changing fitting on copper sinktap pipes

[poppycock]

hi all, i'm after a little advice please. i'm planning on replacing my kitchen sink but the current tap pipes are soldered together. what is the best way to disconnect those soldered pipes so I can get the old sink out? see photo for an idea of the scenario:

Untitled

• poppycock
• 30 Jul 2011
• 1

the connections on the replacement sink look like this:

Untitled

• poppycock
• 30 Jul 2011
• 1

My main concern is what is the best way to disconnect / cut through the old pipes?

Would I be best to cut through the old pipes with a hacksaw (difficult to use a pipecutter in that space) at the appropriate height to accommodate the new tap pipes then clean up with wire wool and use compression fittings to plumb the new one in?

I've plumbed rads before, but never had to deal with soldered pipes, so any help on dealing with them here is appeciated.

thanks.

 

[seco services]

Not the tidiest of pipework.
If you cut your old pipework on the red lines then you'll beable to fit your isolation valves/compression valves/endfeed fitting straight on to these giving you enough pipework to play with.

cut them to low then you be stuffed as you'll be right on the solder joints.

 

[poppycock]

thanks seco.

yep, it sure is ugly under there - i take no responsibility - i inherited that pipe'work'!

I have just been contemplating cutting the taptails short and using flexi-pipe, but isolation vales are prob a better idea.

thanks again for the advice - and taking time to mark up the photo.

 

[seco services]

Be careful where you cut them as the tails are not the same diameter all the way to the taps they narrow.

 

[poppycock]

indeed. how high are iso valves? - I think I should be alright as long as they aren't longer than 3".

 

[seco services]

About 2" def not 3".

 

[poppycock]

sweet, should be all good then.

thanks for yr help.