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Graco 100505 Bushing Pipe

The Graco 100505 Bushing Pipe is a durable carbon-steel reducer used to adapt fluid connections from 3/4 NPT(M) to 3/8 NPT(F). Ideal for maintaining proper flow and sealing integrity in Graco hydraulic sprayers.

  • Thread: 3/4 in NPT(M) → 3/8 in NPT(F)
  • Material: Carbon Steel
  • OEM: Genuine Graco Part
  • Fits: GH5030, GH3640, GH2560, GH2075, GH1015, GH733 Hydra

$25.66
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Compatible Machines — Graco 100505 Bushing, Pipe

Confirmed models that use this OEM Graco adapter. Always verify by part number and thread size before ordering.

  • Graco GH5030 (687100) — Gas/Hydraulic Airless Sprayer
  • Graco GH3640 (687327) — Gas/Hydraulic Airless Sprayer
  • Graco GH2560 (965168) — Gas/Hydraulic Airless Sprayer
  • Graco GH2075 (965171) — Gas/Hydraulic Airless Sprayer
  • Graco GH1015 (965165) — Gas/Hydraulic Airless Sprayer
  • Graco GH733 Hydra (231733, Series E) — Hydra Sprayer
  • Graco GH733 (230975) — GH733 Hydra Sprayer

Overview

The Graco 100505 is a Bushing, Pipe used as a reducer/adapter in fluid circuits. It converts a 3/4 in NPT male connection to a 3/8 in NPT female port. Built from carbon steel for durability in professional painting applications.

Technical Specifications

Part Number 100505
OEM Graco (Genuine)
Description Bushing, Pipe — reducer/adapter fitting
Thread (Male) 3/4 in NPT(M)
Thread (Female) 3/8 in NPT(F)
Material Carbon Steel
Typical Use Fluid path adaptation in airless sprayers and related pressure/return circuits

Key Benefits

  • Correct fitment: Matches Graco assemblies that require 3/4 NPT(M) → 3/8 NPT(F).
  • Durable build: Carbon steel for long service life in demanding spray environments.
  • OEM quality: Genuine Graco component for reliable sealing and compatibility.

Installation Tips

  • Clean threads and inspect for damage before installation.
  • Apply a compatible thread sealant (or PTFE tape) as specified in your sprayer manual.
  • Avoid over-tightening; snug plus a small wrench turn typically ensures a proper seal.
  • Pressurize and perform a leak check after installation.

Frequently Asked Questions

Not necessarily. It fits any Graco assembly that specifically calls for a 3/4 NPT(M) to 3/8 NPT(F) reducer bushing. Always verify against your sprayer’s parts list or schematic.

Follow your machine manual. Typically, a compatible paste sealant or PTFE tape is used on NPT threads. Do not contaminate the fluid path; apply sparingly and keep sealant out of the bore.

No—this part is generally listed as carbon steel. If your application requires stainless, consult the parts manual for the correct stainless alternative.

Check the thread callouts in your model’s exploded diagram. You should see 3/4 in NPT(M) on the male side and 3/8 in NPT(F) on the female side where the bushing is installed.

Yes. Over-tightening can crack mating ports or distort threads. Tighten gradually, test for leaks, and re-snug if needed per the manual’s guidance.

 

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