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Graco 101178 Metallic Ball

The Graco 101178 Metallic Ball is a durable check-valve component used in lubrication and industrial pump systems for reliable sealing and fluid control.

  • Part Number: 101178
  • Material: Metallic (wear-resistant for heavy-duty use)
  • Used In: Fire-Ball®, Monark®, President®, and Senator® pumps
  • Function: Prevents backflow and maintains pump pressure stability
  • Size Reference: Commonly listed as 1-1/4″ ball

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Graco 101178 Metallic Ball — Compatibility & Specs

Compatible Machines

Always confirm with your unit’s parts list before ordering.

  • Graco Fire-Ball® Series Pumps — including 6:1 Fire-Ball 425 (listed in parts breakdowns that require a metallic check/inlet ball).
  • Graco Monark® Series Pumps — selected ratios (e.g., 5:1, 1.5:1) where the parts list specifies metallic ball PN 101178.
  • Graco President® Series Pumps — models whose service manuals call out metallic ball PN 101178 (e.g., 10:1 variants).
  • Graco Senator® / King® Industrial Pumps — specific configurations (e.g., 22:1 Senator) when the pump’s check-valve assembly specifies PN 101178.

Product Summary

The Graco 101178 Metallic Ball is a hardened metal check-ball used in the fluid/check-valve assembly of various Graco industrial and lubrication pumps. It provides a positive seal to prevent backflow, stabilize prime, and maintain consistent pump pressure.

Key Details

Part Number 101178
Component Type Metallic check-ball for pump fluid/check-valve assemblies
Typical Reference Size Commonly referenced as 1-1/4″ ball in certain pump breakdowns (confirm in your manual)
Primary Application Lubrication & industrial pump lines (e.g., Fire-Ball®, Monark®, President®, Senator®, King®)
Function Seals against the seat to prevent reverse flow and maintain prime
Material Metallic (durable, wear-resistant; verify media compatibility)

Selection & Verification Tips

  • Match by part number (101178) shown in your pump’s exploded view and bill of materials.
  • Check pump ratio/model (e.g., Fire-Ball 425 6:1, President 10:1) and the check-valve size.
  • Confirm media compatibility (lubricants/fluids) for metallic ball vs. alternative materials (e.g., ceramic).

Frequently Asked Questions

It acts as a check-ball in the pump’s fluid section, sealing against the seat to prevent backflow, maintain prime, and stabilize output pressure during each stroke.

It appears in parts lists for Fire-Ball® Series (e.g., 6:1 Fire-Ball 425) and selected Monark®, President®, Senator®, and King® pumps. Always verify by checking your pump’s exploded diagram for PN 101178.

Many references list it as a 1-1/4″ metallic ball; however, confirm the size and seat pairing in your model’s parts manual to avoid mismatches.

Match the part number (101178) in your pump’s service manual or exploded parts diagram. If uncertain, share your model & serial so we can cross-check the official bill of materials.

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