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Graco 166421 Nipple Pipe Fitting

$43.20
Available to Order
Part #: 166421

The Graco 166421 Nipple Pipe Fitting is an OEM connector used to join fluid passages in high-pressure spray systems. Ideal for maintaining leak-free performance.

  • Durable OEM construction
  • Used in pump, manifold & hose connections
  • Supports high-pressure airless systems
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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

It connects two threaded fluid passages, typically between the pump, hose, or manifold, ensuring a strong and sealed connection.

This fitting is not tied to a specific sprayer model. Compatibility is determined by matching thread type and size with the ports on your machine. Always check your sprayer’s manual before purchasing.

Yes, the 166421 is a genuine OEM component manufactured by Graco for dependable system performance.

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