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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Compression vs. push-fit fittings?
In locations where one may not want to use a hot torch (like 5cm from the
main gas pipe!), which is considered the more reliable joining method? What are the pro's/con's of each? I've used compression, but never push-fit. Talking about 15mm copper piping for hot water (rads) if that makes any difference. a |
#2
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On Tue, 12 Apr 2005 22:33:06 GMT, "al"
wrote: In locations where one may not want to use a hot torch (like 5cm from the main gas pipe!), which is considered the more reliable joining method? What are the pro's/con's of each? I've used compression, but never push-fit. Talking about 15mm copper piping for hot water (rads) if that makes any difference. Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. If you feel more comfortable with compression, then fine, but both are perfectly suitable. -- ..andy To email, substitute .nospam with .gl |
#3
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"Andy Hall" wrote in message ... On Tue, 12 Apr 2005 22:33:06 GMT, "al" wrote: In locations where one may not want to use a hot torch (like 5cm from the main gas pipe!), which is considered the more reliable joining method? What are the pro's/con's of each? I've used compression, but never push-fit. Talking about 15mm copper piping for hot water (rads) if that makes any difference. Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. ...Lord Hall informs us all with tripe ...hacksaws are used on copper pipe ...you place the saw on pipe in view ...and pull and push until it's through _________________________________________ Usenet Zone Free Binaries Usenet Server More than 120,000 groups Unlimited download http://www.usenetzone.com to open account |
#4
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"Andy Hall" wrote in message ... On Tue, 12 Apr 2005 22:33:06 GMT, "al" wrote: In locations where one may not want to use a hot torch (like 5cm from the main gas pipe!), which is considered the more reliable joining method? What are the pro's/con's of each? I've used compression, but never push-fit. Talking about 15mm copper piping for hot water (rads) if that makes any difference. Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. If you feel more comfortable with compression, then fine, but both are perfectly suitable. I've done quite a lot of plumbing in my time but not in the last few years. Am I correct in saying the push-fit variety have a rubber seal in them. What's the life expectancy of this seal, just that a compression fitting with a brass olive sounds a far more permanent solution. |
#5
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On Wed, 13 Apr 2005 12:16:40 +0100, "Fred" wrote:
I've done quite a lot of plumbing in my time but not in the last few years. Am I correct in saying the push-fit variety have a rubber seal in them. What's the life expectancy of this seal, just that a compression fitting with a brass olive sounds a far more permanent solution. There is usually an O-ring seal made from EPDM, which is a synthetic rubber. http://www.azom.com/details.asp?ArticleID=1822 Fittings manufacturers guarantee their products for a minimum of 25 years. http://www.yorkshirefittings.co.uk/d...ks/tectite.pdf -- ..andy To email, substitute .nospam with .gl |
#6
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Andy Hall wrote:
On no account use a hacksaw. This /golden rule/ was broken by our plumber (we call him "hamfist"). Over a year later we sprouted 2 leaks due to the O rings eventually failing, presumably due to nicks introduced by the burrs on the pipe ends. The rest of his work only just avoided the best bodges thread. HTH Alex. |
#7
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In article ,
Doctor Evil wrote: Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. ..Lord Hall informs us all with tripe ..hacksaws are used on copper pipe ..you place the saw on pipe in view ..and pull and push until it's through Using a proper tube cutter produces a slightly 'rolled over' end in copper tube - ideal for the smooth and damage free entry to a rubber seal. I'm surprised one of your claimed experience hasn't noticed this? Perhaps a visit to Specsavers is needed. They advertise heavily so you must know about them? -- *If a turtle doesn't have a shell, is he homeless or naked? Dave Plowman London SW To e-mail, change noise into sound. |
#8
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In article ,
AlexW wrote: On no account use a hacksaw. This /golden rule/ was broken by our plumber (we call him "hamfist"). Over a year later we sprouted 2 leaks due to the O rings eventually failing, presumably due to nicks introduced by the burrs on the pipe ends. The rest of his work only just avoided the best bodges thread. I really can't understand a pro - or anyone plumbing for money - not using the correct tube cutter. They're hardly expensive, and save time too, apart from giving the cut required. Of course bar room experts like IMM or Drivel will always think they know better. -- *A woman drove me to drink and I didn't have the decency to thank her Dave Plowman London SW To e-mail, change noise into sound. |
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On Wed, 13 Apr 2005 11:57:28 +0100, "Doctor Evil"
wrote: "Andy Hall" wrote in message .. . On Tue, 12 Apr 2005 22:33:06 GMT, "al" wrote: In locations where one may not want to use a hot torch (like 5cm from the main gas pipe!), which is considered the more reliable joining method? What are the pro's/con's of each? I've used compression, but never push-fit. Talking about 15mm copper piping for hot water (rads) if that makes any difference. Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. ..Lord Hall informs us all with tripe ..hacksaws are used on copper pipe ..you place the saw on pipe in view ..and pull and push until it's through Not reading instructions and using hacksaw with effect that the water ****es onto the floor.. BTW. What's this new "poetry" stuff? Do you see yourself as the next Andrew Motion? I know that most of what you write could be described as "motion", but this is a new departure. -- ..andy To email, substitute .nospam with .gl |
