T-12 Amtrol THERM-X-SPAN Expansion Tank, 4.4 Gallon
The Amtrol THERM-X-SPAN T-12 Expansion Tank has a steel shell, plastic liner, and rubber diaphragm with a brass system connection. The maximum operating temperature is 200ºF and the maximum working pressure is 150 PSIG. Unit comes with a 40 PSIG factory precharge.