http://www.chicken-house.co.uk/acatalog/Tripod_Drinkers.html
Stumbled upon these. My guess is they're probably HDPE/food grade as chickens tend to end up in the food chain.
OMG! What other web-sites do you look at ;)
Great bit of cross-process lateral thinking Thomas
They are certainly a great price and look the part!
As I believe we also keep chickens in Ireland some agri-store may have them.
Assuming they are FG the only slight problem is how to fit a screwed plumbing/SS fitting to the bottom.
I am sure it would be possible though.
Can some of our more "rural" members ask in their agri-stores?
I've seen these mentioned before, and I think the issue was that the sides weren't steep enough to allow the trub/yeast to fall down, and be collected from the bottom. Might be worth a try though.