I'm working on building more of an automated brewing system, gas fired electricly controled. But, all that I can find for accuated valves are threaded brass and stainless steel. I did however find tri clamp three way ball valves (but I'm not trying to spend $500 a valve, and I would still like it to be cost effective of the Sabco system). Does anyone know of any problems with using threaded fittings and/or brass for wort flow?