Can't get the valves off my steel tanks

[happy-diver]

 

[Canajan]

I got a couple older steel 72’s from a co worker, they had tapered threads and the shop I use refused to fill them. Even though every cylinder in storage bank has a tapered threaded valve but that’s a different story.
I had to wedge them between a curb and my car to get the valves off. I made furniture pieces out of the tanks.

 

[happy-diver]

Well with some rain washing down some leaves and curbing your wheels they don't get used for much else

 

[jellycatsdad]

If it was me, I’d find the strongest tree/telephone pole with the gnarliest ratchet straps you can find - or another way to restrain and brace the tank. Get the biggest adjustable wrench you can find and another few feet of steel pipe as a cheater bar. That should remove the valve.

Make sure it’s empty - not surface empty but totally empty. If you’re going to clean and tumble the tank, Kroil wouldn’t be a bad idea. You got galvanic corrosion between the steel cylinder and a brass valve.

 

[happy-diver]

 

[Stoo]

I'm going to stop by the shop in the morning. I guess I will offer to buy a BIG wrench ? To be honest the shop really didn't want me to dive my own gear from the beginning. Sometimes I miss Florida...

Or a length of steel pipe that will fit over the handle on the current wrench... cheaper than a big wrench. My guess is that you have some corrosion there, or possible electrolysis. Kinda why you don't want to leave them sitting for two years +

 

[BRT]

Or a length of steel pipe that will fit over the handle on the current wrench... cheaper than a big wrench. My guess is that you have some corrosion there, or possible electrolysis. Kinda why you don't want to leave them sitting for two years +

Kinda why you want some lube on the threads and o-ring.