an essential component of the Flex Liner System for Graco Ultra Handheld airless sprayers. These caps are designed to maintain an airtight seal within the paint container, preventing air infiltration that can lead to inconsistent spray patterns and premature drying of coatings. Regular replacement of these caps ensures optimal sprayer performance and extends the life of your paint materials.
Key Features
- VacuValve Caps facilitate air purging for continuous, consistent spraying.
- Designed for replacement as existing cap seals wear out.
- Compatible with Graco Ultra Handheld corded and cordless airless sprayer models 17M359, 17M363, and 17M367.
- Supplied as a convenient 3-pack for multiple replacements.
Installation Instructions
Follow these steps to replace the VacuValve cap on your Graco Ultra Handheld airless sprayer:
- Preparation: Ensure your sprayer is depressurized and disconnected from its power source (unplugged or battery removed) before beginning any maintenance.
- Remove Old Cap: Carefully twist and pull off the existing VacuValve cap from the top of the Flex Liner System paint cup.
- Install New Cap: Take one new Graco 17P712 VacuValve Cap from the pack. Align it with the opening on the Flex Liner System paint cup and press down firmly while twisting gently until it is securely seated.
- Verify Seal: Ensure the new cap is properly seated and forms a tight seal to prevent any air from entering the system. A proper seal is crucial for optimal sprayer performance.
Operation and Function
The VacuValve caps are integral to the efficient operation of your Graco Ultra Handheld airless sprayer's Flex Liner System. Their primary function is to create and maintain a vacuum within the paint cup, which allows the sprayer to draw paint continuously without the need for thinning. This design ensures a consistent flow and spray pattern, leading to professional-quality finishes. A properly functioning VacuValve cap prevents air from mixing with the paint, which can cause sputtering, inconsistent coverage, and premature drying of the paint inside the system.
Maintenance and Care
To ensure the longevity and optimal performance of your Graco sprayer, regular maintenance of the VacuValve caps is recommended:
- Regular Inspection: Before each use, visually inspect the VacuValve caps for any signs of wear, cracks, or damage to the rubber seals. Worn seals are the most common cause of air infiltration.
- Timely Replacement: Replace the VacuValve caps as soon as any signs of wear or damage are observed. The seals naturally wear out over time with repeated use and cleaning.
- Cleaning: After each use, clean the caps thoroughly along with the rest of your sprayer components. Refer to your sprayer's instruction manual for specific cleaning procedures for the Flex Liner System. Ensure no paint residue hardens on or around the cap seals.
Troubleshooting
If you experience issues with your Graco Ultra Handheld airless sprayer, a worn or damaged VacuValve cap could be a contributing factor:
| Problem | Possible Cause | Solution |
|---|---|---|
| Inconsistent spray pattern or sputtering | Air infiltration due to worn or damaged VacuValve cap seals. | Inspect the VacuValve cap. If seals show wear or damage, replace the cap with a new Graco 17P712 VacuValve Cap. |
| Paint drying out prematurely in the Flex Liner System | Ineffective seal from the VacuValve cap allowing air exposure. | Replace the VacuValve cap to ensure an airtight seal, which helps keep coatings fresh longer within the system. |
Specifications
- Manufacturer: Graco
- Part Number: 17P712
- Item Weight: 0.16 ounces
- Product Dimensions: 1.8 x 1.65 x 1.35 inches
- Style: Cap Replacement
- Item Package Quantity: 3 (This product is sold as a 3-pack of replacement caps)
- Included Components: 3 pack VacuValve cap replacement
- Compatibility: Graco Ultra Handheld corded and cordless airless sprayer models 17M359, 17M363, 17M367
Warranty and Support
This Graco product comes with a 12-month warranty. For detailed warranty information, service, or technical support, please refer to the official Graco website or contact Graco customer service directly. Keep your purchase receipt for warranty claims.
Product Images


Official Product Videos
Video: TrueAirless: The Fastest Way To Finish Your Projects. This video demonstrates the speed and efficiency of Graco TrueAirless sprayers, which utilize the Flex Liner System and VacuValve caps for optimal performance.
Video: Why Spray Video. This video explains the benefits of using a paint sprayer for various projects, showcasing the ease of use and professional results achievable with Graco equipment.





