please help me find a solenoid for my welder!

Something I forgot to mention---is the solenoid burned out, or is the gas valve bad? What does it say (brand model) right on the solenoid/ valve? You MIGHT be able to get a new solenoid from whoever made the valve.

Also, do NOT power up that solenoid unless it is installed ON the valve. AC coils will burn up if the core device is not in them.