Just finished building my MT from these instructions. I bought all the parts at HD except the 3/8" ball valve and the SS hose, both at Lowe's.
I didn't find a food grade, high temp 7/16 tubing so the SS hose is zip tied to both brass fittings. The SS hose just feels like it could collapse and cause a stuck sparge, I'm hoping it won't, not like the plastic hose wouldn't keep it open anyhow.
The outside, I had to use 3 washers and a lock washer (it was in the 5/8" make a bolt kit so I could get SS washers). The ball valve has a little wiggle, I could probably still twist it but it's not leaking so I will leave it alone. I tried to get the threads from the nipple seated all the way into the valve, it just wouldn't tighten any further necessitating the need for the included lock washer (tough to get on).
Can't wait till I have free time to mash and AG, my first, but much thanks for the parts list and instruction on how to build this! :rockin:
EDIT: All night and not a single drop leaked. Yes, the ball valve will easily spin on the axis of the direction of water flow, I did not tighten to the point it will not and works great.