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Graco 15K040 Nut Regulator Metal

The Graco 15K040 Metal Regulator Nut secures the pressure regulator assembly, maintaining the regulator’s integrity and preventing leaks in your spray system.

  • Metal nut for pressure regulator assembly
  • OEM replacement for regulator retention
  • Ensures secure sealing around regulator components

$10.66
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Graco 15K040 Nut Regulator Metal – Product Overview

Compatible Machines

  • Graco sprayer systems with pressure regulator requiring part 15K040
  • Airless spray systems where regulator nut is exposed to fluid and pressure

The Graco 15K040 Metal Regulator Nut is a high‑quality retention nut used to secure the pressure regulator body in your Graco sprayer. Ensuring this nut is properly installed and torqued is vital to maintain regulator performance and prevent unwanted fluid or air leaks around the regulator assembly.

Key Feature Description
Metal Construction Durable under pressure and chemical exposure.
OEM Specification Direct fit replacement for Graco equipment.
Sealing Integrity Prevents regulator body leaks and maintains system pressure.
Service Friendly Easy to reinstall during maintenance.

Installation & Maintenance Tips

  • Relieve system pressure before removing the regulator nut.
  • Inspect regulator body and seals for wear before installing the new nut.
  • Tighten to manufacturer specification to ensure proper seal without damaging threads.
  • Check for leaks after system restart and adjust if needed.

Frequently Asked Questions

A loose regulator nut can cause pressure loss, fluid bypass, and damage to the regulator body or seals.

It’s recommended to replace the nut if you service the regulator, since wear or thread damage can impair sealing.

Inspect during routine maintenance or if you experience regulator drift, leaks or pressure instability.

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