Your question is debatable in that a lot of us do not have a thermometer on the boil kettle. A little below half way up is good for a brewmometer.
The drain should be as low as is reasonable and some have a tube that goes to the edge of the pot at the bottom to avoid sediment and not leave too much beer behind.
1/2 inch fittings are standard and stainless material is preferred.
Fermentor 1: Bill's House Ale II, Fermentor 2: German Helles, Fermentor 3: Bill's Schworzbier (Black Bier)
Tap 1: Bill's House Ale II, Tap 2: German Hefewizen, Tap 3: Nut Brown Ale
Future Brews: Stone IPA Clone, Blonde Ale, Budvar Clone, Newcastle Clone
New toy: Blichmann 27 gallon fermentor
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