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Miller 218422 Gas Valve 230Vac Welding Kit — main product image
Miller

Miller 218422 Gas Valve 230Vac Welding Kit

OEM Miller 230Vac gas valve replacement kit for reliable welding system gas flow control.

$140.99*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Miller 218422 Gas Valve Kit is an OEM replacement component designed to maintain the precise gas flow control that is critical to producing clean, high-quality welds. Gas valves in welding systems regulate the flow of shielding gas to the torch, and when they begin to fail, the result can be inconsistent gas coverage, porosity in welds, and wasted shielding gas. This genuine Miller part is rated for 230Vac operation and is engineered to meet the same specifications as the original factory-installed valve.

Weighing just 4.2 ounces with dimensions of 6 x 1 x 1 inches, this compact component is designed for direct replacement within compatible Miller welding systems. As with any OEM electrical component, it is essential to verify that your specific Miller welder uses part number 218422 before purchasing. Consulting your machine's parts breakdown or contacting Miller technical support with your welder's model and serial number will confirm whether this is the correct valve for your equipment.

Key Features

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Specifications

Brand
Miller
Part Number
218422
Component Type
Gas Valve
Voltage Rating
230Vac
Item Weight
4.2 ounces
Product Dimensions
6 x 1 x 1 inches
Package Quantity
1

Pros & Cons

👍 Pros

  • Genuine OEM Miller part ensures correct fit and reliable performance in compatible systems
  • Lightweight at just 4.2 ounces for straightforward handling during installation
  • Restores proper gas flow control to maintain weld quality and shielding gas efficiency
  • Compact 6 x 1 x 1 inch form factor fits within the existing valve housing without modification

👎 Cons

  • Compatibility is limited to specific Miller welding systems requiring this exact 230Vac valve
  • Single valve per package means multiple units must be ordered if spares are needed
  • No installation instructions or gaskets included in the kit
  • 230Vac-only rating makes it unsuitable for 115V Miller systems

Frequently Asked Questions

The Miller 218422 is an OEM replacement part. Check your Miller welder's parts manual or contact Miller support with your machine's serial number to confirm compatibility before purchasing.
This gas valve is specifically rated for 230Vac operation. It is not interchangeable with 115V gas valves and should only be installed in systems wired for 230V.
The package includes one gas valve with the associated nut, as specified by Miller part number 218422.
While experienced welding equipment owners can handle the replacement, if you are unfamiliar with welding system internals and electrical components, professional installation is recommended to ensure proper operation and safety.

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