Need a little help compression fittings and tubing

Xoligy · 5 Nov 2009 at 10:58

Hi all, was up at overclockers yesterday for some items, the items i got were as follows:

TFC Compression Fitting G1/4" Thread 3/8" ID/1/2" OD - High Flow
http://www.overclockers.co.uk/showproduct.php?prodid=WC-012-FO

and

Masterkleer 1/2" Tubing 'Thick Wall' UV Black - 1m
http://www.overclockers.co.uk/showproduct.php?prodid=WC-091-OK&groupid=962&catid=1530&subcat=

But i dont see how i get them to fit have i brought the wrong tubing or something? I DO need 1/2" tubing as all my other fittings are 1/2 any help and advice is appreciated!

shadowscotland · 5 Nov 2009 at 11:51

Separate the compression fitting in two
fit the 'ring' part over the tube
push tube onto fitting
screw ring onto fitting (compressing/locking tube in place)
job done

If the ring will not slide easily up and down the tube - the tube is two thick.
most 1/2"(~13mm) tube has a 1/8" thick wall makeing the outside diamater 3/4"(~19mm) - 1/8 + 1/2 + 1/8 = 3/4

I don't know if 'Thick wall' Masterkleer is 3/4 OD but I would guess. As 'thin wall'' types are 1/2 ID 11/16 OD Tube

Xoligy · 5 Nov 2009 at 12:10

Thanks for that just sat and finally forced it on ^^

I take it that the fitting wount be flush with eachother but be fine yes?

oh and it does not slide easily :/

Xoligy · 5 Nov 2009 at 18:08

I'll attept to force a flush fit tomorrow with some pliers i guess the gap isnt too much only a few mm...

Ducky Spud · 5 Nov 2009 at 19:01

I think you have the wrong fittings. Those you have use 3/8" tubing. You have 1/2" tubing so would need these size fittings

The tube size is the inner diameter, not outer. You therefore need to mactch this to the ID on the fittings

Xoligy · 5 Nov 2009 at 19:48

Unfortunatly im no good with sizes or anything, i think the problem is to do with me getting "thick" wall tubing so maybe the ones you suggested will work with the thicker wall. I may just try some thinner walled tube just depends if i can persuade someone to give me a lift to the store again as i have no CC and im a distance away lol

Oh the fittings were suggested with another tubing but thats when the store didnt have this tubing in stock i just clicked the top black one teach me to look next time :-P

I'll see what happens with pliyers tomorrow if is a flop thinner walled tubing

shadowscotland · 5 Nov 2009 at 20:23

Doh! how did I miss that - Duck spud is right - you need different tube really.
But if the boot fits it fits. as long as you have a good full turn of the 'ring' nut it's not going anywhere.

Don't force it with pliers - you may rip the tube

Xoligy · 5 Nov 2009 at 20:26

Not ur fault shadowscotland, both of you have been really helpful so thanks

I have it tight on the tube, so will give it ago on a leak test when i get the res bay one day was dissapointed i went to oc with the site saying 10+ to get "none in stock"

Oh well, thanks anyway guys