The dangler contact also uses relatively common parts.
The dangler guide
Made to keep the tip of the dangler in just the right position w/in the barrel
Dangler
Dangler-1
Pass the cooper braid through the hose.
Stuff the rounded end of the bolt into the braid to expand it.
Complete dangler
The complete dangler assembly, ready to use!
This whole unit just drops over the edge of the tank, with just the stainless tip, and an inch or so of vinyl hose, in the bottom of the barrel.
