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Post by DIYDafty on Aug 19, 2019 18:15:42 GMT
So there was I was about to merrily flux up a solder ring connector to a CH pipe under a gas pipe. Back of my mind was telling me "its ok its a copper pipe" which is normally true.
Anyway I didn't have time to post and it wasn't difficult to make my join further up pipe away from the gas so I did just that.
But begs the question, how much can you heat a gas pipe up. Presumably there's no oxygen in its pipe so don't see how it would explode not that I wanted to risk it !
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Post by tomplum on Aug 19, 2019 18:30:38 GMT
if you keep the heat on the pipe you are soldering, it will not affect the nearby gas pipe, It may get warm/hot but, not enough to cause a problem,
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Post by crowsfoot on Aug 20, 2019 6:30:02 GMT
When I was an apprentice I was happily soldering some joints on hot and cold water pipes right next to a gas pipe (all copper) when an older plumber said "You want to be careful soldering near that gas pipe, this natural gas can be rum stuff"! Well, it totally unnerved me and I got ready for a seemingly inevitable gas explosion and the end of my life (I just turned the heat up on the blow lamp to end it all quickly  ); anyway the solder soon ran on the H&C pipes and I completed the joint successfully (quickly turning off the blow lamp with great relief)  ! I can't recall a situation were I've had to do this since. As far as I now know natural gas is not effected by extremes of indirect heat even if you gave it so much heat it melted the solder I don't think the gas would leak out of it and catch fire. These days it's a wonder that there's no gas safe regulation been made regarding this. Like, Only a gas safe engineer is allowed to solder fittings if there's a gas supply in the property!!! I'd better stop now, or else gassafe'll be getting ideas  Good post DD. |
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Post by cluelesskarl on Aug 20, 2019 18:31:48 GMT
Loved the idea you turned the heat up!! Please don't give the gas safe ideas. I don't have a ticket for lighting up a fag! 
Edit!! Wrongly clicked like on my own post...   |
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Post by DIYDafty on Aug 20, 2019 20:52:17 GMT
I feel an experiment coming on.
Inflate 1M of 15mm copper tube with natural gas pressurized and then sealed to the same pressure of a uk domestic installation (around 20mb ?).
So you're holding a tube of pressurized gas, with end stops at both ends definitely not connected to the supply. God knows how you would do that.
Then take said pipe out to the garden where you put a blow torch directly on it and walk away - get it red. You could even use your plate vise to help you !
If it doesn't explode, then let it cool down and somehow prove it still has gas in it.
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Post by tomplum on Aug 20, 2019 20:57:46 GMT
I except that challange dafty, and I'll do it to the extreme, i'll use push fit end caps with a soldered joint along the copper lenght, only here in the brewcabin will such experiments take place, free admission, free parking and free beer,  |
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Post by cluelesskarl on Aug 20, 2019 21:06:57 GMT
I like the sound of all of those Tom! |
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Post by DIYDafty on Aug 20, 2019 22:29:21 GMT
Superb !!
Look forward to that !
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Post by crowsfoot on Aug 21, 2019 6:21:51 GMT
I never advised heating a live gas pipe so much that the solder runs. I was just saying it should not cause any arm even if you did by accident (I think) ! Keep your flame away from the gas pipe as much as possible (if you can't avoid it altogether) is my advise. "Be careful with that natural gas it can be rum stuff"!!! |
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); anyway the solder soon ran on the H&C pipes and I completed the joint successfully (quickly turning off the blow lamp with great relief) 
!
