

The Graco 16C645 Tube Drain is an OEM replacement drain tube used for proper fluid removal and maintenance in Graco spray systems. Ideal for keeping the sprayer’s suction and drainage path clear.
This Graco 16C645 Tube Drain is used across multiple Graco spray systems where a drain line or suction-side drain tube is required. Always confirm with your machine’s parts manual before ordering.
The 16C645 Tube Drain is a genuine Graco OEM component designed to maintain proper drainage within the sprayer’s suction or fluid management system. It helps remove leftover paint, cleaning solvent, or residue, ensuring smoother operation and easier maintenance during and after spraying.
| Part Number | Description | Key Function | Material Use |
|---|---|---|---|
| 16C645 | Tube Drain | Maintains system drainage and prevents residue buildup | Airless paint sprayers & fluid-handling systems |
A clean and functional drain tube helps prevent clogging, loss of suction, pressure fluctuations, and paint contamination. Replacing a worn or damaged tube keeps your machine running efficiently and reduces maintenance downtime.
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