Compression fitting question

[dontknowitall]

LOL - it's the way we tell 'em!!!

(For the record, (I'm sure I've said this earlier but in case I didn't) on new fittings I don't use ptfe tape (unless it's seeping after a couple of testings). I only use the compound on the thread and never on the pipe or olive.)

I don't like old paste or using the compound but since using the stuff it's been rare I get a leak.

That's enough from me on this subject - unless of course someone says something that really gets up my nose!!!

 

[markfxy]

putting compound on the thread wont stop the fitting leaking the compound if any should only be smeared on the olive

 

[Avatar]

Exactly my point!

rad valves need ptfe/compound on the thread - COMPRESSSION FITTINGS DO NOT!!!!!!!!!!!!!!!!!!!!

I dont no how many times I say this people still dont get it . . . . .

 

[Toddyplumb]

Agree 100% Avatar !

 

[Avatar]

Read page 7:
http://www.ibpconex.co.uk/pdf/compression_technical.pdf

Particually:

The Conex compression joint makes a metal x metal seal
which normally eliminates the need for jointing​

compounds and sealants.

 

[Avatar]

Its there in black and white in the manufacturers instructions - do they tell you to smear jointing compound all over your nice new joint, or 'mummify' it with ptfe tape?????

If it is a new joint, and it weaps some water when tested, I usually just give it another 1/2 turn and thats it 100% water tight!

Only if the joint wont stop leaking, then you should apply a sealant to THE OLIVE ONLY!!!

ARGGGHHHHHHHH!!!!

(this subject causes me some distress as you can see!)

 

[dontknowitall]

LOL LOL

And guess what?

The other day I was working with one of these plumbers who was looking over my shoulder and asked, "Why are you only putting it on the thread? It's meant to go over the olive. But with this stuff it helps if you put it over the thread as it lubricates the nut a little so you don't get the jerking."

DOH!!!

Another lesson learned, and thank you Avatar.