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Graco 15T643 Fitting Tee Swivel 3/8 NPT x 1/2 NPT

The Graco 15T643 Tee Fitting offers a robust branch connection from 3⁄8″ NPT to ½″ thread, enabling flexible system layouts and reliable performance.

  • 3/8″ NPT main inlet with ½″ outlet branch
  • High‑pressure capable for industrial spray systems
  • Reliable, leak‑free connection
  • Enhances system routing flexibility

$20.58
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Graco 15T643 Fitting Tee – 3⁄8″ NPT × ½″ Thread High‑Performance Tee Fitting

Compatible Machines

  • Graco pump and spray systems with 3/8″ NPT ports needing branch connection
  • Fluid delivery networks that require a ½″ branch outlet
  • High‑pressure industrial systems needing reliable tee fittings

The Graco 15T643 Fitting Tee 3/8″ NPT × ½″ thread provides a robust branch connection for spray system fluid routing, enabling efficient splitting of flow without compromising leak resistance or pressure capability.

Key Features

Part Number 15T643
Type Tee Fitting
Connections 3⁄8″ NPT × ½″ thread outlet
Application Branching fluid flows in spray systems
Benefit Reliable, high‑pressure capable, supports flexible system layouts

Installation & Usage Tips

  • Use proper thread sealant or tape for NPT and thread outlets.
  • Do not over‑tighten to avoid thread damage or leaks.
  • Align the tee so branch outlet is correctly oriented for system layout.
  • After installation, test for leaks under working pressure before full use.

Frequently Asked Questions

It allows two fluid paths to branch from one 3/8″ port with a ½″ outlet — ideal for flexible system layouts.

Yes — engineered for industrial spray systems and fluid delivery where high pressure is typical.

No — installation is straightforward with standard tools and proper thread sealing and alignment.

It may slightly alter flow dynamics, so ensure system sizing accounts for the branch outlet when routing fluid.

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