imperial to metric pipe connection

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Re: imperial to metric pipe connection

Postby Tony » Wed Aug 29, 2012 10:05 pm

Depends on the connectors you are using. Some of the cheaper 15mm plastic connectors tend to weep when connected to half inch copper. The more expensive (such as Guest) are generally better.

No you don't need pipe inserts for connecting to copper pipe - the inserts are just to stiffen the plastic pipe.

I hope this helps.
Tony
 
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Joined: Mon Oct 29, 2007 3:40 pm

Re: imperial to metric pipe connection

Postby Tony » Sat Sep 01, 2012 9:26 pm

As you say, I think they are being ultra cautious, they are saying the 'proper' way rather than 'what you can get away with'.

I wouldn't suggest using emery paper even with an adaptor as it would result in a fairly rough surface, you would get away with it using copper fittings.

I'd probably go with cleaning off the paint, using a copper Yorkshire fitting (or brass compression)then use 15mm copper for the first length and then switch to using plastic connectors.

Good luck.
Tony
 
Posts: 21
Joined: Mon Oct 29, 2007 3:40 pm

Re: imperial to metric pipe connection

Postby Tony » Tue Sep 04, 2012 9:14 pm

Sorry, no I meant solder or compression.
Tony
 
Posts: 21
Joined: Mon Oct 29, 2007 3:40 pm

Re: imperial to metric pipe connection

Postby Tony » Sun Sep 09, 2012 10:19 pm

It depends what you mean by 'auto pipe cutters' - it has different meanings with different manufacturers - I take it you mean a small handheld cutter something like http://www.screwfix.com/p/monument-tool ... 15mm/12468 - rather than the VERY expensive powered auto cutter. Yes, I'd go with the screwfix example type - you need a fairly strong wrist as you can't get much purchase on that type but it does get into tight areas.

Again the problem is what people call things ! To me, a 'stop end' is usually a solder part which seals the end of a pipe - i.e. http://www.screwfix.com/p/solder-ring-s ... of-2/39404.
Whereas a blank 'blank cap nut' is a screw cap, with a washer, which blanks off a compression joint - like http://www.amazon.co.uk/gp/product/B005 ... B00749YJP2
IE, a 'stop end' is permanent while a 'blank cap nut' is not.

I'd have no worries about reusing compression tees and elbows with new olives - just check that the threads and where the olive sits in the main body and under the nut are undamaged and clean - they usually are OK but it's better to check before you re-use them. Even if the old ones are 1/2 inch, they should be OK with 15mm.

Good luck.
Tony
 
Posts: 21
Joined: Mon Oct 29, 2007 3:40 pm


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