Blow torch safety

[dazplum]

Hi all, when you sense there is only a little gas left in your mapp or propane bottles, is it best to just let the gas burn off, or can this cause light back down the nozzle and cause the cylinder to explode?
Or do you just wait until the pressure is low and replace the cylinder?

many thanks

 

[Killy Bing]

I just use those bottles to make Crème brûlée......

 

[tamz]

I'd wait for it to explode. It might brighten up a dull day :smile:

 

[Killy Bing]

I'd wait for it to explode. It might brighten up a dull day :smile:

Decent rifle makes them go boom just fire as far away as you can, i really cannot stress how much don't try it with a shotgun *rubs ears*

 

[Dotty]

had an apprentice once wanted to strap 4 of them together to throw on a fire and see what happens........

He stayed in the van a lot.......

 

[Killy Bing]

had an apprentice once wanted to strap 4 of them together to throw on a fire and see what happens........

He stayed in the van a lot.......

So how long after this did you qualify?

 

[Dotty]

about a week, it was one of them 'Plumber in a box' courses.

 

[Keefy]

I had one run out on me the other day and even though I let go of the trigger on my Superfire 2 it remained burning off what dregs were left. Because I was outside in the sun I didn't realise there was a flame still there, I felt the heat first, tried to fire it up properly to burn the rest off but just got the same short, silent flame until it died altogether. No bang.

 

[dazplum]

Keefy thats interesting too know.
I appreciate the banter guys, but what is the safest method when low on a gas cylinder?:devil:

 

[Dotty]

Burn it off.

 

[plumber0808]

I use it until it can't be used anymore then chuck it in the bin, then move on to more pressing matters

 

[Resolute]

Don't all blow torches have an air gap between flame and cylinder to provide the correct air/gas ratio? This same gap would also stop the flame searching in towards the gas bottle.

 

[dazplum]

Thanks guys, I really do not know.
Burn it off? air gaps?

 

[Resolute]

It'll be fine. Worse thing about the gas running out is having to fetch another bottle from the van when you've only got one more joint to make!

 

[AWheating]

its unlikely a flame will get near a bottles valve as there wont be enough oxgyen at this point.

You can get a tool to remove the fill/relief valve on the bottles so it can be disposed of as normal waste or given to the scrap man.

Rothenberger Gas Cartridge Recycling Vent Valve Key

 

[dontknowitall]

On a side note, my wife kept her horse at a local farm.

The farmer returned a month or so ago with a huge smile on his face and was pleased as punch as he told her about his afternoon.

"Oi've just been down to the fields today and pumped propane and oxygen into the mole runs. Then I put a match to it. You should have seen the explosions. Looks like the Sommes down there now!!!"

 

[Killy Bing]

On a side note, my wife kept her horse at a local farm.

The farmer returned a month or so ago with a huge smile on his face and was pleased as punch as he told her about his afternoon.

"Oi've just been down to the fields today and pumped propane and oxygen into the mole runs. Then I put a match to it. You should have seen the explosions. Looks like the Sommes down there now!!!"

I think i know what im doing for fun this weekend!

 

[on31ll]

On a side note, my wife kept her horse at a local farm.

The farmer returned a month or so ago with a huge smile on his face and was pleased as punch as he told her about his afternoon.

"Oi've just been down to the fields today and pumped propane and oxygen into the mole runs. Then I put a match to it. You should have seen the explosions. Looks like the Sommes down there now!!!"

big in america that ! they make a family day out of it !

 

[on31ll]

had an apprentice once wanted to strap 4 of them together to throw on a fire and see what happens........

He stayed in the van a lot.......

why didnt u let him try ?

 

[Dannypipe]

They do seem to last a long time don't they. There's a lot of fire in such a little can.

Don't worry about them exploding when empty. When they're empty, there's no gas left in the can to explode. They just fizzle out!

 

[markfxy]

just use it till it runs out hows it gonna explode if its run out of gas??

 

[helpsy]

its unlikely a flame will get near a bottles valve as there wont be enough oxgyen at this point.

You can get a tool to remove the fill/relief valve on the bottles so it can be disposed of as normal waste or given to the scrap man.

Rothenberger Gas Cartridge Recycling Vent Valve Key

It's called an angle grinder isn't it ! ;-0 Lol
Dont try this at home kids!!!!

 

[Dannypipe]

I don't bother recycling mine, they just go in the skip when they're done!

 

[Killy Bing]

Just a little side note.
there is gas left in the can unless you upen the vent on the bottom.

just not enough pressure to force it out with a torch.

when heated when"empty" the pressure goes up and you get a boom of a presurised cylinder + a flash fire fromthe remaining lpg

 

[helpsy]

Maybe you should go on Mythbusters!!!!!