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Graco 159801 90-Degree Swivel Union Fitting

The Graco 159801 90-Degree Swivel Union Fitting allows smooth hose rotation while providing a secure 90° fluid-line connection for high-pressure systems.

  • Prevents hose twisting in compact routing areas
  • 3/8 in. NPT inlet × 1/2 in. NPT outlet
  • Used in proportioners and dual-hose assemblies
  • Suitable for high-pressure fluid applications

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$101.89
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Overview of the Graco 159801 90-Degree Swivel Union Fitting

The Graco 159801 90-Degree Swivel Union Fitting is a high-pressure swivel connector designed to prevent hose twisting while allowing smooth directional changes in fluid lines. Commonly used in tight-routing areas within Graco proportioning and fluid-handling systems.

Compatible Machines / Systems

Compatible Equipment
Graco 8900 Proportioner
Dual-Hose / Dual-Reel Assemblies
Industrial Coating & Fluid-Handling Systems
High-Pressure Hose Routing Setups
Product Details
Part Number 159801
Type 90° Swivel Union Fitting
Thread Size 3/8 in. NPT (inlet) × 1/2 in. NPT (outlet)
Typical Pressure Rating Up to 3,000 PSI (per proportioner fluid-line specification)
Usage Prevents hose twisting and supports compact routing

Installation Overview

Installing the 159801 Swivel Union ensures smooth hose rotation and secure high-pressure connections within fluid systems.

  • Confirm inlet and outlet threads match your Graco fluid-line specifications.
  • Apply appropriate thread sealant for high-pressure NPT fittings.
  • Avoid over-tightening to preserve swivel action.
  • Check for leaks after pressurizing the system.

Frequently Asked Questions

It allows a 90-degree directional change while letting the hose swivel freely, preventing twisting and improving hose life in high-pressure systems.

Yes. It uses 3/8 in. and 1/2 in. NPT threads, which match many Graco fluid-handling components and hose-routing configurations.

Yes. It is commonly used in proportioners and industrial systems rated up to 3,000 PSI, depending on the specific installation.

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