Gas Valve Knob & Stem Assembly for TIG Torches

Replacement gas valve knob and stem assembly for compatible Miller Weldcraft TIG torches.
The Miller Weldcraft VS-1 Gas Valve Knob and Stem Assembly is designed to restore manual shielding gas control on compatible valve-equipped TIG torches. Whether your existing gas valve is worn, leaking, difficult to turn, or damaged, the VS-1 provides a replacement for the torch's manual gas control components.

The assembly includes a knurled gas control knob, threaded valve stem, and sealing O-ring. These components work together to allow the operator to manually open and close shielding gas flow directly at the TIG torch.

Designed for compatible WP-26V, WP-26FV, WP-26FVHD, WP-18V, and WP-200VTB Series TIG torches, the VS-1 is particularly useful for welding setups that do not have an internal gas solenoid.

Key Features

• Genuine Miller Weldcraft Replacement: Replacement valve knob and stem assembly for compatible Weldcraft TIG torches.
• Manual Gas Flow Control: Allows the operator to turn shielding gas on and off directly at the torch.
• Knurled Control Knob: Textured knob provides a convenient grip for manual adjustment.
• Threaded Valve Stem: Replacement component for the torch's manual gas valve mechanism.
• Sealing O-Ring: Helps maintain a proper seal within the gas valve assembly.
• Multiple Torch Applications: Designed for compatible valve-equipped 18, 26, and A-200 Series TIG torches.
• Replacement for Worn Valves: Useful when repairing gas valves that leak, stick, or no longer operate correctly.
• Ideal for Manual Gas Control Setups: Commonly used with welding power sources without automatic shielding gas control.

What's Included?

Package Contents: One VS-1 replacement valve knob and stem assembly with O-ring. Complete TIG torch not included.

Compatible TIG Torches

The VS-1 is designed for use with compatible Miller Weldcraft TIG torches equipped with the appropriate manual gas valve assembly.

Important Compatibility Note: The VS-1 is intended for compatible manual gas valve assemblies. Standard WP-26 and WP-26F torch bodies without gas valves do not require this component. Confirm your exact torch model and existing valve part number before ordering.

Manual Shielding Gas Control

Some TIG welding power sources do not have an internal gas solenoid to automatically start and stop shielding gas flow. In these setups, a valve-equipped TIG torch allows the welder to manually control the gas directly at the torch.

The VS-1 Gas Valve Knob and Stem Assembly provides the replacement components needed to operate the compatible manual gas valve.

The operator can open the valve before welding to establish shielding gas flow and close it after welding once the required post-flow protection is complete.

Restore Proper Gas Valve Operation

Over time, manual gas valves may become difficult to operate due to wear, damaged threads, or deterioration of sealing components.

Common reasons for replacing the VS-1 include:

• Worn or damaged gas valve knobs
• Gas valve stems that are difficult to turn
• Damaged or worn valve stem threads
• Shielding gas leakage around the valve assembly
• Worn or damaged sealing O-rings
• Routine maintenance of valve-equipped TIG torches

Replacing worn components helps maintain proper manual gas control and reduces the risk of unwanted shielding gas loss from a damaged valve assembly.

Common Applications

• WP-26V TIG torch maintenance
• WP-26FV and WP-26FVHD torch repairs
• WP-18V gas valve replacement
• A-200 valve-equipped TIG torch maintenance
• Repairing leaking manual gas valves
• Replacing worn valve knobs and stems
• Scratch-start TIG welding setups
• Lift-Arc TIG welding setups
• Field welding equipment maintenance
• TIG welding systems without automatic shielding gas control

Frequently Asked Questions

What is the Miller Weldcraft VS-1?
The VS-1 is a replacement gas valve knob and stem assembly used to control shielding gas manually on compatible Miller Weldcraft TIG torches.

What TIG torches does the VS-1 fit?
The VS-1 is used on compatible valve-equipped TIG torches, including WP-26V, WP-26FV, WP-26FVHD, WP-18V, and WP-200VTB configurations. Always verify your torch's original valve part number.

What comes with the VS-1 assembly?
The assembly includes a knurled valve knob, threaded valve stem, and sealing O-ring.

What does the gas valve do?
The valve allows the operator to manually open and close shielding gas flow directly at the TIG torch.

Why would I need a manual gas valve?
Manual gas valves are useful for TIG welding power sources that do not have a built-in gas solenoid or automatic shielding gas control.

Does the VS-1 include an O-ring?
Yes. The replacement assembly includes an O-ring to help maintain a proper seal within the gas valve assembly.

Can the VS-1 help repair a leaking TIG torch valve?
Yes. If the leakage is caused by worn valve stem or sealing components, replacing the VS-1 assembly may restore proper operation. Inspect the torch valve body for additional damage before installing the replacement.

Is this compatible with standard WP-26 torches?
The VS-1 is intended for compatible valve-equipped versions of the WP-26 Series. Standard WP-26 torch bodies without manual gas valves do not use this assembly.

Can the VS-1 be used with water-cooled TIG torches?
Yes. The VS-1 is also listed for compatible valve-equipped water-cooled TIG torch configurations, including the WP-18V.

Is the complete TIG torch included?
No. This listing includes the VS-1 replacement gas valve knob and stem assembly with O-ring only.

What is the replacement part number?
The Miller Weldcraft replacement part number is VS-1.