404162-004 - Tweco 120V Gas Solenoid Valve Replacement 404162-004

Restore Your Welder's Performance

Is your welder sputtering, creating porous welds, or leaking expensive shielding gas even when you aren't welding? The culprit is often a faulty gas solenoid valve. The Tweco 404162-004 Solenoid Valve (120V) is the genuine replacement part you need to get your machine running smoothly again. This valve acts as the gatekeeper for your shielding gas, opening precisely when you pull the trigger and closing tight when you stop, ensuring your weld pool is protected without wasting your supply.

Why Choose OEM?
When repairing your trusty welder, fit and reliability are everything. Generic valves might look similar, but they often require messy modifications to mount or wire correctly. This genuine Tweco/Thermal Arc part is designed to drop right into place on compatible machines. It operates on a standard 120V circuit, syncing perfectly with your welder's internal timing for pre-flow and post-flow settings. Don't risk your weld quality with a valve that sticks or fails prematurely.

Symptoms of a Bad Solenoid:

• No Gas Flow: You pull the trigger, the wire feeds, but you get instant porosity and a erratic arc. The valve coil may be burnt out.
• Gas Won't Stop: You hear gas hissing even after the machine's post-flow cycle should have ended. Debris may be stuck in the valve, or the spring has failed.
• Inconsistent Flow: The valve opens intermittently, causing random weld defects.

Replacing your solenoid is a straightforward repair that can extend the life of your welder significantly. This 120V unit is built tough to handle the daily grind of a fabrication shop. Whether you are maintaining a fleet of machines or fixing up your personal rig, trust genuine Tweco parts to keep your arc stable and your welds clean.