Graco 166421 Nipple Pipe Fitting

Graco 166421 Fitting – Nipple Pipe

Compatible Machines

This Graco 166421 fitting is a universal pipe-nipple style connector used across multiple Graco fluid and airless systems. It does not have a specific machine-exclusive listing, so compatibility depends on matching thread size, pressure rating, and port type. Check your sprayer’s parts manual to confirm fitment.

• General Graco Airless Sprayers
• General Graco Finishing Systems
• Models using 1/4" NPTF-style fittings in fluid manifolds

Product Overview

The Graco 166421 Fitting Nipple Pipe is an OEM component designed for connecting fluid passages within high-pressure spray systems. It is commonly used between pump outlets, manifolds, valve blocks, and hose assemblies where a durable threaded pipe nipple is required.

Key Features

• OEM Graco pipe-nipple style fitting for secure fluid connections
• High-strength construction suitable for airless system pressures
• Ideal for pump, manifold, and hose connection points
• Helps maintain leak-free fluid pathways

When to Use This Fitting

• Replacing a damaged or leaking nipple-pipe connection
• Restoring proper sealing in fluid manifolds
• Ensuring OEM-spec performance in high-pressure applications

Frequently Asked Questions