Controlling TIG gas solenoid on Miller XMT

Hello all,

I have a Miller XMT 304 and a TIG torch without a gas valve. I've also got a solenoid valve that I'd like use to control gas automatically.

Is it right that there's no direct way to run the solenoid valve off this welder? (At least I can't find anything obvious...)

My alternate idea is to build an auxillary electronic circuit that watches the voltage across the contactor switch (pins A and B in the

And, heck, might as well throw in a couple more timers to make a TIG pulser while I'm in the neighborhood. ;-)

So, before I do all that, is there an easy solution I'm overlooking?

Thanks,

Tim