The Tweco 404162-004 is a specialized 120V solenoid valve designed for use within industrial welding power sources. As a critical component in the gas management system of MIG, TIG, and Plasma cutting equipment, this valve is responsible for the electromechanical actuation of shielding gas flow. When the machine's trigger circuit is engaged, the 120V coil energizes, lifting the internal plunger to allow gas to pass through to the torch. Upon release, the valve closes instantly, preventing gas waste and ensuring the weld pool is protected only during the active arc cycle and post-flow duration.
Manufactured to meet the strict engineering standards of the ESAB/Tweco/Thermal Arc family, this component ensures seamless integration with compatible machine control boards. The 120V AC specification is a common control voltage in many industrial power sources, making this a vital spare part for maintenance departments servicing older Thermal Arc inverters or specific Tweco setups. Failure of a solenoid valve typically manifests as either a lack of shielding gas (resulting in porosity) or a valve that is stuck open (wasting expensive gas). Replacing the unit with this genuine OEM part restores factory-specified functionality.
The valve features robust housing materials capable of withstanding the thermal fluctuations and vibrational stresses common in welding environments. Its port configuration is designed to match the internal plumbing of the specific machine models it services, minimizing the need for adapters or retrofitting. For maintenance personnel, verifying the coil voltage is essential before installation; this unit is strictly for 120V control circuits and is not interchangeable with 24V or 48V systems often found in other equipment.
Key Technical Specifications:
| Additional Information |
|---|
| Packaging Description:1 Per Ea, pack of 1 |
| Voltage:120V |
| Product Type:Solenoid Valve |
| Application:Gas Flow Control, Welding Machine Repair |
| ----- new values below ---- |
| Product Type:Solenoid Valve |
| Application:Gas Flow Control, Welding Machine Repair |
| Compatible Brands:Thermal Arc, Tweco, ESAB |
| Brand:Tweco |
| Voltage:120V |
| Packaging Description:1 Per Ea |
