Flux

[greemyamochop]

My apprentice was told in college to put it in the fitting only

 

[Biggles..]

Pipe only,any excess comes to the rim of the fitting,no excess is left in the pipe and fitting when soldered.Used to be a fail on the gas exam if you fluxed the fitting.

Nordio,the colleges arent wrong,just you.

 

[Happyplumber]

My apprentice was told in college to put it in the fitting only

Thats why they always say those that can do and those that cant teach, flux the pipe and put into the fitting then slight twist and off you go

Imagine with your apprentices lecturers theory trying to flux 8mm fittings,you would need to borrow brush from the missus make up kit not the average flux brush

 

[greemyamochop]

I know thats what I showed him, his college told him that its easier in the fitting and the flux is soluble in water so makes no difference.

At least he questioned it!!

 

[Biggles..]

the flux is soluble in water so makes no difference.

i tend to try to avoid putting water through gas pipes.

 

[greemyamochop]

Its a good way to test integrity for first fix

Which ive seen twice!!!!!

They also said id taught him to solder too neatly because they couldnt see the solder on the pipe or fitting then it would leak???!?!?!!?

 

[mickyg]

Yes the fitting also . Most important.
Joint integrity will be compromised otherwise.
As also advised by the manufacturers , the CDA and the UK copper board.
If coleges are teaching otherwise then they are obviously wrong.

don't put it in the fitting. Forget anything you read, its common sense.
How in gods name does it affect joint integrity?? All it does it affect flow, fill pipes with corrosive flux residues, and I've even seen the solder trac into the pipe causing a permanent restriction.

 

[Biggles..]

Its a good way to test integrity for first fix

Which ive seen twice!!!!!

They also said id taught him to solder too neatly because they couldnt see the solder on the pipe or fitting then it would leak???!?!?!!?

15 mm pipe needs 15mm of standard guage solder to be a succesfull joint,same for all the sizes 22 needs 22mm etc.

yorkshires only require heat.

we used to be allowed no more than a 2mm mark round the outside of the fitting,no drip no nothing.The only thing not taught nowadays seems to be to wipe your fitting after,nothing worse than pigeon **** down a pipe or fitting or a great pointy spike under a fitting just ready to catch your arm as you brush past.

 

[Nordio]

Pipe only,any excess comes to the rim of the fitting,no excess is left in the pipe and fitting when soldered.Used to be a fail on the gas exam if you fluxed the fitting.
Nordio,the colleges arent wrong,just you.

Nordio is not wrong.
Have a look at what the manufacturers recommend and also read what those publications say.
Obviously gas trainers are ignoring this advice.
There's no more guarantee of flux not entering the tube by not fluxing the fitting than by following the advise given in those publications.
If you only flux the tube then you have no gurantee of coating the fitting with a light film of flux which is important and joint integrity will be compromised.
"Twisting" the tube is extremely bad practise IMO as not every situation allows it.

 

[mickyg]

Have a look at what the manufacturers recommend and also read what those publications say.

"Twisting" the tube is extremely bad practise IMO as not every situation allows it.

From the Uk Copperboard- installation tips, jointing-capillary

"Twist the fitting on to the tube to
ensure an even coat of flux in the joint
and make sure that the tube enters to
the full depth of the socket."

So you are ignoring they're advice aswell. Are you an actual plumber or just another googler?

 

[Happyplumber]

Micky i think Nordio is another one of the new generation of diy professional google generation of plumbers,here to tell us what we have been doing for as long as i can remember is totally wrong

The copper board will be wrong too,because some numpty on google says so,according to him you must put fittings and tube with flux on it and then make sure it never moves ,never mind twisiting or turning the fitting to the exact angle that is required because this is totally wrong according to the book of Nordio !!!!

 

[Nordio]

I'm a car/lorry mechanic.
Yes it does say "twist" the fitting unto the tube and yes I would ignore that part of their advice. For two reason's...
1 - Certain practial installation situations will not allow twisting of the tube or fitting.
2 - Because it is not necessary.

It's common sense at the end of the day. Any video I have seen on U tube show people lashing on copious amounts of flux which is not necessary either and I suspect most plumbers do the same.
Btw I don't need google as I have the UK copper board publication sitting on my desk in front of me as I type this.

 

[Happyplumber]

Ah ok there is nothing more to say,how can one argue the fine art of plumbing,work done by Artisans from the time of the Romans with a GREASE MONKEY!!!!

 

[kirkgas]

Flux should always be applied to both fitting and tube!A light film is best practise with a small artists brush with a synthetic filament. You end up with a dodgy joint otherwise.

sorry but whoever taught you that was not a tradesman, I have never put flux in a fitting and never have leaks

 

[greemyamochop]

Ive got a haynes manual in front of me, that make a mechanic???