www.phcppros.com/articles/16234-taco-comfort-solutions-flow-through-expansion-tank

Taco Comfort Solutions Flow-Through Expansion Tank
September 27, 2022
Taco offers a new flow-through expansion tank to help reduce environmental conditions necessary for Legionella/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.
Taco Comfort Solutions