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Combo welded tank kit, equipped with butyl diaphragms to separate the air from the system water. Pre-pressurized at 12 psi, the tank keeps fluids circulating and maintains minimum system pressure. Honeywell tanks resist waterlogging, loss of pressure through relief valve spills, loss of BTUs and reduce circulator running time. Use the super efficient Honeywell SuperVent or air vents to remove air and micro-bubbles from the system for maximum performance.
The Honeywell expansion tank maintains pressure in the system and utilizes the smallest possible space.