Everlast 250 EXT TIG WELDER

[todmorg]

Again Todd, I have the specs on that. It is a solenoid to stop and start the water flow. I can't remember how it is designed, but I know that it works as such. Pressing and hold the select switch for more than 3 seconds actually deactivates it. You yourself said it is mounted above a plunger. It may actually stop water flow when it is deactivated for use with a air cooled torch. But its not a sensor according to the factory information I have on it.

A picture can be worth a thousand words, when I push with the knife blade, the switch contacts close.