Flux inside or outside capillary end feed?

[John_]

I know this is prob personal habit but when soldering which is better - flux inside or outside, i.e female end or male end?

 

[gavinwilson]

on the pipe

 

[mikegas]

The correct way is to apply the flux to the pipe not the fitting

 

[Hardy1]

flux goes onto the pipe not the fitting..

 

[PlumbBobBob]

on the pipe so male end

 

[Best]

Yes, - on the pipe, & then you won't fill inside of joint with flux, but you can put a light film of flux inside fitting if you want. Turn the fitting or pipe when pushing together, if you can, to aid even spread of flux.

 

[Gray0689]

I'm on pipe and fitting

 

[Best]

I'm on pipe and fitting

Me also, to be honest. Flux will melt & go inside pipe anyhow, no matter what you do.

 

[John_]

Thx guys, had a debate with an engineer who flux inside which I thought a bit unusual but now I know who's right. Initially I thought personal taste but now I know which side I am on. Thx.

 

[Roger Welton]

Outside pipe on smaller pipe, 28 and above both. Not quite sure why but have always done this.

 

[cdodds2004]

i was taught by a old school guy who made me clean both pipe and fitting with wirewool and flux both pipe and fitting also. very very rare i get a poor joint or even a untidy joint, i use "no korode" flux i think its the same as the old uni flux, very sticky but good and doesnt rott pipe like the other stuff can, takes a little longer to clean fittings but its the way i was taught and im swear by it! but its all personal really people have there own methods for everything, i always give a system a good flush though due to fluxing inside the fittings

 

[Guest123]

Flux should go inside the fitting and on the pipe. Twist the pipe as it's inserted into the fitting to distribute the flux evenly and use flux sparingly.

Pegler Yorkshire recommend this for Endex and Yorkshire soldered capillary fittings.

 

[SafeGasInstall]

which end of the flux brush do you all use to apply the flux ?

the hairy end or the round handle ?

 

[Guest123]

which end of the flux brush do you all use to apply the flux ?

the hairy end or the round handle ?

The middle bit.

 

[tamz]

Pipe and fitting for me. Always have done but "they" say you should just do the pipe to prevent flux getting into the pipe. This is fine in theory but as said it gets in anyway. Just don't spread it on with a trowel.
Your choice of flux may be more important than where you put it.

 

[Roger Welton]

which end of the flux brush do you all use to apply the flux ?

the hairy end or the round handle ?

Brush? i use my tounge

 

[SafeGasInstall]

there is not mid position available on this make "flux brush" , its two way tool

 

[tamz]

which end of the flux brush do you all use to apply the flux ?

the hairy end or the round handle ?

Never used a flux brush ....... well i have and binned it/them. They apply far to much for my liking. Fingers (not really recommended) or the end of the solder for half inch and smaller. Never even as much as a nip in a cut but i'm probably immune to laco.

 

[Best]

And don't forget to keep adding a little flux, as you solder, by dipping end of solder wire in flux.

 

[tamz]

I do that too :lol:

 

[SafeGasInstall]

solder which end of the pipe/fitting you apply it , on the side where your flame is or opposite ?

 

[SafeGasInstall]

I do that too :lol:

i do only when there is water in the pipe

 

[Guest123]

And never solder a JG Speedfit straight as the fumes will kill ya.

 

[tamz]

I usually start swearing if i've got some water there.

 

[SafeGasInstall]

me toooooooooooooooooooo and sent steve to the van for the wet vac , even i know it will not take i still end up waisting 5 min trying before i sent him for wet vac

 

[Best]

solder which end of the pipe/fitting you apply it , on the side where your flame is or opposite ?

Close to flame, but if hot enough, opposite side also, but as I am sure you know well, not necessary to solder all round, as heat & flux will do the job in a caplilary fitting.

 

[Guest123]

I usually start swearing if i've got some water there.

Me too. Stuck half my piece (sandwich to non Jocks) down a inch main today. The whole of Alloa could here me shouting and screaming not nice things at a bit of pipe. The joys of plumbing.

 

[SafeGasInstall]

i apply opposite site and it does matter as to make sure that fitting/pipe is up to temp as otherwise if fitting/pipe is not fully visible it might not go all the way round

 

[John_]

Also, is it correct to solder with the flame or take the flame away when the pipe is hot enough then apply the solder and let it do the business?

 

[Best]

i apply opposite site and it does matter as to make sure that fitting/pipe is up to temp as otherwise if fitting/pipe is not fully visible it might not go all the way round

Yes, agree, if solder flows at back of fitting, opposite side to flame, then you know fitting is heated & thus soldered fully.