I have two Din Valves that had been slightly damaged. Been hit just enough that my Din first stage screws in but with some difficulty. I would like a tool to screw into the valve to reset the threads. Anybody sell that tool somewhere?
Question DIN thread repairs
- Thread starter Norwegian Cave Diver
- Start date
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Robert H. Diver
Contributor
I don’t know of a specific tool for DIN valves, you might be able to find a tap and die set that matches the threads? Would probably be easier to take it into a machine shop and see what they can do for you first.
Typically, if it just slightly out of round. Screw in a stainless DIN plug and beat around the valve diameter with a deadblow hammer. Don't use a brass plug, you need something harder than the brass valve itself.
If it is bent badly enough that the din plug won't screw in, you are hosed and need a new valve.
If it is bent badly enough that the din plug won't screw in, you are hosed and need a new valve.
I would lean more toward replacing the valve.
When this happens, I don't think twice about it, I replace the valve. I don't want to have that valve behind my head with a first stage attached to this valve under pressure.
OMyMyOHellYes
Contributor
Valves are cheap. Like $40. Or I think DGX has them on special at 2 for $80. I keep a few on hand at all times, just for such occasions.
Not worth trying to screw in a reg and possibly fubbinking up those threads.
Easy and probably as cheap as trying to scrounge up a special tool... or pay a machine shop to do something. And if the threads inside a fitting are actually boogered up, then at 3,000 pounds, I REALLY don't want to be standing there when you fill that if your fix was just chasing the brass threads with a thread-cutting tap.
Not worth trying to screw in a reg and possibly fubbinking up those threads.
Easy and probably as cheap as trying to scrounge up a special tool... or pay a machine shop to do something. And if the threads inside a fitting are actually boogered up, then at 3,000 pounds, I REALLY don't want to be standing there when you fill that if your fix was just chasing the brass threads with a thread-cutting tap.
I also would not risk it. If the inner threads on the valve are somehow damaged and the valve screws in, it may not hold a seal and lead to air loss.
If it was me, I would also replace the valve.
If it was me, I would also replace the valve.
If the connector is truly "out of round," you may be s.o.l; but if it is just a minor thread damage issue, say, a sub-idiot was attempting his best to cross-thread your fancy brass; or a crew member knocked your loose regulator to the deck, while refilling tanks -- while holding his cup of coffee and a cigarette in one hand, I would suggest the "DIN Plug Orthodontist" -- specifically marketed for repairing DIN plugs, but also effective on regulators -- something that I've had in my kit for years . . .
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