The 3G UV Wastewater Disinfection Unit from Salcor Inc. is designed for use in residential, commercial and municipal applications. It is UL certified NEMA 6P “floodproof,” and NSF/Washington State Protocol pathogen six-month tested (with 20 different upstream treatment units). A rating to 9,000 gpd gravity flow makes it a reliable building block for larger water recovery/reuse systems, according to the company. Installed 12-unit parallel/series arrays assembled with ABS pipe fittings are disinfecting systems of more than 100,000 gpd. Gravity flow is equalized without distribution boxes. Identical modular units increase plant reliability and reduce spare parts inventory, facilitating expansion. Each unit has a foul-resistant Teflon lamp covering, two-year lamp, easy installation and minimal annual maintenance. 760/731-0745.