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Old March 28, 2009, 08:13 AM
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Swiftech used 3/8 NPT until 2007.

This radiator was bought in 2008, but was from an old stock, thus has 3/8 NPT threading.

I'm just wondering if 3/8NPT is the same as G3/8; or is there differences, like threading?
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Old March 28, 2009, 08:24 AM
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No idea about NPT stuff... Where do your plastic barbs leak? Between radiator and barb? Perhaps you can find rubber o-ring to put on barb to seal it off.
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Old March 28, 2009, 10:07 AM
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I'm 99% positive that 3/8NPT is different than G3/8 (which is technically BSPP 3/8, avec o-ring). Which unfortunately, isn't much help for the radiator, since there just hasn't been any demand for companies like BP to make good fittings for them. If the teflon tape isn't doing it, and you can't get an o-ring to seat decently, you might have to resort to some silicone that's rated for both metal and plastic, and that's rated for continuous water exposure. If so, make absolutely certain none of it leaks down into the radiator.
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Old March 28, 2009, 06:10 PM
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I'm going to try out the G3/8" fittings; hopefully they work.
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AMD64 Phenom X4 940 @ 3.6GHz G.Skill Black π 2x2GB
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Powercolor 4870x2
OCZ Vertex 120GB, Kingston V 128GB, Raptor X,
Antec Mini P180 CM UCP 700W
Samsung 240T, 226BW
Logitech G15, Microsoft X8

Watercooled by:
Swiftech Storm Rev.2 , 4870x2 FCB
1xMCP350 w/Petrastops , MCR220 QP , MCRES-MICRO , Tygon 1/2" ID
2 x Scythe Kama Ultra 1000
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Old March 28, 2009, 08:07 PM
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Quote:
Originally Posted by AERo View Post
I'm going to try out the G3/8" fittings; hopefully they work.
They wont you'll want a set of these. If they are for swiftech

Bitspower ST Transfer Adapter (NPSM to G 1/4" Converter) Products Model: BP-WTP-C05 [BP-WTP-C05] : Performance-PCs.com, ... sleeve it and they will come
G1/4 will work if they have a short thread, I believe the difference is 1 thread per inch.

Last edited by Supergrover; March 28, 2009 at 08:12 PM.
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Old March 28, 2009, 08:17 PM
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Sadly, those BP's won't work either. He's got an older Swiftech rad, when they had NPSM 3/8 fittings. The newer ones have NPSM 1/4, and yes, the thread difference is only 1/inch, which is why g1/4 work fine. Not sure if that minimal difference carries over to the 3/8 versions, though. Hopefully, it does. If it does, let us know. I'm a little curious at this point.
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Old March 31, 2009, 11:23 AM
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I'm testing the loop as I write.

I got the BP G3/8 to 1/2IN barb fittings for thermochill radiators, and they seem to be working
for the last 30minutes of the test run; that is still in progress.

From what I read through out various forums and given answers by retailers, G3/8 fittings
should work on 3/8 NPT, IF the thread section on the G3/8 barb is not long and it only
screws into the beginning section of the 3/8 NPT fitting.


Will update if things go awry (if leaks start happening again).


BTW, the BP G3/8 to 1/2" IN fittings and EK G3/8 to 1/2" IN fittings are suggested for use in my situation.
(Both have short threads and are made for Thermochill radiators)
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AMD64 Phenom X4 940 @ 3.6GHz G.Skill Black π 2x2GB
Asus M3A78-EM
Powercolor 4870x2
OCZ Vertex 120GB, Kingston V 128GB, Raptor X,
Antec Mini P180 CM UCP 700W
Samsung 240T, 226BW
Logitech G15, Microsoft X8

Watercooled by:
Swiftech Storm Rev.2 , 4870x2 FCB
1xMCP350 w/Petrastops , MCR220 QP , MCRES-MICRO , Tygon 1/2" ID
2 x Scythe Kama Ultra 1000
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