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Taco Comfort Solutions’ new flow-through expansion tank is designed to help reduce the environmental conditions necessary for Legionella and other bacteria to flourish. With standard tank volumes ranging from 23 to 528 gallons, the flow-through expansion tank provides precise flow channeling through a patent pending head design. Constructed, tested, and certified to ASME Section VIII Div. 1, these tanks minimize pressure loss, discourage short-cycling, and are retrofittable to meet ASHRAE Standard 188 on existing designs. Standard working pressure is 125 PSI with options for 150 PSI and higher. They are NSF/ANSI 61-G certified and are available with a sight glass for failure detection.