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3063 - Miller Weldcraft 3/8 NPT to 1/4 NPT Brass Adapter Fitting

Packaging: 1 PER EA
$26.06/EA $18.35/1 PER EA only $18.35/EASave 30%

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OVERVIEW

Genuine Weldcraft Fitting for Custom TIG Setups

When it comes to configuring your TIG welding equipment, the integrity of your gas and water lines is non-negotiable. The Miller 3063 Weldcraft Fitting is a specialized brass adapter designed to bridge the gap between 3/8-inch NPT and 1/4-inch NPT connections. For welders building custom water cooler loops, repairing torch leads, or modifying gas regulator outputs, this adapter is a critical piece of hardware. As part of the Weldcraft family of products, it is built to the high standards expected by professional fabricators who rely on Miller equipment daily.

Leaks in a TIG system can lead to porosity in welds, shielding gas waste, or even torch overheating if coolant flow is compromised. Using high-quality fittings like the Miller 3063 ensures that your connections remain airtight and watertight under pressure. The brass material is specifically chosen for its ability to withstand the rigors of the welding environment, including exposure to moisture and varying temperatures. Unlike cheaper alternatives that may have burrs or poor threading, this Miller fitting threads smoothly and seats firmly, giving you confidence in your equipment's performance.

This adapter is often used when connecting water-cooled TIG torches to coolers that may have different port sizes, or when adapting aftermarket accessories to standard Miller power sources. It is a small but vital component that belongs in every TIG welder's spare parts kit. Don't let a mismatched thread size stop your project in its tracks; rely on genuine Miller Weldcraft fittings to keep your arc burning and your coolant flowing.

Why Choose This Fitting?

  • Leak Prevention: High-quality threads provide a superior seal for gas and water.
  • OEM Quality: Designed to fit perfectly with Miller and Weldcraft equipment specifications.
  • Tough Construction: Brass material handles the demands of shop environments.
Additional Information
Brand:Miller
Packaging Description:1-per-ea
Material:Brass
Connection Type:NPT
Thread Size A:3/8 in. NPT
Thread Size B:1/4 in. NPT
Product Type:Adapter Fitting

INCLUDED

  • (1) Brass Adapter Fitting (3/8 NPT - 1/4 NPT)

APPLICATIONS

  • Adapting TIG torch water lines to cooler connections.
  • Connecting shielding gas hoses to regulators or flowmeters.
  • General pneumatic air line adaptation in workshops.
  • Hydraulic fluid line connections for low-pressure systems.
  • Retrofitting welding machines with aftermarket accessories.

FAQ

This adapter features 3/8-inch NPT threads on one side and 1/4-inch NPT threads on the other.

Yes, the Miller 3063 is constructed from high-quality brass for durability and corrosion resistance.

Yes, as with all NPT connections, it is recommended to use Teflon tape or a suitable pipe thread sealant to ensure a leak-free seal.

Absolutely, this brass fitting is compatible with water and coolant mixtures commonly used in TIG welding cooling systems.

Yes, brass is compatible with inert welding gases such as Argon, Helium, and CO2.

The internal part number is 3063, often listed as MIL3063.

The description indicates it is an adapter; typically, NPT adapters can vary, but standard bushings are often male-to-female, while nipples are male-to-male. Please verify the specific gender required for your setup, though this SKU typically refers to a bushing or nipple adapter configuration.

Yes, provided the equipment uses standard NPT threads of the matching sizes (3/8" and 1/4"), this fitting is universally compatible.
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