About the Honeywell TK300-60 7.6-Gallon Heating Expansion Tank
Get a deal on the Honeywell TK300-60 7.6 Gallon Heating Expansion Tank. An expansion tank absorbs hot water expansion in closed heating systems. They have butyl diaphragms to separate the air from the system water. Pre-pressurized, the tank keeps fluids circulating and maintains minimum pressure.