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Forum Index : Other Stuff : Spilting water to make a hot flame

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Godoh
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Joined: 26/09/2020
Location: Australia
Posts: 524

Posted: 07:46am 27 Jun 2025

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Hi Bryan, well it looks like you have the system working.
Do you have any idea how much gas pressure you will need to have in the bottles to actually do welding/cutting.
I know that the bottles have quite a bit of pressure in them when using acetylene and oxygen for welding, brazing etc, but just how much is not enough is a mystery. Especially using Hydrogen gas.
Do you have to use Oxygen as well as the Hydrogen gas for it to work?
It is great to see how things are going,
pete

Bryan1

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Joined: 22/02/2006
Location: Australia
Posts: 1424

Posted: 08:03am 27 Jun 2025

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Well Pete it all depends on how much pressure that fridge pump can do so it will be interesting to see how it goes and I may have to machine up a 5 stage pump to get the pressure up.

For a bit of fun I put the acetylene reg on and made sure it was totally closed then when I opened the bottle I could hear a pressure release but nothing on the gauge registered. The E sized bottle is pretty big for what I'm doing and it will take quite a few tubes to get enough to try the oxy torch it is worth persisting.

I am going upto the bridge in the morning to see the BOC bloke as I do need a bottle connection to decanter the Oxy.

Now the hydrogen tube was totally sucked out and laying flat and the power supply is set to 10 volts over night so should see some movement in the morning.

So yes with using hydrogen Oxygen does need to be used to trim the flame and I do have a full E sized bottle here where I'm using LPG with it for silver soldering.

Regards Bryan

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