Compression Fittings

dazzerd · 8 Feb 2012 at 22:30

Hi guys I am doing a rebuild at the moment and have for the first time since I started watercooling have decided to use compressions.

Now I have built my loop and leak tested and there is non. However I am concerned I haven't mounted the tube correctly. I am using EK Compressions (there very nice by the way). On the nozzle there is a knuckle about half way down. I have pushed my tubing up to the knuckle but not over it and tightened the fittings and all seems good. However I'm doubting myself and wondering if the tubing should be pushed right over the knuckle to cover the entire nozzle?

Thoughts please?

Jokester · 8 Feb 2012 at 22:31

The tube should be pushed on as far as it goes - typically down to where the thread for the nut starts.

Cleeecooo · 8 Feb 2012 at 22:32

It should cover the entire nozzle.

There's a chance we're defining things differently. Any chance of a pic?

dazzerd · 8 Feb 2012 at 22:40

Here you go red arrow points to what I mean by the knuckle and as far as the tubing goes.

lrlcr · 8 Feb 2012 at 22:42

Push it over the knuckle...

Jokester · 8 Feb 2012 at 22:43

Yeah the knuckle is where you get the compression seal.

Cleeecooo · 8 Feb 2012 at 22:54

Should slip over with a bit of evenly applied pressure.

dazzerd · 8 Feb 2012 at 22:56

Bah pain in the bottom, will have to do tomorrow, strange how it didn't leak though.

Thanks though.

Krony · 9 Feb 2012 at 02:24

My take on compressions:

Sir SpankalotUK · 9 Feb 2012 at 03:17

quickly soak the end of the tube in a cup of hot (not boiling) water, it will make the tube push on to the fitting a lot easier

Cupra · 9 Feb 2012 at 05:34

If you have the correct tubing for the compression fittings it shouldnt need heating up it should slip right on there just needs a little force

i must say i do like my ek fittings

dazzerd · 9 Feb 2012 at 08:15

Yes I;m really happy with the quality of these EK fittings, was worried about getting some dodgy ones but these are excellent quality.

ps cupra your card will be posted this morning, ill trust yoo the tracking number when I have it.

JamesM · 9 Feb 2012 at 09:09

I liked my EK fittings, they were just a royal pain in the arse to use compared to the 1/2 barbs i'm using now haha.

mystes · 9 Feb 2012 at 10:19

Ek fittings don't go well with masterkleer tubing. I was strugling to screw them back on. On the other hand bitspower fittings were the real pleasure to work with.

no_1_dave · 9 Feb 2012 at 12:55

Bit risky but if it were me I probably wouldnt drain the system to fix this. I'd probably just unscrew each compression fitting & push the hose on correctly then screw it up again. Draining the loop imo is too much hassle. I had 2 leaky compression fittings in my last re-build & I changed them without draining it. Only a bit of water came out which I'd prepared for. 1 was the fitting on my cpu block, the other was one of the fittings on my side rad. laws of physics wont allow water to gush out as long as the rest of the loop is sealed because there is no where for air to rush in. Worst case scenario in your case is a drip or 2

Krony · 9 Feb 2012 at 13:06

EK compressions have seemed pretty tight on all tubing i have used, i think they just make them a touch bigger than others.

terminator2k2 · 9 Feb 2012 at 13:33

after i tightend my compressions onto the tube, there was no way of getting them back off without cutting the tube and undoing them from the blocks or rads......i then had to pull the tube off the compression fitting with it still screwed in......the blummin things just wouldnt undo.......

Sir SpankalotUK · 9 Feb 2012 at 15:02

I've had tubing in the past that didn't want to allow the compression fittings to unscrew, but the Masterkleer tubing is pretty good at allowing the compression fitting to unscrew.

Just check your not over tightening the fitting, finger tight should be more than adequate.

jinxpad · 9 Feb 2012 at 16:46

heheh nice fittings Daz, same ones I'll be putting up for sale in a week or so as I'm moving up in tubing size.

dazzerd · 9 Feb 2012 at 21:44

Thanks all build is done now just waiting for my temporary gpu to arrive, no more gtx 480 sli for me

Mobo is asus x79 sabertooth, with koolance blocks and rads throughout.

Roll on Keplar

Should be two pumps in there as well but one of them was dead, not sure how long it has been dead for as it was in my old build but didn't work in my new one. One of the disadvantages of running two pumps off one pwm header