Bench tested the stuck valve (just to see what happens)
Assumed it was still stuck open, removed the orifice--you can see the valve mechanisms inside--seem nice and shiny, clean.
Poured some mineral spirits down the inlet, nothing came out.
Put 12v to both pos wires at once and to the two green wires bolted together to the valve body. Loud click, remove 12v click, lots of clicking. You can see things moving in there.
Tried to pour some spirits in with the 12v power on---it came out the orifice end so it is open with 12v power on, as it should be.
Took both green wires off and put power to each one at a time--clicking with either one.
CONCLUSIONS
1. It was stuck open, so I must have banged it or whatever removing it and after that.
2. It works now and both solenoids are working.
3. Yes you can bench test a gas valve
4. I would not trust this one, but could use it as a temporary field repair spare, doing a smell test each time before lighting the WH so not to have a surprise delayed ignition event (explosion)
