Graco 100139 Plug Pipe

Graco 100139 Plug, Pipe is a small threaded plug designed for sealing unused 1/8-27 NPT ports on Graco spray guns and pneumatic manifolds. Ideal for maintaining leak-free performance and preventing contamination.

Part Number: 100139
Thread Size: 1/8-27 NPT
Used on: Fusion AP, CS, PC, Probler P2, XTR, Voltex
Purpose: Seals unused air/fluid ports

$9.43

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Description

Graco 100139 – Plug, Pipe (1/8-27 NPT) • Part Overview & Compatibility

Compatible Machines / Guns

This Graco 100139 Plug, Pipe is used to cap/close 1/8-27 NPT ports on the following Graco spray guns & systems:

Fusion AP (Air Purge) Guns
Fusion CS (ClearShot) Guns
Fusion PC (ProConnect) Guns
Probler P2 Guns
XTR Airless Spray Guns
Voltex Spray Equipment

Key Specifications

Part Number	100139
Item Name	Plug, Pipe
Thread	1/8-27 NPT (pipe plug)
Typical Use	Seals unused air/fluid manifold ports and gun-side side ports; also appears in certain pneumatic crossover assemblies.
Fits	See “Compatible Machines / Guns” above.

Product Details

The Graco 100139 Plug, Pipe is a compact threaded plug for closing 1/8-27 NPT ports on spray guns and related pneumatic/manifold components. It helps prevent leaks and contamination by securely sealing unused passages on Fusion AP/CS/PC, Probler P2, and selected XTR/Voltex equipment.

Installation & Notes

Confirm the port is 1/8-27 NPT before installation.
Use a suitable pipe thread sealant or tape if required by your application.
Tighten snugly—avoid over-torqueing to protect threads in gun/manifold body.
Replace any damaged or rounded plugs to maintain proper sealing.

Frequently Asked Questions

Yes—this 1/8-27 NPT plug is used across Fusion AP, Fusion CS (ClearShot), and Fusion PC guns for sealing specific manifold/side ports. Always check your parts diagram to confirm location.

Yes. The 100139 Plug, Pipe also appears in certain Graco pneumatic crossover kits and panels, where it caps unused air passages or ports in assemblies.

Many applications require a pipe thread sealant (or tape) on NPT threads to ensure a leak-free seal. Follow your equipment manual’s guidance.

Check the exploded diagram for your exact model (Fusion AP/CS/PC, Probler P2, etc.). The plug is typically labeled as a pipe plug on manifold side ports or unused passages.

This part uses 1/8-27 NPT pipe threads. If your port is a different size or thread type, select the correct plug to match.