#10
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In article ,
Andy Hall wrote: BTW. What's this new "poetry" stuff? Glad you put poetry in parenthesis... Do you see yourself as the next Andrew Motion? I know that most of what you write could be described as "motion", but this is a new departure. I'd suspect a new medication. Perhaps they'll get the dose right soon. -- *Bigamy is having one wife too many - monogamy is the same Dave Plowman London SW To e-mail, change noise into sound. |
#11
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"Andy Hall" wrote in message ... On Wed, 13 Apr 2005 11:57:28 +0100, "Doctor Evil" wrote: "Andy Hall" wrote in message .. . On Tue, 12 Apr 2005 22:33:06 GMT, "al" wrote: In locations where one may not want to use a hot torch (like 5cm from the main gas pipe!), which is considered the more reliable joining method? What are the pro's/con's of each? I've used compression, but never push-fit. Talking about 15mm copper piping for hot water (rads) if that makes any difference. Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. ..Lord Hall informs us all with tripe ..hacksaws are used on copper pipe ..you place the saw on pipe in view ..and pull and push until it's through Not reading instructions and using hacksaw ...the hacksaw comes with instructions on hand ...Lord Hall is unable to understand ...how to saw copper pipe he asks ...not knowing simple DIY tasks ...One more point I will will have to say ...Lord Halls top hat gets in the way _________________________________________ Usenet Zone Free Binaries Usenet Server More than 120,000 groups Unlimited download http://www.usenetzone.com to open account |
#12
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On Wed, 13 Apr 2005 13:44:05 +0100, "Dave Plowman (News)"
wrote: In article , Doctor Evil wrote: Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. ..Lord Hall informs us all with tripe ..hacksaws are used on copper pipe ..you place the saw on pipe in view ..and pull and push until it's through Using a proper tube cutter produces a slightly 'rolled over' end in copper tube - ideal for the smooth and damage free entry to a rubber seal. I'm surprised one of your claimed experience hasn't noticed this? Perhaps a visit to Specsavers is needed. They advertise heavily so you must know about them? Being our onanist-par-excellence I would have thought that he would be a regular Specsavers customer..... :-) -- ..andy To email, substitute .nospam with .gl |
#13
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Dave Plowman (News) wrote:
In article , AlexW wrote: On no account use a hacksaw. This /golden rule/ was broken by our plumber (we call him "hamfist"). Over a year later we sprouted 2 leaks due to the O rings eventually failing, presumably due to nicks introduced by the burrs on the pipe ends. The rest of his work only just avoided the best bodges thread. I really can't understand a pro - or anyone plumbing for money - not using the correct tube cutter. They're hardly expensive, and save time too, apart from giving the cut required. aye, kopex and robocut rule. RT |
#14
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Dave Plowman (News) wrote:
In article , AlexW wrote: On no account use a hacksaw. This /golden rule/ was broken by our plumber (we call him "hamfist"). Over a year later we sprouted 2 leaks due to the O rings eventually failing, presumably due to nicks introduced by the burrs on the pipe ends. The rest of his work only just avoided the best bodges thread. I really can't understand a pro - or anyone plumbing for money - not using the correct tube cutter. They're hardly expensive, and save time too, apart from giving the cut required. Of course bar room experts like IMM or Drivel will always think they know better. It amazes me too! Hamfist, we found, was just unbeleivably lazy and shortsightedly tight. Eg. loo: Couldn't be arsed scraping a little plaster off the floor, before fitting loo, hence it wobbled until I refitted it recently. Cistern tied to plasterboard with std rawplugs. Still they were easy to pull out by hand when (as I had to refit anyway). Pan adapter a bit too short and seal fouling end of spigot, still he had plenty of mait so it didn't leak (much) ... loo blocked regularly until refitted. Also, in the kitchen he seemed unable to grasp that the waste adapter on the sink leaked. "Fixed" it 3 times, and then I had to fix it once more in a manner which actually removed said leak ... it was just a creased seal. The list goes on and on ... In the end I paid him just to keep him out of the house, his fixes had usually a negative effect. Alex. |
#15
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"Andy Hall" wrote in message ... Push fit fittings work perfectly well provided that you follow manufacturer instructions. This means that tube ends must be square and clean. If you are using plastic pipe, use the proper cutting tool. If you are using copper, then a tubing cutter. On no account use a hacksaw. If you feel more comfortable with compression, then fine, but both are perfectly suitable. I got one of the little mini-cutters for difficult places so I should get a good cut and be able to clean it up a bit with some wire wool. Which brings me to my next point .... since I'll have to join to the end of an old pipe, it sounds like I may get a more reliable join with a compression fitting. I've heard of using both PTFE tape and threadseal over the olive to help seal it up more. Hype or help? a |
#16
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On Wed, 13 Apr 2005 14:29:06 +0100, "Doctor Evil"
