Ok, here is a picture of the tap.
From right to left, a brass garden hose snap lock male fitting, onto a nipple with a hexagonal spanner grip section in the middle, into a ball gate valve, this one I think is an NPT gas valve (it works just as well as BSP), onto a nipple which runs through the keg wall, secured on the outside by a bulk head fitting.
This is the inside of the pick-up tube for my HLT. A nipple extends through the wall of the keg secured by a bulk head fitting, a compression fitting secures a bent 15mm pipe onto the nipple.
This is the inside of my kettle. It's similar to the HLT however you might notice that the bottom of the keg has been inverted. I banged and banged and banged it with a lump hammer. The idea is the hot break and any other trub settles to the sides and I pick up the wort from the top of the dome. Additionally it gives better efficiency to heating the kettle. I'm not sure it's worth it. A tube that picks up from half way up the concave section would probably be as good.
This is a picture of the elbow that the site tube for the kettle is attached to. It's one of those fittings that is designed to be screwed to a wall stud or nogging. A cistern or washing maching cock would normally attach to it. It has a male thread which is fed through the keg and secured with a bulk head on each side. It has a socket where a short section of 15mm copper pipe is soldered in place. As with the HLT a PVC tube is slotted over the copper pipe, then the old pickup tube is slotted over the top of the PVC tube and they're both held in place with a hose clamp. One of the support fixing holes is damaged in this example from the oxy-acetaline torch.
This is a picture on the inside of the keg for the site tube assembly on the kettle.
This is a picture of the site tube on the kettle.
This is a picture looking into my HLT, the \hose I use for transferring from my HLT to mash tun then to kettle is sitting on top. Again all hardware store materials.
If you are wondering what the difference between british standard pipe thread (BSP) and national pipe thread (NPT) is. Well the later is a US standard. BSP is a parallel thread, the gap between each grove or ridge is equal. NPT is a tapering thread, the gap between each thread or grove from outside in gets smaller and smaller. The advantage with NPT is that a tight seal can be made and you can probably not bother with silicon tape. It is often used in Australia for gas fittings.
Anyway I hope this helps even though it's in an off topic thread. I probably should have put this in a thread of its own.
All the best.
Scott
h34r: as listed on G&G site) tucked away in 'the shed' that are left over from my journey into AG. I'll try and dig them up tomorrow and post a pic so all can see. I'd only be looking at getting the $'s back on what they cost me (from memory $20-$25) and some postage. 
