Graco 166225 Fluid Regulator Cap

Compatible Machines

The Graco 166225 Fluid Regulator Cap is used in Graco’s fluid-pressure regulator assemblies and is not tied to specific sprayer models directly. It fits:

• Graco Fluid Pressure Regulator Assembly 306813
• Other Graco industrial systems using the same regulator design

About the Graco 166225 Fluid Regulator Cap

The 166225 Fluid Regulator Cap is a precision-machined component designed to cover and secure the internal section of Graco’s fluid-pressure regulators. It helps maintain a stable seal over the diaphragm and internal regulating components, ensuring consistent and accurate fluid-pressure control in industrial spray systems.

This cap is essential when servicing or rebuilding a regulator, especially when the original cap becomes worn, damaged, or corroded. It maintains proper alignment and sealing, helping your Graco system run efficiently.

Key Features

• High-quality Graco OEM part for long-lasting durability
• Ensures reliable sealing and regulator stability
• Supports consistent fluid-pressure output for smooth spraying
• Designed specifically for Graco industrial regulator assemblies

When to Replace

• If the regulator leaks due to a damaged or worn cap
• If corrosion or physical damage is visible on the cap surface
• During regulator rebuilds to ensure full sealing integrity

Frequently Asked Questions