Central heating - Soldered joints

[BLUEFUNNEL]

Hello to all.

Since my central heating pump, in a closed system, shattered internally and blocked the flow of water, I have had endless problems with leaks. I have fixed most but I have one piece of right angled 3/4 inch copper pipe which is still leaking . The right angled bend uses a capillary fitting. The soldered connections are leaking.

Is there any way of repairing the soldered joints without dismantling the fittings?

I have spare capillary joints. Should I simply dismantle the existing joints and fit new capillaries.

Any suggestions would be appreciated.

Many thanks,

Jimmy

 

[gasmanstu72]

if you can be sure you have no water in the pipework and fitting, you can re-solder it, just give the outside of the joint a good helping of flux and solder as per usual.
if there is any water in the pipe / fitting it wont get hot enough and the solder wont melt / run

maybe just cut it out and replace with compression?

 

[simond]

The pump shattering won't cause leaks.

Are you sure this system has a pressure relief valve correctly rated and fitted?

 

[dilalio]

Toptip: when reworking a leaking soldered joint... Dip the end of the the solder into your flux and get a good dollop on the end before applying to the heated fitting... Then let capillary action do the rest

 

[FiremanT]

Simon is right, a shattered pump or any other fragments won't cause end feed failure. But neither would a poor or non existent PRV, assuming the joints were good in the first place.The lack of a PRV would,if anything, blow rad. valve seals or boiler seals first. IMO

The joints were likely to have been badly formed in the first place.

RE: re-blowing fittings. Don't waste your time. Dismantle and re-do. If the joint was not done properly, you will be lucky to be succesful on subsequent attempts.

I saw the previous post on the shattered pump. But did not read it. I have never heard of such a thing. Did a foreign body enter the impellors?