Did you get a set or two of O-ring for the spigot?
What is the expected outcome of the open fermentation, trying to tone down the phenols and boost the banana?
Different yeast but I had seen people saying that an open ferment of WLP037 Yorkshire Square Ale gets rid of the phenols. I have some of the yeast from the latest release a few months back and would like to give it a try but I am not sure I can truly get my chamber clean enough (the chamber is in the garage) to ferment without a lid.
When I made the switch over to the Brew Buckets I looked at those spigot and racking arm gaskets and I determined that they were flashing, neon-lighted failure points, so I put together a crash box for those gaskets. You can see it pictured below. To my surprise, they've been quite durable. I've occasionally swapped them out for reasons of caution, but I have yet to have one actually fail. (way to jinx yourself, BC)
Regarding my decision to attempt an open fermentation with the Munich Classic hefe yeast, most published accounts of hefe brewing seem to note the importance of an open fermentation to achieve the correct flavor profile, I'm leaning heavily on Stan Hieronymus'
Brewing with Wheat here. And as you know, there are no shortage of serious hefe home brewers that lend credence to open fermentation working at the homebrew scale.
I'm
not a serious hefe brewer. It's a style that I enjoy in the spring, but I'm typically a bit hefe'd out by the time the keg kicks. I think the fact that my past hefes tended to be phenols forward with banana playing the supporting role contributed to that hefe fatigue. I'm not sure if it was the switch to Munich Classic or the partially open fermentation (it was open during the critical flavor forming period, so I think it did have an effect) but this batch seems like it's going to be a hefe I can finally be proud of. I also forced the pH downward in the kettle from the pH 5.4 mash number, to a post boil pH of ~5.1. It's a lot softer on the tongue and I think the pH thing helped with that.
I do have lots of experience with WY1469, which (I think) is a direct equivalent to WLP037. I think they're both T. Taylor strains, right? I've found that simply placing the lid on the fermenter, but not locking it down, is perfectly fine for avoiding the clovey-cherry pie thing that the T. Taylor strain will sometimes do when it gets too excited.
That's more or less what I did with my hefe. I pitched, then placed the lid on without latching. The following morning I peeked inside and saw that there was a thin but complete krausen offering the ale some protection, so I took a deep breath and removed the lid. The next time I use the T. Taylor strain, I'll do the same.
I hope you found some of that useful! I can't claim any expertise when it comes to open fermentations, but the above represents what I've learned so far. I'm sure others with more experience can likely give you better and more detailed advice.