Cleaning Ball Valves
Most brewers are scrupulous when it comes to cleaning brewing equipment. But, the ball valve is often over looked. Running water through a ball valve or flushing it with sanitizer is not sufficient. Ball valves have pockets which trap the sweet wort allowing bacteria to grow between uses. The heat of the boil is not sufficient to kill the trapped bacteria. So, for best result and no surprises with an infected batch, it is recommended that the ball valve be removed and rinsed thoroughly after each use and boiled before it is reattached before the next brew.