Overclock.net › Forums › Cooling › Water Cooling › Push-to-Connect Fittings
New Posts  All Forums:Forum Nav:

Push-to-Connect Fittings

post #1 of 18
Thread Starter 
I was messing order with some fittings I had in the lab at work and I had several of these push-to-connect fittings laying around. You typically see these guys on water filtration systems for homes and office water coolers. Has anyone ever tried using them on a water cooling build?



Fittings via McMaster-Carr:
http://www.mcmaster.com/#push-to-connect-tube-fittings/=lqp135

They have G1/4" threaded fittings that mate to 12mm OD tubing. They come in nickel and acetal
Maximum Pressure @ 70° F: 290 psi
Temperature Range: -4° to +175° F
Uses nylon tubing (with a hardness of Shore D 50 and D 70), polyethylene (Shore D 44), and polyurethane (Shore A 95)

The drawing for the fitting


Tubing :
http://www.mcmaster.com/#standard-plastic-and-rubber-tubing/=lqoy17
part number is 9355T52

the extra flexible nylon tubing seems to work fine at 38 mm bend radius and has a 90 psi pressure rating.

Based on the specifications, it seems like these could work for a water cooling loop but I haven't see anyone use them. Is there any reason why?
Edited by renkenkyo - 3/4/13 at 11:38pm
post #2 of 18
Thread Starter 
Also doing some calculations (habit of being an engineer), it seems the pressure drop isn't too severe. I did the calculations using a co-efficient of roughness for a extremely used pipe (0.01 versus 0.0013 for new) of plastic.


Flow medium: Water 20 °C / liquid
Volume flow:: 2 gal/min
Weight density: 998.206 kg/m³
Dynamic Viscosity: 1001.61 10-6 kg/ms
Element of pipe: circular
Dimensions of element: Diameter of pipe D: 10 mm
Length of pipe L: 10 ft.
Velocity of flow: 5.27 ft./s
Reynolds number: 16011
Velocity of flow 2: -
Reynolds number 2: -
Flow: turbulent
Absolute roughness: 0.01 mm
Pipe friction number: 0.03
Resistance coefficient: 8.9
Resist.coeff.branching pipe: -
Press.drop branch.pipe: -

1.66 psid for 10 feet of tubing versus 0.5 psid for 1/2" ID tubing so it doesn't seem to have a huge amount of loss.
Edited by renkenkyo - 3/4/13 at 11:32pm
post #3 of 18
you have to include part(s) numbers when you link to mcmaster-car

swiftech, used to use push-in fitting on most of their low profile blocks

i think you need to use rather rigid tubing to make them seal properly for bigger sized tubing, if i remember correctly


as for the pressure drop, is that for rigid or soft plastic, like acrylic or vinyl?
Edited by somebadlemonade - 3/4/13 at 10:51pm
Main Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
I5 6600k Asus Z170I Pro Gaming EVGA 1080TI FTW3 Corsair Vengeance LPX 3200MHz C16 
Hard DriveHard DriveCoolingOS
Samsung 850evo Western Digital Red Hyper 212+ W7 64 bit 
KeyboardPowerCaseMouse
Logitech G610 Orion EVGA Supernova G3 850 Fractal Design Core 500 roccat nyth 
  hide details  
Reply
Main Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
I5 6600k Asus Z170I Pro Gaming EVGA 1080TI FTW3 Corsair Vengeance LPX 3200MHz C16 
Hard DriveHard DriveCoolingOS
Samsung 850evo Western Digital Red Hyper 212+ W7 64 bit 
KeyboardPowerCaseMouse
Logitech G610 Orion EVGA Supernova G3 850 Fractal Design Core 500 roccat nyth 
  hide details  
Reply
post #4 of 18
Thread Starter 
Quote:
Originally Posted by somebadlemonade View Post

you have to include part(s) numbers when you link to mcmaster-car

swiftech, used to use push-in fitting on most of their low profile blocks

i think you need to use rather rigid tubing to make them seal properly for bigger sized tubing, if i remember correctly


as for the pressure drop, is that for rigid or soft plastic, like acrylic or vinyl?

Thanks, I'll edit the links.

