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Graco 100081 Bushing Pipe

The Graco 100081 Bushing Pipe is a steel adapter that connects ½″ NPT male to ⅜″ NPT female threads. Ideal for adapting ports in Graco fluid systems, sprayers, and Hydra-Clean units.

  • Thread Type: NPT (½″ Male × ⅜″ Female)
  • Material: Steel
  • Function: Reduces larger pipe size to smaller
  • Used In: Airless sprayers, pneumatic pumps, and pressure washers

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Graco 100081 — Bushing, Pipe (½″ NPT Male × ⅜″ NPT Female)

Compatible Machines

This Graco 100081 Bushing, Pipe is listed on parts breakdowns for the following legacy and industrial Graco equipment:

  • Graco 226970 — 23:1 Ratio Hydra Sprayer
  • Graco 231114 (Series A) — 23:1 Ratio Hydra Sprayer
  • Graco 231-133 / 231-134 / 231-135 / 231-136 / 231-137 — Pneumatic Cart-Mount Pumps
  • Graco 231-145 / 231-146 / 231-147 / 231-170 / 231-171 / 231-172 / 231-173 / 231-301 — Pneumatic Cart-Mount Pumps
  • Graco 800-295 & 800-413 — Hydra-Clean Pressure Washers

What It Is

The Graco 100081 Bushing, Pipe is a threaded adapter used to reduce a ½″ NPT male port to a ⅜″ NPT female port inside Graco fluid systems. It enables secure connection between different thread sizes in spray, pump, and pressure-wash assemblies.

Key Specifications

Graco Part # 100081
Description Bushing, Pipe — ½″ NPT (Male) × ⅜″ NPT (Female)
Thread Standard NPT (National Pipe Taper)
Typical Material Steel (suitable for common coatings/fluids; verify chemical compatibility)
Typical Use Adapts larger port to smaller line/component in airless sprayers, pneumatic pumps, and Hydra-Clean systems

Fit Notes & Installation Tips

  • Confirm your unit’s exact model/revision; legacy variants may differ.
  • For NPT threads, apply appropriate thread sealant where specified by the manual.
  • Do not overtighten; tapered threads seal by interference—follow torque guidance where available.
  • If your port sizes differ, choose the correct Graco reducer/bushing part number for that transition.

Frequently Asked Questions

It’s a pipe bushing that reduces a ½″ NPT male port to a ⅜″ NPT female port so you can connect components with different thread sizes in Graco fluid systems.

The 100081 uses tapered NPT threads (½″ M × ⅜″ F). If your system is BSP, you’ll need the correct BSP bushing instead of this part.

For non-swivel NPT connections, Graco manuals typically call for an appropriate pipe thread sealant. Always follow your unit’s specific service manual.

Match the parts manual for your model (and series/revision) to see if 100081 appears in the bill of materials or exploded view. Contact support with your model and serial for verification.

Graco offers multiple bushings/adapters in other sizes. Provide the port sizes you need (and thread standard) to select the correct part number.

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