Originally Posted by ScubaSteve
Good info on the direct fire. I recently got a good score on someone selling their gear, and have a spare 50' of 1/2" copper with 2 march pumps. My kegs are pretty much coupled already. I do like the mash arm though! I'm trying to come up with an acceptable method to return the wort to the top of the grainbed gently and without losing too much heat.
The UPS Gods just delivered these from McMaster:
Polypropylene Material Polypropylene
Backing Plain Back
Ball Type Hollow
Translucent Translucent with White Tint
Highest Temperature +100° to +200° F
Operating Temperature Range Up to +190° F
Specifications Met Not Rated
150 | 2000
150 3748K31 $15.71 per Pack of 150
2000 3748K21 182.18 per Pack of 2000
Sorry, McMaster's website makes it difficult to post a direct link that works. I plan on floating these on top of the mash to both insulate and provide a gentle path for the sparge water to return to the grain bed. Haven't tried them yet, hopefully next week, but I've got a LOT of balls.
edit: BTW, 300 of the 20mm balls provide a good cover in a 10 gallon round cooler.