Can you retrofit a carboy with a butterfly valve setup, a la conical fermenters?

[Joseph Martinez]

Got my hands on a 25l teardop carboy that has a sharper angle than a regular carboy for use as an inverted conical fermenter. Is there a known adapter to retrofit it with the same type of parts used in conical fermenters like the Catalyst, Fermzilla, etc.? I intend to drill a hole in the top of it for an airlock.

 

[Broken Crow]

Please post pic, and maybe hold a ruler or measuring device to the mouth you want to put an attachment to.
...problem-oriented minds want to know

 

[IslandLizard]

It's made of some sort of plastic, yes?

If you can find a way to attach that butterfly valve solidly and leak free to the neck, which will be on the bottom then, yeah, why not?

 

[Joseph Martinez]

I actually won't officially get my hands on it until next week, but I will measure it for sure.

It's actually glass.

 

[IslandLizard]

It's actually glass.

Then just keep it as relic in a corner of your living room, merely as a conversation piece. DO NOT USE as a fermenter! Glass can/will break. Those large shards can and will cause major injuries:
https://www.homebrewtalk.com/search/5346560/?q=broken+carboy&c[title_only]=1&o=relevance
Our main thread on those:
https://www.homebrewtalk.com/threads/broken-glass-carboy-horror-stories-compendium.376523/Warning, contains graphic content!