Graco 866133 3/8 NPT to 1/4 NPT Fitting

Product Overview: Graco 866133 3/8 NPT x 1/4 NPT Fitting

This is a **genuine Graco replacement fitting** designed to convert a 3/8" NPT connection to a 1/4" NPT connection. It’s used in fluid and hose systems on airless sprayers and ensures a secure thread connection between larger and smaller NPT threaded segments. It is ideal for paint, coatings, and other high‑pressure fluid applications. Compatible with equipment requiring a 3/8" NPT to 1/4" NPT transition. :contentReference[oaicite:1]{index=1}

Technical Specifications

Compatible Machines

Below are machines and systems where the **Graco 866133 Fitting** is referenced as a service part or compatible adapter (verified from parts lists or service manuals): :contentReference[oaicite:2]{index=2}

• Airlessco GS800 Airless Paint Sprayer — included in the parts diagram requiring a 3/8" to 1/4" NPT fitting (e.g., 866133). :contentReference[oaicite:3]{index=3}

Frequently Asked Questions