The calculation is for soft plastic, but without looking through data, that's the generic roughness factor for contaminated and very old soft plastic hosing. The pressure drop for new plastic is 0.5 psid.
post #5 of 18
I'd never seen a push to connect fitting for a water cool set up. But from my experience, changing the reverse osmosis I know the o rings can go bad over time and cause leaks. I'd like to see how this turns out so I keep an eye out on your progress. good luck Renkenkyo:thumb:
post #6 of 18
you'll always get more pressure drop from water blocks than tubing, and as long as you aren't using right angle fittings, pretty much anything over 1/4" I.D. won't have enough pressure drop to really effect temps

i'd just be worried about leaking
Main Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
I5 6600k Asus Z170I Pro Gaming EVGA 1080TI FTW3 Corsair Vengeance LPX 3200MHz C16 
Hard DriveHard DriveCoolingOS
Samsung 850evo Western Digital Red Hyper 212+ W7 64 bit 
KeyboardPowerCaseMouse
Logitech G610 Orion EVGA Supernova G3 850 Fractal Design Core 500 roccat nyth 
  hide details  
Reply
Main Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
I5 6600k Asus Z170I Pro Gaming EVGA 1080TI FTW3 Corsair Vengeance LPX 3200MHz C16 
Hard DriveHard DriveCoolingOS
Samsung 850evo Western Digital Red Hyper 212+ W7 64 bit 
KeyboardPowerCaseMouse
Logitech G610 Orion EVGA Supernova G3 850 Fractal Design Core 500 roccat nyth 
  hide details  
Reply
post #7 of 18
Thread Starter 
Quote:
Originally Posted by misterjimmy View Post

I'd never seen a push to connect fitting for a water cool set up. But from my experience, changing the reverse osmosis I know the o rings can go bad over time and cause leaks. I'd like to see how this turns out so I keep an eye out on your progress. good luck Renkenkyo:thumb:

I think leakage would be my primary concern as well, but it's a static o-ring so other than squeeze, I don't think it'll be all that different a typical barb which uses one as well to the surface of your components. Of course your barb gets torqued down so it'll be up to how much static squeeze is on there.
Quote:
Originally Posted by somebadlemonade View Post

you'll always get more pressure drop from water blocks than tubing, and as long as you aren't using right angle fittings, pretty much anything over 1/4" I.D. won't have enough pressure drop to really effect temps i'd just be worried about leaking

Yeah, I threw that calc out there just to show the ball park number isn't much worse than the current hosing being used because some people might worry about that. It's relatively insignificant like you said.

Here's an article about push-to-locks:

http://www.watertechonline.com/articles/what-s-new-with-push-to-connect-fittings

I think the primary advantage is that these fittings are cheap and also really really quick to work with.
post #8 of 18
Thread Starter 
post #9 of 18
Thread Starter 
I think I'll go ahead an pick a few of these and test em out for a week or so on external loop and check for leakage. Anyone else interested?
post #10 of 18
Hi all,

Engineer here as well.


I'm also using push to connect fittings.
Except for two differences.

1.) I'm using all metal industrial fittings for liquid and low pressure applications.
Fittings are from PARKER

2.) I'm using rigid stainless steel tubing.


If anybody is interested I'll post results in a few weeks once I get it all finished.
The tubing I'm using is 12mm OD, 8mm ID
Serenity
(14 items)
 
Singularity
(13 items)
 
 
CPUMotherboardGraphicsRAM
[intel] i7 4790k [Asus] Maximus VII Impact [AMD] R9 Fury X [Crucial] Ballistix Sport VLP 16 GB Kit 
Hard DriveCoolingOSMonitor
[Samsung] SM951 M.2 256GB Custom Watercooling Windows 10 [Samsung] S27A950D 27" 120hz 
KeyboardPowerCaseMouse
[Filco] Ninja Majestouch-2 Athena Power AP-MFATX50P8 500W FlexATX Lian Li PC Q-12 [Mad Catz] R.A.T. 7 
Mouse Pad
[Razer] Goliathus 
  hide details  
Reply
Serenity
(14 items)
 
Singularity
(13 items)
 
 
CPUMotherboardGraphicsRAM
[intel] i7 4790k [Asus] Maximus VII Impact [AMD] R9 Fury X [Crucial] Ballistix Sport VLP 16 GB Kit 
Hard DriveCoolingOSMonitor
[Samsung] SM951 M.2 256GB Custom Watercooling Windows 10 [Samsung] S27A950D 27" 120hz 
KeyboardPowerCaseMouse
[Filco] Ninja Majestouch-2 Athena Power AP-MFATX50P8 500W FlexATX Lian Li PC Q-12 [Mad Catz] R.A.T. 7 
Mouse Pad
[Razer] Goliathus 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Push-to-Connect Fittings