I had a weldless bulkhead fitting and used a brass ball valve to connect. I then got the bright idea to use brass fittings inside to make a dip tube. Then I got thinking, is using brass in a boil kettle bad (lead, etc)? I could have done the copper dip tube but don't have the welding parts. So I thought this was easier. I understand the threads might be a breeding ground for bacteria (no different then mash tun) and it will get sanitized during the boil. More worried about the chemical issues. I couldn't find a thread of someone using brass for dip tubes. Thanks for any guidance.