Graco 15J546 Lower Disk Valve

Graco 15J546 Lower Valve Disk – Product Overview

The Graco 15J546 Lower Valve Disk is a critical sealing component in the valve assembly that helps regulate material flow and prevents fluid back‑leak. Manufactured to precise tolerances, it ensures smooth, consistent sprayer performance.

Replacing your sprayer’s lower valve disk with the 15J546 ensures dependable sealing, stable pressure, and longer valve life — especially in high‑use or high‑pressure applications.

Installation & Maintenance Tips

• Depressurize your system fully before disassembling the valve.
• Clean the valve housing and seating surface prior to installing the disk.
• Make sure the disk sits flush to ensure proper sealing.
• Inspect for wear or grooving during routine service.
• Replace the disk if sealing performance degrades or leakage occurs.

Frequently Asked Questions