I recently purchased a Marchisio pump model EEM20 which pumps 37liters per minute. I purchased it from a place who supplies all of the local wineries and many from far away.I asked the owner if the pump was safe for wine and he told me that it is the only pump he sells and that Bronze is made of different alloys than Brass and it was perfectly safe to use with wine. Does anyone know if that is true, because I read that you should not use Brass with wine because it contaminates the wine.