working on 54mm copper pipe

[roonfish]

Hi all, im after some advise. I need to replace a small section of 54mm pipe. The pipe is part of a hot water loop from the boilers. I have been seeing on forums that some people say use standard solder as you would for smaller pipes and others saying to braze the joints with high content silver sticks.

What are the pros and cons between the 2 methods? Would standard solder not be up to the job using Map gas and a decent torch

Thanks for your help

 

[Scott_D]

You can braze or solder 54mm. Also press fit or compression.
Braze requires silver solder rods and oxy-acetylene kit.

 

[markfxy]

just soft solder it, braze or silver solder is only required for higher temperatures

 

[roonfish]

Hi mark. When you say high temps. Exceeding what temp for silver solder?

 

[SJB]

Solder it, might need to get two torches on it though

 

[turnpin]

Soft solder with mapp gas will be fine...regards Turnpinunk:

 

[Alanc]

Hire a crimper and fittings

 

[Whyme]

soft solder just remember to keep working your blowlamp all the way round constantly.

 

[IDCHAPPY]

or use a 9kg bottle and a big head to get plenty of heat into the fitting. If using compression fitting then its 24" stillsons to give it a good nip up

 

[cr0ft]

I've soldered 42mm with a normal Rothenberger Superfire torch before and MAPP gas. I can't imagine 54mm being any different. Just keep moving the flame round the fitting. It will still get the copper hotter, you just need to solder one bit at a time if that makes sense.