dedhedjed - THANKS for the quality recommendation! Can you tell me more about what this item does or how it works please? The description says, "Food grade nylon, custom-molded to include an integral backnut. Keeps beer (and yeast sediment) out of the Transfer Valve during fermentation. Fits our Bottling Valve above, or any valve with 3/4” tapered male pipe threads." My guess is that this is like a nylon cover that fits over the male-threaded portion of the spigot that protrudes inside the bucket. Thanks again!
azingsheim - THANKS for the great sugesstion! This seems like a super simple solution. A rubber stopper might not even need to be epoxied if it were tapped in tight enough.