Fastferment with a mason jar yeast harvester.

[johnv51]

I put this together a couple of months ago and have used it several times. It works well and doesn't leak.

I replaced the original collection ball with a 1" MPT to 1.5" TC adapter. The adapter for the jar is a 1.5" to 2" concentric TC adapter. The jar ring is a base collar for a Hamilton Beach blender. It fits a standard mouth mason jar.
Here are some links:
TC to MPT adapter
1.5 to 2 TC adapter
Blender ring

 

[jmarkkaufman]

Interesting! Piqued my interest because my collection ball is missing, but I can get a new one for less than your parts. I assume your aim is to have your yeast in glass and minimize transfer. I love the ingenuity and tried a few adapters to the threads on the valve to no avail.

 

[johnv51]

It makes transfer and collection much easier using the TC connection. You can see fermentation activity in the jar. Also, the collection ball was more difficult to clean.

 

[jmarkkaufman]

Gotcha. I never had mine, and the stock lock ring is missing as well, which only comes with the collection ball. Nice mod!

 

[johnv51]

If the plastic valve gives me any problems (none so far) I'll replace it with an SS butterfly valve like the one I used on my 15 gallon inductor tank.