Tank Master Ultraviolet Germicidal units are designed for use with liquid storage tanks as shown the drawing. The units attach to existing liquid storage tanks to provide sanitary storage and disinfection for air and liquid contents. Not recommended to be used in a submerged application over 5 psi. Excellent for water storage tanks, reduce chemical use. Sanitize and kills bacteria, mold, fungus, and algae. Lanps and quartz sleeve should be periodically cleaned to maintain high transmission of UVC rays. All units are available in 220 volt (50/60 htz).