The U.V. systems made in AISI 304 stainless steel (or AISI 3l6 if required) with high intensity low voltage U.V.lamp can reduce 99.9% of bacteria and viruses in the fresh water. For high ﬂow exigencies. they are usually mounted after the autoclave and can be supplied with a preﬁltration system to obtain a better efficiency of the U.V. radiations.