Partsproduction: I like the looks of that setup. Very clean. What are you using as the pot/valve?
Here's my current setup... I have to haul it out of the basement every time I want to smelt. PITA actually... makes it so I can only get about 2 buckets (about 250#) done a day...]
The 12qt steel stock pot will hold (almost to the brim) 2 full 5gl buckets of melted WWs (weighed in at 260#).
I pulled 8qt (20#) of clips & 4 floaters off the melt.
Ended up with 105 2#+ (about 2-1/12# av) ingots for not qiote 220# total.
Total loss to Clips, Dirt & burnoff = 40#.