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Graco 118459 3/4-inch Swivel Union Fitting

Graco 118459 Union Swivel Fitting is a durable 3/4" stainless-steel connector with a 360° swivel design for smooth rotation and leak-free performance in high-pressure systems.

  • Part Number: 118459
  • Thread Type: 3/4” NPT (M × F)
  • Pressure Rating: Up to 4,000 PSI
  • Material: Stainless Steel
  • Ideal for: Graco Sprayers, Pumps & Agitator Systems

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Graco 118459 3/4" Union Swivel Fitting – High-Performance Rotating Connector

Compatible Machines

  • Graco Airless Sprayers
  • Graco Feed Pump Systems
  • Graco Agitator Kits
  • Industrial Coating and Mixing Systems

Product Description

Graco 118459 Fitting Union Swivel 3/4" is a precision-engineered connector designed for high-pressure fluid handling systems. Featuring a 360° swivel design and 3/4” NPT connections, it reduces hose strain, ensures leak-free sealing, and provides smooth rotation under torque. Ideal for industrial spraying and pumping operations, it supports consistent flow even in demanding environments.

Key Specifications

Part Number 118459
Thread Type 3/4–14 NPT(M) × 3/4–14 NPT(F)
Swivel Type 360° Full Rotation with Ball-Bearing Support
Material Stainless Steel Alloy
Pressure Rating Up to 4,000 PSI (Peak 6,000 PSI)
Temperature Range -20°F to 180°F
Seal Type Nitrile O-Rings with Backup Washers

Features & Benefits

  • Reduces hose torsion and fatigue through 360° swivel motion.
  • Provides leak-free sealing with precision NPT threads.
  • Constructed from corrosion-resistant stainless steel for extended lifespan.
  • Maintains consistent flow with minimal turbulence and pressure drop.
  • Compatible with a wide range of Graco sprayers and pump systems.

Installation & Maintenance Tips

  • Apply thread sealant or PTFE tape before installation to ensure a tight seal.
  • Torque fittings to recommended 30–35 ft-lbs for proper engagement.
  • Regularly inspect O-rings for wear and replace as needed.
  • Flush fluid lines after each use to prevent buildup and extend fitting life.

Frequently Asked Questions

The Graco 118459 Union Swivel Fitting is compatible with Graco airless sprayers, pump systems, agitator kits, and fluid transfer assemblies using 3/4” NPT threaded connections.

This swivel fitting supports up to 4,000 PSI continuous pressure and 6,000 PSI peak pressure, making it suitable for heavy-duty coating and industrial pumping applications.

Regularly lubricate swivel bearings, inspect seals during maintenance intervals, and avoid overtightening during installation. Clean with compatible solvents after each spray operation to prevent residue buildup.

The Graco 118459 Fitting Union Swivel 3/4" offers unmatched strength, smooth rotation, and long-lasting performance — ensuring consistent fluid delivery and reliability in every industrial spraying or pumping setup.

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