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Graco 100279 Ball Metallic

The Graco 100279 Ball, Metallic is a durable check-ball designed for high-pressure Graco pump systems. It ensures smooth one-way fluid flow and reliable sealing performance.

  • Used in Fire-Ball 425, President 4:1, and Dura-Flo 1100 series pumps
  • Metallic construction for strength and corrosion resistance
  • Essential for maintaining pump pressure and preventing backflow

$20.72
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Compatibility & Key Details for Graco 100279 Ball, Metallic

Compatible Machines / Pump Families

The 100279 Ball, Metallic is a check-ball used in the valve assemblies of several industrial Graco pump platforms. Always verify against your pump’s parts list.

  • Fire-Ball 425 (selected ratios incl. 10:1) lubrication pumps
  • President 4:1 air-powered pumps (selected models)
  • Fire-Ball 5:1 family (selected models)
  • Dura-Flo 1100 / 1200 high-output pump series (selected models)
  • Premier 74:1 heavy-duty pumps (selected models)
  • Viscount I 250 hydraulic pump systems (selected models)
  • Monark series (selected models)

What this part does

The Graco 100279 Ball, Metallic serves as a check ball inside the pump’s fluid section. It allows one-way flow and provides a reliable seat under pressure, maintaining prime and preventing backflow.

Quick Specs

Part Number 100279
Official Name Ball, Metallic
Function Check ball (seats in valve to control one-way flow)
Typical Location Fluid section / intake or outlet valve assemblies
Material Metallic (corrosion-resistant steel construction)
Typical Use Environment High-pressure lubrication / protective coatings systems

Fitment Guidance

  • Match the 100279 part number against your pump’s illustrated parts list (IPL).
  • Replace if the ball shows pitting, flat spots, or fails leak-down tests.
  • Clean the valve seat and housing before installing the new Ball, Metallic to ensure proper sealing.

Frequently Asked Questions

Not necessarily. The Graco 100279 is specified for particular valve geometries and seat tolerances. Using a non-spec ball can compromise sealing and pump performance.

Check your pump’s IPL or service manual and look for the exact part number 100279 in the valve assembly. If listed, it’s the correct replacement.

Clean and inspect the seat, use new seals as required, and torque the valve components to spec. Verify check-valve function with a prime/pressure test after reassembly.

Hard priming, pressure drop, pulsation, or fluid bypass upon shutdown often indicate a worn ball or seat. Inspect both parts together.

This listing is for the Ball, Metallic. Some systems use ceramic balls for abrasive/corrosive fluids; verify your manual if a different material is specified.

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