soldering

[Fredstudio]

when soldering new copper do you wire wool the pipe if using power flow flux? also can you put too much solder on?

 

[Newboy]

Yes and yes

 

[Fredstudio]

whats the result of too much?

 

[Newboy]

Solder runs, a crappy looking joint & wasted solder.

 

[Fredstudio]

manily aesthetics then?

 

[Newboy]

Well it depends on how much you manage to get inside the fitting!

Why not just the correct amount?

 

[Fredstudio]

could you clog the pipe up?

 

[TCCHeating]

could you clog the pipe up?

Yes I suppose its possible. But more common you could end up with chunks of loose solder inside the pipes.

Makes a lovely tingling sound in a central heating system!

As a rule of thumb. Use 15mm of solder for a 15mm fitting and 22mm of solder for a 22mm fitting etc etc....

Ps. That's using standard sized solder. Not the posh thin stuff that some in the cc use just to be different

 

[Fredstudio]

15mm of solder for both joints on a 15mm elbow?

 

[BigSnoopy01]

if the fitting and the pipe is new and clean then cleaning is not really needed with powerflow but if your new to soldering then its advisable as it will run better.

 

[Fredstudio]

Would the loose solder if there was any. Get removed during the cold/ hot flush of a new central heating system install?

 

[TCCHeating]

15mm of solder for both joints on a 15mm elbow?

15mm per side

 

[Dan Robinson]

Posh solder is ace. Almost out atm.

People use far too much solder flux and heat.

My tub of Laco (far better than that Powerflow muck) is starting to solidify.