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Graco 104172 Tube Fitting

The Graco 104172 Tube Fitting is a straight connector for auxiliary air/water lines—ideal wherever a 1/8" NPT (male) port meets 1/4" OD tubing.

  • Thread: 1/8" NPT (male)
  • Tubing: 1/4" OD
  • Style: Straight tube fitting
  • Service: Air / Water (auxiliary control lines)
  • Typical Rating: ~250 psi (17 bar)
  • Note: Not for high-pressure paint hose
  • OEM: Genuine Graco part 104172

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Compatibility & Key Specs — Graco 104172 Tube Fitting

Compatible Machines / Systems

Use the list below as a quick guide. This fitting is used on auxiliary air/water tubing lines rather than the high-pressure paint hose.

  • Graco equipment that uses 1/8" NPT (male) ports with 1/4" OD tubing for air or water lines
  • Air signal / control panels and low-pressure utility manifolds that specify a straight tube fitting
  • Protective-coatings, finishing, and fluid-handling setups where auxiliary lines are rated to ~250 psi (17 bar)

Product Overview

The Graco 104172 Tube Fitting is a straight connector designed for auxiliary air or water service. It adapts a 1/8" NPT (male) port to 1/4" OD tubing, commonly used for control or utility lines—not for main high-pressure paint flow.

Technical Specifications

Attribute Value
Part Number 104172
Type Fitting, Tube (straight)
Thread (Port Side) 1/8" NPT (male)
Tubing Connection 1/4" OD tube
Typical Service Air / Water (auxiliary & control lines)
Typical Working Pressure ≈ 250 psi (17 bar) — application dependent
Not for main high-pressure paint hose. Use only where the equipment manual specifies 104172 or equivalent for auxiliary lines.

Frequently Asked Questions

It fits models that specify part 104172 in their parts manual and use 1/8" NPT (male) ports with 1/4" OD tubing for air/water lines. Check your unit’s exploded diagram or contact support with your model and serial number to confirm.

No. 104172 is intended for auxiliary air/water tubing (approx. 250 psi). Main fluid hoses in airless systems operate at much higher pressures and require dedicated high-pressure fittings.

Use an appropriate thread sealant for NPT connections (e.g., PTFE tape or compatible liquid sealant) per your equipment manual and fluid type. Do not over-torque; tighten to achieve a leak-free seal.

Confirm the working pressure of the line in your machine’s documentation. This fitting is typically used around ~250 psi for air/water service. If your application exceeds that, use a fitting with the correct rating specified by the manufacturer.

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