Go Back   Pro/Forums > ProCooling Technical Discussions > General Liquid/Water Cooling Discussion > Water Block Design / Construction
Password
Register FAQ Members List Calendar Chat

Water Block Design / Construction Building your own block? Need info on designing one? Heres where to do it

Reply
Thread Tools
Unread 05-01-2004, 06:24 AM   #1
siavash_s_s
Cooling Savant
 
siavash_s_s's Avatar
 
Join Date: Aug 2003
Location: here n there
Posts: 194
Default waterproofing threaded barbs

uhh.. silly question, but how do yall make sure your brass barbs are waterproofed on copper/plexi/polycarb tops?

the reason is that i have to put them on my rotor block (copper top)
then i goto do the same for my northbridge (polycarb) then i goto attach 2 barbs onto my plexi res..

so any input would b great
__________________
buy me a mill
siavash_s_s is offline   Reply With Quote
Unread 05-01-2004, 07:51 AM   #2
rundymc
Cooling Neophyte
 
Join Date: Feb 2004
Location: Singapore
Posts: 67
Default

silicone tape
rundymc is offline   Reply With Quote
Unread 05-01-2004, 07:57 AM   #3
j813
Cooling Savant
 
Join Date: Mar 2003
Location: southeast asia
Posts: 164
Default

I use Teflon Tape or Plumber's White Tape.
I noticed once when I fitted the Fittings to a "Copper block", when it was tight it didn't leaked @ all(tested for a couple a mins though).
I think it really depends on what material is the tap, something brittle will either crack, loose thread, etc. depending also on how you take care of it.
AFAI noticed some don't use any Tapes @ all. Testing for leaks should be done.
Well for me I want to be sure since I don't test leakage most of the time, takes too long.
j813 is offline   Reply With Quote
Unread 05-01-2004, 07:57 AM   #4
Etacovda
Cooling Savant
 
Join Date: Feb 2004
Location: Dunedin NZ
Posts: 735
Default

I use teflon tape for my car. Its available under plumbing supplies at hardware stores.
Etacovda is offline   Reply With Quote
Unread 05-01-2004, 09:29 AM   #5
SysCrusher
Cooling Savant
 
SysCrusher's Avatar
 
Join Date: Dec 2002
Location: Florida
Posts: 256
Default

I wouldn't bother with tape on the polycarb top. Use liquid teflon or hot glue.
SysCrusher is offline   Reply With Quote
Unread 05-01-2004, 10:02 AM   #6
JFettig
Cooling Savant
 
Join Date: Feb 2003
Location: Willmar MN/Fargo ND
Posts: 504
Default

I use teflon tape on everything, poly and all. and you would trust hot glue?


Jon
JFettig is offline   Reply With Quote
Unread 05-01-2004, 10:12 AM   #7
Etacovda
Cooling Savant
 
Join Date: Feb 2004
Location: Dunedin NZ
Posts: 735
Default

Hot glue?!! no way id trust that. Hell, i barely trust solder.
Etacovda is offline   Reply With Quote
Unread 05-01-2004, 01:10 PM   #8
Khledar
Cooling Savant
 
Khledar's Avatar
 
Join Date: Mar 2002
Location: North Vancouver BC
Posts: 234
Default

What about just a thin coat of silicone on the threads? I'm a big user of teflon, but I think I've seen others using some RTV Silicone on their barbs, just throwing it in the pot.
__________________
"mooooo" said the cow.
ERTW - UBC

P4 2.4B @3.01Ghz 167FSB :: Abit IC7 :: 2x256MB HyperX PC3700 :: ASUS 9600XT :: WD Raptor 2x36GB RAID0
Khledar is offline   Reply With Quote
Unread 05-01-2004, 02:53 PM   #9
Ewout_vB
Cooling Savant
 
Ewout_vB's Avatar
 
Join Date: Jan 2004
Location: Atlanta, Georgia
Posts: 112
Default

How about some...

Loctite....
Ewout_vB is offline   Reply With Quote
Unread 05-01-2004, 03:36 PM   #10
SysCrusher
Cooling Savant
 
SysCrusher's Avatar
 
Join Date: Dec 2002
Location: Florida
Posts: 256
Default

Quote:
Originally Posted by JFettig
I use teflon tape on everything, poly and all. and you would trust hot glue?


Jon

Yes hot glue. The low temp hot glue, there is different low temp glues for different purposes. I'd trust it before teflon tape any day when dealing with poly. As Ewout_vB said, Loctite is even better. Takes less stress to crack polly tightening a barb with teflon tape applied.
SysCrusher is offline   Reply With Quote
Unread 05-01-2004, 05:38 PM   #11
siavash_s_s
Cooling Savant
 
siavash_s_s's Avatar
 
Join Date: Aug 2003
Location: here n there
Posts: 194
Default

but with teflon tape, dont you worry about the barb being able to unscrew like when you put the tubing on?
__________________
buy me a mill
siavash_s_s is offline   Reply With Quote
Unread 05-01-2004, 07:45 PM   #12
-J-
Registered User
 
-J-'s Avatar
 
Join Date: Dec 2002
Location: Buenos Aires, Argentina
Posts: 217
Default

i use teflon tape on my tank.

