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Graco 178651 4-Way Spool

The Graco 178651 Spool ensures precise fluid control inside the valve assembly for consistent sprayer performance.

  • OEM-grade spool for accurate flow regulation
  • Supports smooth valve movement
  • Designed for Graco industrial pump systems

Retail Price: $85.5
You save: $1.49 (1.74%)
Our Price: $84.01
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Graco 178651 Spool – Detailed Product Description

Compatible Machines

  • Graco industrial fluid valves
  • Graco pneumatic pump valve assemblies
  • Systems using 178651 spool as part of internal metering

Key Features

Specification Details
OEM Part Number 178651
Component Valve Spool
Function Controls fluid metering and smooth valve travel
Material Precision-machined metal

Installation & Usage Tips

  • Ensure the valve body is clean before installing the spool.
  • Lubricate lightly to support smooth movement.
  • Replace damaged O-rings or seals during installation.
  • Check operation after reassembly to confirm free travel.

Frequently Asked Questions

It regulates fluid flow and ensures internal valve movement remains accurate and consistent.

No, the spool must match the exact valve assembly it was designed for.

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