Okay.
So.
The situation is we found out why the original valve failed. The solenoid that closes the pilot light supply when it goes out had an open winding. I was able to fish the broken wire out and repair it.
Bad news: The existence of the solenoid only happened after the valve was dismantled. You cannot reuse a valve after it has been taken apart, though ironically the solenoid unscrews without having to do so. Lesson learned.
Gooder news: We found two replacement valves. They are not PowerPile valves like the original valve but when I rewired the boilers I made it so they could easily be converted to 24V if it was ever needed, so we have an option to use a different valve if its cheaper.. We also found the proper natural gas rated pipe tape I was looking for.
Badderest news: While installing the new valves one of the pipe wrenches slipped and I broke the pipe that enters the burner. You can just put new threads on it but the rest of the pipe is stuck in the elbow, so it was GAME OVER.
My suggestion to everyone is unless you specifically need to be at the space, avoid it until the end of the weekend. We are out of time to repair the boiler and the building's plumbing has extensively frozen.
Edited: DO NOT apply 24v to this replacement valve. Don't mess with it at all. It's capped off and it's safe where it is. Because the wrong solenoid is currently installed on it you'll blow it up.