I would stick with food grade, at least for the liquid lines. I recommend a maximum ID of 3/16", which is a little tough to get onto the hose barbs (unless you soak the end in boiling hot H2O first), and it should be at least 5 feet long, and more is not a problem. the CO2 line is not nearly as critical, 1/4" ID will do, and length is not important. I usually go to McMaster-Carr (mcmaster.com) for hoses, post o-rings (AMSE -109 and -111) lid o-rings (-417). You can find the o-rings in FDA food-contact silicone, and there are several FDA hose types. Hate to say it, but mcmaster is by no means a cheap supply house, but they beat what you pay at home brew shops.
Last edited by Mill Rat; 05-07-2013 at 05:53 PM.
On deck: a clone of Carolina Beer Co's Rye Stout, clone of Breckenridge's Vanilla Porter,
Secondary: Dortmunder, Hopweizen
Keg Conditioning: Dunkelweizen, Roggenbier, Okto, Ord. Bitter
On tap: Alt, Hefeweizen, Cigar City Maduro clone, Mild
Bottled: Mead, Quad Rajet, Granola Bar Braggot
Too much of everything is just enough.
- J. Garcia