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Graco 100170 Ball Metallic

The Graco 100170 Ball, Metallic is an OEM check ball designed to maintain proper sealing and pressure consistency inside Graco pumps and valve assemblies. Ideal for restoring performance and preventing leaks.

  • Part Number: 100170
  • Material: Metallic (Precision Steel)
  • Use: Internal valve/check ball for Graco pump systems
  • Dimensions: Approx. 0.4 × 0.35 × 0.3 in
  • Weight: ~0.001 lb

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Graco 100170 — Ball, Metallic (OEM Replacement)

Compatible Machines

  • Used in select Graco lubrication & fluid transfer pump assemblies (model-specific; verify by manual)

Product Overview

The Graco 100170 Ball, Metallic is an OEM internal component (check/valve ball) that helps ensure reliable sealing and consistent fluid performance inside compatible Graco pump or valve assemblies. Replacing a worn ball restores prime/pressure and reduces leaks or pulsation.

Key Specifications

Part Number 100170
Description Ball, Metallic (check/valve ball, OEM)
Approx. Dimensions* ~ 0.4 × 0.35 × 0.3 in
Approx. Weight* ~ 0.001 lb
Typical Use Internal sealing element in pump/valve check assemblies
Compatibility Model-specific; confirm in your equipment parts manual

Features & Benefits

  • OEM fit & function — engineered for the intended Graco assemblies
  • Restores sealing — helps eliminate backflow and pressure loss
  • Reliable performance — stable check action for consistent priming & spray quality
  • Easy identification — replace by exact part number 100170

When Should I Replace It?

  • Difficulty priming or holding pressure after seal/packings are verified
  • Pulsation or inconsistent flow despite clean filters and good tip
  • Visible wear, pitting, flat spots, or contamination on the old ball

What’s Included

  • 1 × Graco 100170 Ball (Metallic)

Other check components (seats, springs, retainers) are sold separately unless stated otherwise.

Installation & Care Notes

  • Match by part number: Confirm 100170 in your unit’s parts list/exploded view.
  • Cleanliness matters: Keep mating seat and cavity spotless to ensure proper sealing.
  • Orientation: Install per the service manual; do not scratch or nick the ball surface.
  • Flush & test: After assembly, flush, prime, and verify pressure/flow at low speed first.

Frequently Asked Questions

Check your equipment’s parts manual or exploded diagram. If the list calls out 100170 for the check/valve ball, it’s compatible. If unsure, provide your model and serial number to support for verification before purchase.

Substitutions are not recommended unless the manual lists an approved alternate. Similar-looking balls can differ in diameter, material, or tolerance and may cause poor sealing or premature wear.

Hard priming, pressure drop, backflow, or pulsation. Inspect the ball and seat for pitting, embedded debris, or flat spots; replace any damaged components together for best results.

Often the mating seat, spring, or retainer should be inspected and replaced if worn. Consult your assembly diagram; many OEM kits include matched components to restore sealing as a set.

Dimensions and weight shown are approximate and provided for quick identification. Always match by the exact part number 100170 specified in your manual.

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