wrote: ..the hacksaw comes with instructions on hand ..Lord Hall is unable to understand ..how to saw copper pipe he asks ..not knowing simple DIY tasks ..One more point I will will have to say ..Lord Halls top hat gets in the way I know your source of cut and paste for this.. It's your Rupert books, isn't it? For example: To try to help the working elves, The chums go underground themselves Do you wear yellow trousers by any chance? -- ..andy To email, substitute .nospam with .gl |
#17
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"Andy Hall" wrote in message ... On Wed, 13 Apr 2005 14:29:06 +0100, "Doctor Evil" wrote: ..the hacksaw comes with instructions on hand ..Lord Hall is unable to understand ..how to saw copper pipe he asks ..not knowing simple DIY tasks ..One more point I will will have to say ..Lord Halls top hat gets in the way I know your source of cut and paste for this.. It's your Rupert books, isn't it? For example: To try to help the working elves, The chums go underground themselves Do you wear yellow trousers by any chance? LOL, but one has to ask *how* do you know, memories from childhood, reading to your child or perhaps you just have overly large ears ?!.. :~) |
#18
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On Wed, 13 Apr 2005 16:31:45 GMT, "al"
wrote: I got one of the little mini-cutters for difficult places so I should get a good cut and be able to clean it up a bit with some wire wool. Which brings me to my next point .... since I'll have to join to the end of an old pipe, it sounds like I may get a more reliable join with a compression fitting. I've heard of using both PTFE tape and threadseal over the olive to help seal it up more. Hype or help? Hi, Couple of hints he http://groups.google.co.uk/groups?q=%22pete+c%22+copper+olive&hl=en&lr=&c2cof f=1&selm=av9m31paa2d135g83gc42232qra9comou8%404ax. com&rnum=1 cheers, Pete. |
#19
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"Andy Hall" wrote in message ... On Wed, 13 Apr 2005 14:29:06 +0100, "Doctor Evil" wrote: ..the hacksaw comes with instructions on hand ..Lord Hall is unable to understand ..how to saw copper pipe he asks ..not knowing simple DIY tasks ..One more point I will have to say ..Lord Halls top hat gets in the way I know your source of cut and paste for this.. It's your Rupert books, isn't it? For example: To try to help the working elves, The chums go underground themselves Do you wear yellow trousers by any chance? ...Lord Hall he has a favourite book ...every night he has a look ...the bumper version big and set ...the size of a front doorstep ...the contents of he thinks it matters ...this large print tome is now in tatters ...from constant thumbing its ripped apart ...from gaining knowledge it did impart ...from big colour piccies he is turned on so ..."How Things Work" it lets him know ...from this book has a peep ...It's under his pillow while Lord Halls asleep ...the moral of this encyclopaedic tree ...is not to pinch books from kids under three _________________________________________ Usenet Zone Free Binaries Usenet Server More than 120,000 groups Unlimited download http://www.usenetzone.com to open account |
#20
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On Wed, 13 Apr 2005 22:02:45 +0100, ":::Jerry::::"
wrote: LOL, but one has to ask *how* do you know, memories from childhood, reading to your child or perhaps you just have overly large ears ?!.. :~) All of the above really ;-) -- ..andy To email, substitute .nospam with .gl |
#21
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"Fred" wrote in message ... I've done quite a lot of plumbing in my time but not in the last few years. Am I correct in saying the push-fit variety have a rubber seal in them. What's the life expectancy of this seal, just that a compression fitting with a brass olive sounds a far more permanent solution. With the acidity of our water here the plastic O ring lasts a lot longer than the compression joint. |
#22
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al wrote:
In locations where one may not want to use a hot torch (like 5cm from the main gas pipe!), If the pipe you're working on is 50mm away from your gas pipe then you should be able to solder it quite safely if you use a heat shield such as a glass-fibre mat to protect the gas pipe from the flame. |
#23
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"John Stumbles" wrote in message
news:ZPA7e.20608$Uc7.2430@newsfe2- If the pipe you're working on is 50mm away from your gas pipe then you should be able to solder it quite safely if you use a heat shield such as a glass-fibre mat to protect the gas pipe from the flame. With one of the pipes, it was about 20cm away - we used a heat mat draped over it just in case and tried to keep the flame in a different direction. Still not my idea of fun though! Naked flames are never a good thing around gas (it was about 60cm away from the back of the boiler too ... you wouldn't want a leak!). The other pipes were just too close - used compression fittings instead. a |
#24
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Fittings manufacturers guarantee their products for a minimum of 25
years. http://www.yorkshirefittings.co.uk/d...ks/tectite.pdf I had three serious leaks in my brand new Barratt house in just over a year, all due to plastic plumbing with push fittings. There must have been 50-100 of them in the house, what's the statistical chance that one will pop again in the next few years? Pretty high I think. If I have to use one or two on retrofits then maybe, but I don't care what Yorkshire Fittings say, personally I'd say no way in hell I'll ever use plastic plumbing with push fittings again to any serious degree. In my previous new house build (France) the plumbers arrived with rolls (rolls, not lengths) of copper pipes. Not a single connector anywhere except for three distribution points and the taps/radiators. And not a single leak in the four years we spent there. Why plumbers in this country still insist on dodgy joins every ~2m of plumbing installations in brand new houses is a mystery to me. |
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