Designed for use in closed, potable hot water systems, Therm-X-Span accepts expanded water as system temperature rises. This hot water is returned to the system when demand occurs. A thermal expansion tank, like Therm-X-Span, is essential in a closed system to protect your water heater.
THERM-X-SPAN T-12 Expansion Tank (4.4 Gallon Volume)
Max Working Pressure:150 psig
Max Operating Temp:200 F
Tank Diameter:11 inches
Tank Height:15 inches