Compact VM head, coil in a box

[manu de hanoi]

Hi all,

I have to follow the VM hype, making 1/2 a millimeter adjusments to the liquid output valve (2 meters high) every 10 minutes is annoying indeed. So, the column is 3 inches, the output is 2 inches, using a valve with screw fittings.

Here are the design constraints :
- the 2 inches stainless screw fittings are expensive, at least 2 males are required for the pipes on each end of the valve (already equipped with female screw fittings). the fittings will be welded on 2 pieces of a 2 inch pipe one connecting to the column the other to the cooling section
- Cooling: I want to use a copper coil because it's much smaller than a stainless jacketed cooler, the problem is that for maintenance, one must be able to disassemble the coil, and that make things much more complex
- distillate liquid output : 10 mm pipe
- My current design so far is in the picture, I am not really satisfied because the coil will touch the bottom of the pipe and retain/slow distillate evacuation. If the coil was vertical then it would require one more screw fitting in order to let the coil be disassembled

I need some suggestions on how to improve the design