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Graco 15T278 3/8-in-18 NPT to 3/8-in QR SS Adapter

The Graco 15T278 Adapter delivers a ⅜″‑18 NPT male to ⅜″ quick‑release stainless‑steel connection for fast hose changes and reliable fluid handling.

  • Stainless‑steel construction
  • ⅜″‑18 NPT male to ⅜″ quick‑release connection
  • Built for rapid connect/disconnect
  • Ideal for high‑pressure industrial spray systems

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Graco 15T278 Adapter – 3⁄8″‑18 NPT Male to 3⁄8″ Quick‑Release Stainless Steel

Compatible Machines

  • Graco fluid and spray systems using ⅜″‑18 NPT male threads
  • Equipment requiring a ⅜″ quick‑release hose connection
  • High‑pressure industrial machines needing stainless‑steel adapter fittings

The Graco 15T278 Adapter provides a durable stainless‑steel conversion from a ⅜″‑18 NPT male thread to a ⅜″ quick‑release connection, ensuring fast hose changes and strong sealing in demanding spray applications.

Key Features

Part Number 15T278
Connections ⅜″‑18 NPT Male to ⅜″ Quick‑Release (QR)
Material Stainless steel construction
Application Rapid hose changes, industrial fluid systems
Benefit Secure fit, corrosion resistance, fast disconnect

Installation & Usage Tips

  • Ensure system is depressurized before installing the adapter.
  • Clean threads and apply appropriate thread sealant for NPT connection.
  • Firmly engage the quick‑release connection until locked in place.
  • Inspect the QR locking mechanism regularly and replace if worn.
  • Use in applications where quick disconnect/reconnect is required to minimise downtime.

Frequently Asked Questions

Yes — as long as your system uses a ⅜″‑18 NPT male thread and you need a ⅜″ quick‑release hose connection, this adapter is compatible.

Yes — the stainless‑steel construction offers excellent resistance to corrosion and harsh environments typical in coating applications.

Yes — when properly installed and locked, the QR connection maintains strong, secure fluid handling under typical industrial spray pressures.

Regularly inspect the threads and quick‑release locking mechanism, clean away debris, and replace if wear or damage is visible to avoid leaks or connection failure.

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