Graco 15G234 Piston Wiper
The Graco 15G234 Piston Wiper ensures smooth piston movement and prevents leakage in 4 GPM airless pumps, extending system life and performance.
- OEM Graco component – designed for precision fit
- Reduces wear and maintains proper piston alignment
- Compatible with GH-833 and 287834 pumps
- Durable, solvent-resistant polymer construction
Compatible Machines for the 15G234 Piston Wiper
- Graco GH-833 Displacement Pump
- Graco 287834 Pump (4 GPM flow band)
- Graco ProContractor Series – 4 GPM models
Product Overview
The 15G234 Piston Wiper is a high-precision sealing and guiding component designed for the piston valve assembly of 4 GPM airless spray pumps. It ensures that the piston remains properly aligned, reduces wear on sealing surfaces, and preserves optimal fluid control under high pressure.
Key Features
| Part Number | 15G234 |
|---|---|
| Function | Piston wiper and guide for piston valve assembly in airless pump systems |
| Flow Band | 4 GPM rating |
| Construction | Durable engineered polymer or elastomer seal with precision fit features |
Materials & Performance
Manufactured with a robust polymer blend or elastomeric material, the 15G234 piston wiper is engineered to handle high-cycle operations, abrasive coatings and solvent exposure often found in commercial spray applications. It provides low-friction guidance for the piston and helps maintain sealing integrity between the piston and cylinder wall.
Installation & Maintenance
- Before installation, ensure the piston and cylinder are clean and free of debris or dried coating material.
- Lubricate lightly as per system manufacturer’s recommendations to ease assembly and prevent initial wear.
- Inspect the wiper surface for scoring, abrasion, cracks or deformation during each maintenance cycle.
- Replace this component if you notice excess piston side play, fluid bypassing the piston or unexpected pump rod vibration.
Applications
The 15G234 piston wiper is ideal for professional-grade airless coating equipment used in industrial manufacturing, automotive finishing, large-scale construction projects and abrasive or high-volume spray environments. It extends piston life, maintains consistent fluid delivery and helps ensure reliable system performance.
