1/4" bsp fittings in America
 

I've googling for over an hour. I can't seem to find a place in America that sells 1/4" bspp to 1/2" OD. Does anybody have any recommendations? Thanks.

I think you might have to do it with two fittings: 1/2" to 3/8" and then 3/8" to 1/4".

these guys do them - shouldn't cost much to ship a couple over the pond.....
http://www.coolercases.co.uk/wc_fittings.htm

Eldon James makes that fitting. I've bought 'em from mcmaster-carr.
You may be having a problem with BSPP - try looking for just BSP. In the states at least, BSP seems to imply BSP(parallel) and only BSPT is written out.
Bob

Thanks for everyone's help. I only found bspt fittings on mcmaster. Screw it... I don't think 1/4 bspp to 1/2" OD will work too well anyways. We'll see though.. pH is reviewing the alphacool stuff from Cathar with 1/4" bspp to 1/2" OD.

Don't use those brass barbs with anodized aluminum wbs.

You can probably just use 1/4" NPT barbs instead of BSPP with a bit of sealant - assuming the block you're using is metal topped (NPT into BSP is likely to crack plastic tops).

Eldon James only makes plastic fittings. They're very good, though.
Try searching mcmaster for part 53415K204 - and just add "BSPT" to the comments field. $5 for a bag of 10 (plus shipping).
Note that they might call these BSPT but they're not tapered and will fit Innovatek (and other) blocks properly.
I've never seen a "BSPT" fitting in the US that was tapered. Had thought that the "T" stood for "thread" not "taper" but could easily be wrong. Mis-spent a few years in my youth working on hydraulics systems, so I know a bit about threads and tapers, but not really much about BSP.