1/2" Barbs what thread are they?

AFK_Matrix · 19 Jun 2006 at 21:52

Hi,

Ok getting an Aquatube and the thread on it is 1/8" so are there barbs that are 1/2" that will fit this? If so could you give me there name? Or are all barbs 1/8" thread?

Thanks

monkeypants · 19 Jun 2006 at 23:27

Barbs come in all different thread sizes. Google (or froogle specifically) can help you finding a source for such barbs.

AFK_Matrix · 20 Jun 2006 at 09:00

Well I can't find any 1/2" barbs that have 1/8" thread. Can you rethread an Acrylic Aquatube do you think?

monkeypants · 20 Jun 2006 at 09:57

After a little research, you're looking for 10mm id to 1/8 inch thread.

Scroll down a bit, you want A340- 10- 1/8- male to hose barb adapter

DaveMac · 20 Jun 2006 at 11:17

Largest G1/8" barbs I have seen are 10mm from the usual suspects.

Re-threading to a larger diameter is quite common on the aquatubes, but you will loose the anodising protection on the aluminium, haven't heard of an acrylic version done yet but there should be no reason why it won't work.

Another alternative is to clamp 1/2" tubing over 10mm barbs with jubilee clips, though this may have an impact on performance with the reduced supply.

Be aware that G threads are equivalent to BSPP and have parallel threads, and are different to BSPT (as the link above) which has tapered sides.

AFK_Matrix · 20 Jun 2006 at 15:44

Thanks for the replys. From talking about this on another forum I think the only thing to do is to Drill and Tap the Aquatube to 1/4BSP. So gonna see if I can find someone who has a pillar drill as doing it with a hand drill is incredibly hard to get the hole perpendicular. If I can't find anyone to do it, its back to the DangerDen reservoir.

And yes there are Acrylic Aquatubes, there are only 100 of them coming to the UK but they look fantastic.