Hi guys - John here from Blichmann Engineering. We made the body from low lead surface treated brass for cost reasons. There is a reason the stainless units in McMaster are so expensive. Stainless is hard to machine and hard to cast. The big difference between our design and the inexpensive...
There is an adjustment screw on the valve that sets the level. And as long as the pot is at least 12" in diamater you can control the level virtually anywhere you want.