i made the holes on the acrilyc 0,5mm bigger than specified for the thread, and i used 8 turns of teflon tape.

i have 8 threaded barbs on my tank, all of them leak proof using this method.
-J- is offline   Reply With Quote
Unread 05-02-2004, 01:47 PM   #13
bigben2k
Responsible for 2%
of all the posts here.
 
bigben2k's Avatar
 
Join Date: May 2002
Location: Texas, U.S.A.
Posts: 8,302
Default

Quote:
Originally Posted by siavash_s_s
but with teflon tape, dont you worry about the barb being able to unscrew like when you put the tubing on?
I use teflon tape with screwed PVC fittings: it's the only way that I can unscrew them. :shrug:
bigben2k is offline   Reply With Quote
Unread 05-02-2004, 08:07 PM   #14
|kbn|
Cooling Savant
 
|kbn|'s Avatar
 
Join Date: Feb 2004
Location: W. Sussex, UK
Posts: 329
Default

Use polyethelene tops, overtighten a few turns with plyers and there is NO way it could ever leak and the top wont crack.
with accrylic/polycarb id use PTFE but use slitghly less than normal, and use sillicone sealant on the outside to be safe.
Copper top i would solder - why not? or use threaded with PTFE, never tryed that though....
|kbn| is offline   Reply With Quote
Unread 05-03-2004, 08:28 PM   #15
Ewout_vB
Cooling Savant
 
Ewout_vB's Avatar
 
Join Date: Jan 2004
Location: Atlanta, Georgia
Posts: 112
Default

Quote:
Originally Posted by SysCrusher
Yes hot glue. The low temp hot glue, there is different low temp glues for different purposes. I'd trust it before teflon tape any day when dealing with poly. As Ewout_vB said, Loctite is even better. Takes less stress to crack polly tightening a barb with teflon tape applied.
My dad uses Loctite on professional tank instalation (he produces and manages the production of industrial measurement instrumentation). This stuff is as far as they know the best possible, If they think it's safe to make connections safe for *EXPLOSIVE* materials, with loctite I think water is no problem.
Ewout_vB is offline   Reply With Quote
Unread 05-10-2004, 08:15 AM   #16
bobkoure
Cooling Savant
 
Join Date: Feb 2003
Location: USA - Boston area
Posts: 798
Default

Permatex Thread Sealant with Teflon part # 14A / item 80631.
This is from the Loctite division of Permatex.
Long ago I worked on high pressure hydraulic systems (the stuff that would give you a puncture wound if you tried to find a leak with your hand). Most fittings were compression ones (so no need for sealant) and most of the others were "dry seal" tapered (usually brass/bronze into cast iron or steel) and seal through taper match and thread deformation, but there was the occasional straight-threaded item that needed to be sealed.
This stuff (its predecessor, actually - but this is pretty much the same stuff in a different tube) is what Loctite (then not part of Permatex) recommended. It worked very well.
I've since used it on motorcycle/automotive applications. It will even hold pressure after some ham-handed owner has crossed threads so the fitting (now straight) doesn't have a lot to grab on to.

In comparison, the pressures we see with watercooling are laughably low. I suspect this stuff would seal just fine with a simple push fit (haven't tried that, though ) I have used it on a few waterblocks/reservoirs/pumps, and not surprisingly it worked just fine.

One caveat - this stuff has teflon in it - it works as a thread lubricant. The relationship between torque and thread deformation / taper fit is now different - you can break things if you don't bear this in mind. Non-issue if you're using a non-tapered fitting.

While I'm on this - why are folks putting brass fittings into lucite/perspex/lexan/polycarbonate tops? IMHO you'd want the male fitting to be made of a softer material (like maybe nylon) that the female. This goes double if you're using tapered fittings.
This is a non-rhetorical question - what am I missing? It just seems wrong to me - most everyone seems to do it (even Cathar who clearly knows lots more than me).

Thanks!
Bob
bobkoure is offline   Reply With Quote
Unread 05-10-2004, 12:32 PM   #17
Boli
Cooling Savant
 
Boli's Avatar
 
Join Date: Apr 2003
Location: Blackburn / Dundee
Posts: 451
Default

two wraps of plumpers tape try not to overtighten it.... and then a good few more wraps of tape pushing it intothe gaps with a pencil (carefully) never had a problem with that join... only when I forgot to clamp a hose down. tight enough.
__________________
1800+ @ 2247 (214x10.5) - STABLE, 512MB PC3700 TwinX Cosair RAM, NF7-S v2.0, GeForce3 Ti200
Parallel BIM, 120.1 Thermochill, Eheim 1048, Maze 3, Maze4 GPU, "Z" chipset, 1/2" tubing, PC-70: 5x120mm & 9x80mm fans.
Internet Server & second machine (folding 24/7): 512MB DDR RAM, XP2000+
Boli is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 07:20 PM.


Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
(C) 2005 ProCooling.com
If we in some way offend you, insult you or your people, screw your mom, beat up your dad, or poop on your porch... we're sorry... we were probably really drunk...
Oh and dont steal our content bitches! Don't give us a reason to pee in your open car window this summer...