are  1/2" to 15m/m and 3/4" to 22m/m copper pipe adapters available, I have 
tried B&Q warehouse and Wickes without any luck.
Gordon

In an earlier contribution to this discussion,
Gordon   wrote:


> are  1/2" to 15m/m and 3/4" to 22m/m copper pipe adapters available,
> I have tried B&Q warehouse and Wickes without any luck.
> Gordon


1/2" and 15mm pipes are so similar that you can use 15mm compression or
solder fittings on 1/2" pipe without any problems.

22mm pipe is *slightly* bigger than 3/4". You can use 22mm compression
fittings on 3/4" pipe with special olives - with a slightly smaller ID. You
can get these at a decent PM but maybe not at the sheds.

If you want to use solder fittings to join 22mm and 3/4" pipe, you need
special fittings whose two ends are a slightly different size. Again, you
can get them from a PM - or probably on-line from the likes of BES.
-- 
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.

Set Square wrote:


> If you want to use solder fittings to join 22mm and 3/4" pipe, you need
> special fittings whose two ends are a slightly different size. Again, you
> can get them from a PM - or probably on-line from the likes of BES.


Or if needs must, run a pipe cutter round a 22mm fitting once or 
twice... not enough to cut into it, but enough to put a dent into the 
circumferance and reduce the diameter enough to solder it! (DAMHIK)

-- 
Cheers,

John.

/=================================================================\
|          Internode Ltd -  http://www.internode.co.uk            |
|-----------------------------------------------------------------|
|        John Rumm - john(at)internode(dot)co(dot)uk              |
\=================================================================/

In article , Set Square
<URL:mailto:diy@privacy.net> wrote:


> 1/2" and 15mm pipes are so similar that you can use 15mm compression or
> solder fittings on 1/2" pipe without any problems.


Compression yes, but I have experienced the odd failure when using 13mm
fittings on 12.7mm (1/2") pipe.


-- 
AJL

"Andy Luckman (AJL Electronics)"  wrote in message 
news:ant3107310b0dVpW@office.ajlelectronics.co.uk...

> In article , Set Square
> <URL:mailto:diy@privacy.net> wrote:
>
>> 1/2" and 15mm pipes are so similar that you can use 15mm compression or
>> solder fittings on 1/2" pipe without any problems.
>
> Compression yes, but I have experienced the odd failure when using 13mm
> fittings on 12.7mm (1/2") pipe.


Indeed - if SSq had left off "without any problems" then OK. I have found it 
necessary on many occasions to abrade (with steel wool) 1/2" pipe down quite 
a lot to get 15mm solder fittings on. They will go eventually though. If 
they are too tight a fit then the solder won't flow properly and the joint 
will be suspect for ever more so it's worth working them to an easy fit.

Bob Mannix

In an earlier contribution to this discussion,
Andy Luckman (AJL Electronics)   wrote:


> In article , Set Square
> <URL:mailto:diy@privacy.net> wrote:
>
>> 1/2" and 15mm pipes are so similar that you can use 15mm compression
>> or solder fittings on 1/2" pipe without any problems.
>
> Compression yes, but I have experienced the odd failure when using
> 13mm fittings on 12.7mm (1/2") pipe.


I'm not sure which pipes you are talking about. Half inch pipe isn't 12.7mm.
The 'half-inch' refers to the nominal bore, so that the OD is larger than
this - and very close to that of 15mm (not 13mm) pipe.
-- 
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.

On Wed, 31 Aug 2005 08:41:31 +0100, "Andy Luckman (AJL Electronics)"
 wrote:

| In article , Set Square
| <URL:mailto:diy@privacy.net> wrote:
| 
| > 1/2" and 15mm pipes are so similar that you can use 15mm compression or
| > solder fittings on 1/2" pipe without any problems.
| 
| Compression yes, but I have experienced the odd failure when using 13mm
| fittings on 12.7mm (1/2") pipe.

Yorkshire and other soldered fittings *no*. 
There used it be special soldered fittings but I doubt they sell them any
more.
Always use compression fittings to join imperial to metric.

-- 
Dave Fawthrop <dave hyphenologist co uk> 
"Intelligent Design?" my knees say *not*.
"Intelligent Design?" my back says *not*.

"Dave Fawthrop"  wrote in message 
news:4ctah15b562cha32od4uss7ue0lec0vvb3@4ax.com...

> On Wed, 31 Aug 2005 08:41:31 +0100, "Andy Luckman (AJL Electronics)"
>  wrote:
>
> | In article , Set Square
> | <URL:mailto:diy@privacy.net> wrote:
> |
> | > 1/2" and 15mm pipes are so similar that you can use 15mm compression 
> or
> | > solder fittings on 1/2" pipe without any problems.
> |
> | Compression yes, but I have experienced the odd failure when using 13mm
> | fittings on 12.7mm (1/2") pipe.
>
> Yorkshire and other soldered fittings *no*.


Too harsh, they (15mm fitting onto 1/2" pipe that is) will go with a bit of 
effort and quite successfully. Most of my radiators are fitted like this 
(1/2" installarion converted to 15mm then onto rad).


> There used it be special soldered fittings but I doubt they sell them any
> more.


Yes I bought some not long ago, you can still get them I believe. The 22mm 
to 3/4" ones are easier to find (as you can't do without) but you can still 
get the small ones, I believe.


> Always use compression fittings to join imperial to metric.


Easier but not better (but that's not an imperial metric thing!)

Bob Mannix

In article ,
   Dave Fawthrop  wrote:

> Yorkshire and other soldered fittings *no*. 
> There used it be special soldered fittings but I doubt they sell them any
> more.
> Always use compression fittings to join imperial to metric.


Last time I tried, I found end feed 1/2 - 15mm and 3/4 - 22mm adaptors at
my local PM.

-- 
*The colder the X-ray table, the more of your body is required on it *

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.

In article , Set Square
<URL:mailto:diy@privacy.net> wrote:


> 
> I'm not sure which pipes you are talking about. Half inch pipe isn't 12.7mm.
> The 'half-inch' refers to the nominal bore, so that the OD is larger than
> this - and very close to that of 15mm (not 13mm) pipe.


Yes sorry, I'm in pratt mode.

I have had failures when using 15mm couplings on older 1/2" pipe. I now only
use new pipe for everything and have had no failures at all.

SWMBO bought a mixer tap from Ebay. Nice bit of kit. Then you notice French
markings for Froid et Chaud. Ne problem, mais. . . 

Apparently the French go in for 12mm couplings and flexible hoses the size
of a pencil. I managed to get some adapters from Plumb Centre and it is all
OK apart from the hot flow, which is slower than I would like.

-- 
AJL

"Gordon"  wrote in message 
news:w_KdnZ2dnZ0gLer7nZ2dnZxTid6dnZ2dRVnypp2dnZ0@pipex.net...

> are  1/2" to 15m/m and 3/4" to 22m/m copper pipe adapters available, I 
> have tried B&Q warehouse and Wickes without any luck.
> Gordon

www.bes.co.uk sell end feed 15mm to 1/2" for 21p or solder ring for 1.50 
odd. Also 3/4" to 22mm as well. Last one I got from Jayhard (when they 
existed) a couple of years ago and when I found I was one short on a Sunday, 
from Homebase of all places for a rip of cost.