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Graco 178654 Stem Guide

The Graco 178654 Guide Stem ensures accurate movement of internal valve parts, supporting stable and consistent fluid control.

  • Provides guided alignment inside the valve
  • Improves operating smoothness
  • OEM-built for long service life

$199.75
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Graco 178654 Guide Stem – Product Description

Compatible Machines

  • Graco industrial valve assemblies requiring guide stems
  • Pneumatic and hydraulic sprayer systems
  • Fluid control modules built with guided valve stems

Key Features

Specification Details
Part Number 178654
Component Type Guide Stem
Function Ensures controlled movement of valve internals
Material Precision-machined metal

Installation & Usage Tips

  • Install only in clean, debris-free valve housings.
  • Verify alignment during reassembly to avoid binding.
  • Inspect related valve components for wear before installation.
  • Perform a slow cycle test after assembly to ensure smooth travel.

Frequently Asked Questions

It guides the internal valve components to ensure smooth and aligned movement.

Indirectly, yes — proper guidance ensures stable valve operation which helps maintain correct pressure.

Reusing is possible, but replacement is recommended if there is visible wear or friction marks.

Light lubrication may help during assembly, but avoid excess oil that can trap debris.

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