Extending radiator pipe

[chriselevate]

Hi,

I've got radiator feeds that I need to extend as currently they are in the way of skirting board that is being fitted tomorrow. I thought it'd be an easy job but it's proving to be troublesome!

I think it's down to the fact that the pipes (ground floor) still have water in them and I've tried to drain them out but can't get them to stop "steaming" when I try to unsolder the joints.

Basically I want to unsolder the 90 degree elbow and replace it with a straight section and then put a new 90 degree elbow on further up.

I hope these pictures help....

Any tips/tricks as I can't even get a pipe slice in the gap as it's very close to the wall.

 

[Agile]

I would use one of two techniques!

One would be to apply pressurised air to "blow" the water back.

Other would be to use 10 mm rubber tube threaded into the pipe to suck out the water.

Tony

 

[chriselevate]

Really? Just keep sucking and sucking until it's all out? Or like you say.... blow it back?

Will this be causing me the problem in not being able to heat up the joint hot enough to remove the existing fitting do you reckon?

 

[Madrab]

Yup, water in the pipe will keep the pipe cooler than the melting point of the solder.

Read here for good advice

//www.diynot.com/diy/threads/top-tips-fixes-bending-soldering-repairs-etc.134553/