The patented PURA® UV20 Series is ideal for whole house water treatment. In addition to disinfection, the double and triple models provide filtration for the removal of sediment and chemical contaminants. These whole house ultraviolet disinfection systems are ideal for most residential applications. Port size of all vessels is 3/4", allowing for more than adequate flow rates for most homes. The UV20 series has proven to be PURA’s most popular product line and has created an industry standard in whole-house disinfection.