I currently use a small piece of copper- 3/8 ID? shoved through a bung in the bottom of my cooler:
(this shows a plastic tube, but I’ve since changed to copper, because I think the plastic warms and then is constricted and squeeze by the bung.
I tried mounting a nipple to a ball-valve and using washers on either side, but since I’ve drilled the hole flush with the inner floor of the cooler, the washer never sits flush. I’ve tried various thick o-rings and rubber washers, but nothing seals the inner washer against the wall. I’ve also tried sanding one of the inner plastic washer/nut that seals the spigot on the inside of a bottling bucket on one of its’ edges to get it to sit closer to the floor and thus pull the outside washer to the cooler… but it still leaks.
I think the only other option is to shove a thicker piece of copper through the bung, but then I’d have to drill out the bung to get a thicker diameter.
Has anyone tried to drill a bung? (yes, I know that sounds funny).
I spoke to mullerbrau and since he brews 35 gal batches, he has a long time to wait to drain because he is heating the water. My smaller gallon 5 and 10 gal batches heat quick and I’d prefer to drain faster.
Any suggestions other than siphoning over the side?