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Post by makz84 on Dec 8, 2018 16:05:39 GMT
Wanting to extend my stopcock to a more convenient place behind a cupboard 20cm away.. my existing pipe is like a silver colour not copper . I've researched a bit and possibly it is galvanised steel I am still not entirely sure.. question is can I use 15mm straight brass coupler
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Post by tomplum on Dec 8, 2018 16:10:34 GMT
galvanized is not unheard of but highly unlikely, how old is the house ? try a magnet on it, if it attracts to it, it is metal/steel, it could by plastic with a protective foil wrapping, can you show us a photo ?
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Post by makz84 on Dec 8, 2018 16:16:04 GMT
How is it I add a picture I am am not sure howits done is it better to get the app..
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Post by endfeed on Dec 8, 2018 16:17:32 GMT
Wonder if it's truwell pipe?
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Post by makz84 on Dec 8, 2018 16:21:41 GMT
It's silver .. a plumber came out and said it's old pipe and a 15x15 coupler wouldn't work because of size difference something about an old to new connector . That's how I found your video on YouTube because I have managed to use 15mm service valves on similar pipes in bathroom... the house is like 1930 40s
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Post by makz84 on Dec 8, 2018 16:27:04 GMT
Would like to lengthen this pipe with the stop cock attached
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Post by tomplum on Dec 8, 2018 17:46:29 GMT
I think thats copper mate, although it might be stainless, a compression fitting will fit either,
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Post by tomplum on Dec 8, 2018 17:50:06 GMT
the other plumber might have meant it was 1/2 inch, that will fit in a metric coupling but might need filling and forcing, but it will fit,  |
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Post by makz84 on Dec 8, 2018 17:58:07 GMT
I was leaning towards that myself. Started reading about reactions between galvanised steel and copper and corrosion and kinda backed out.. I'll be using it on my mains before the stopcock just to lengthen the pipe I'll keep the old pipework with the stopcock and drain on.. thanks for the reply I am familiar with some aspects of plumbing but have never came across this pipe before. Thanks for the help.
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Post by tomplum on Dec 8, 2018 18:02:27 GMT
you're most welcome, |
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Post by Deleted on Dec 8, 2018 18:26:00 GMT
I was thinking it was copper too but zipped up my mouth in case I was wrong (as a DIYer too). I thought you could also get imperial olives (few pennies on ebay) but from what Tom says not strictly necessary (although might make the job a bit easier for the inexperienced?)
P.S. If you clean a small section of pipe with an abrasive pad (or wire wool if u have it) it should shine up copper-coloured pretty quick.
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Post by tomplum on Dec 8, 2018 19:22:52 GMT
you can get imperial cone for 3/4 but not 1/2, there is a slight differance in 15mm and 1/2 but we usually get over this with a file or hammer, Some of the old 1/2 was what we called council copper, because the councils used it because it had thicker walls and made difficult for us plumbers, we always won, there is never an occastion when A plumber says " I can't do that" , there is always a way,, |
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Post by woodbine66 on Dec 10, 2018 9:55:41 GMT
Definitely looks like copper from here. Wonder if any silver colour is solder that's been dripped on the pipe over the years. Looks like there is some on the pipe immediately to the right of stop tap.
But then again, it may just be the camera. bMaM72ureaAMEVc6b1_1 camera |
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Post by endfeed on Dec 10, 2018 21:18:41 GMT
The pipe above it looks like the dreaded truwell to me,so maybe the bottom one is😮. If it is,it will be steel under the coating and will rot/rust in a compression fitting when it's cut. Might be best to carry the pipe on from the stop tap where the cut should be coated. Best bet is to rip the lot out😱😱😱😱😱
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Post by joinerjohn on Dec 11, 2018 14:07:35 GMT
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