@KegLand-com-au - in the attempt to chase an efficient and quality method of oxygen free dry hopping, would you be able to make a new 4" pressure lid for the kegmenter? I envisage it to be as follows:
View attachment 119753
The larger port would ideally be a 2" TC (a 1.5" TC may also work if dimensions are limited). A larger port here is desired to minimise hops getting stuck. The two smaller ports would be the male threaded ports for the gas and liquid disconnect posts (as are currently on your kegmenter 4" pressure lid). A PRV port would also need to be added between the two smaller threaded ports for safety.
Attached to the 2" port would then be a 2" TC butterfly valve (
here), a 2" sight glass (
here), then a 2" TC cap with a gas post and PRV for venting and safety (
here).
The butterfly valve would be closed for most or all of fermentation. When ready to dry hop the sight glass would be added to the valve, filled with hops, then capped on top. The cap would be connected to a gas line and pressurised/vented several times to purge O2. Then the butterfly valve can be opened and hops drop in.
I have seen a similar set up on much more expensive fermenters (conicals and the like) and have wondered for some time how this arrangement could work on a kegmenter. I believe this is the best way but it all relies on the 4" TC adaptor lid to 2" TC port with posts.
Thoughts?