Honeywell TX-12 4.4 Gallon Thermal Expansion Tank

Product Features

• Heavy duty butyl rubber diaphragm (FDA approved) isolates water from air.
• Polypropylene liner, 100% non-metallic, non-corrosive water reservoir.
• Prevents water hammer.
• Maintenance free.
• Protects water heater from harmful pressure cycling.
• Allows storage of expanded water with no increase in system pressures.
• Prevents backflow when supply pressure falls below system pressure.