3 ms·

there's an industry that deals with this problem: https://en.wikipedia.org/wiki/Plumbing https://en.wikipedia.org/wiki/Plumbing

• benzofuran 10y ago
  Here's what they'll actually use for that: https://en.wikipedia.org/wiki/Pigging https://en.wikipedia.org/wiki/Pigging Poly pipe is pretty good for being non-porous and difficult for much to grab onto or grow inside - Oil & Gas uses poly lined steel pipes frequently where microbially induced corrosion is an issue (various extremophiles that live in the reservoirs that like to eat iron and shit acid, etc).
  • jaggederest 10y ago
    clean-in-place doesn't usually use pigging, just a nice spray of caustic and peracetic acid does the trick.
    • benzofuran 10y ago
      At that length I'd be surprised if they didn't - caustic & acid will require a few line flushes etc, whereas a plastic cleaning pig can be run with the beer in line without quality issues provided they run it every few days.