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Graco 103875 Barb Hose Adapter

Graco 103875 Barb Hose Adapter gives a tight, leak-resistant connection from 1/8" NPT (M) ports to 1/4" ID hose. Ideal for hydraulic motor drain/bottle lines and general fluid return on Graco systems.

  • Thread → Hose: 1/8" NPT (M) to 1/4" ID
  • Use Cases: Viscount I/II hydraulic motors, drain/bottle assemblies
  • Install: Sealant on NPT; clamp the hose behind the last barb ridge
  • Check: Verify port thread and hose I.D. before ordering

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Secure 1/8 NPT to 1/4 in. Hose Connections

Compatible Machines

  • Graco Viscount II Hydraulic Motor series (standard & “Quiet” variants)
  • Graco Viscount I Hydraulic Motor series
  • Pioneer Athletics S90 Field Striper (uses Graco components)
  • Any Graco system requiring a 1/8" NPT (M) to 1/4" ID hose barb connection

Product Overview

The Graco 103875 Barb Hose Adapter connects a 1/8" NPT (male) port to flexible tubing with a 1/4" (6.4 mm) ID. It’s commonly used on Graco hydraulic motor drain/bottle assemblies and other fluid lines where a compact, leak-resistant barb is required.

  • Correct fit: 1/8" NPT (M) to 1/4" ID hose for secure, reliable hose terminations.
  • Versatile use: Fits multiple Graco platforms (hydraulic motors, drain/bottle kits, and general fluid transfer lines).
  • Service-friendly: Simple install/removal during routine maintenance.

Technical Specifications

Part Number 103875
Type Adapter, Hose, Barb
Thread 1/8" NPT (Male)
Hose Size 1/4" (6.4 mm) ID
Typical Use Hydraulic motor drain/bottle assemblies, return lines, and general fluid connections on Graco systems.

Frequently Asked Questions

It adapts a 1/8" NPT (male) outlet to a 1/4" ID flexible hose via a barbed end for a tight, leak-resistant connection.

It appears in parts lists for Viscount I and Viscount II hydraulic motors and is used on equipment like the Pioneer S90 field striper that integrates Graco components. Always confirm thread/hose sizes on your specific unit.

Yes—use a compatible thread sealant or PTFE tape on the NPT threads. Do not apply sealant to the barbed end; secure the hose with a clamp.

Yes, if the port is 1/8" NPT (M) and the hose is 1/4" ID. Check material compatibility with your fluid.

Cut hose square, push fully over the barb, and clamp behind the last barb ridge. Hand-start NPT threads, then tighten to spec without over-torquing.

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