Thermal Expansion Tank;Type Vertical, Full Acceptance Bladder;Applicable Standard ASME, NSF/ANSI 61, IS0 9001;Inlet/Outlet Connection 2" Female Threaded x 2" Female Threaded;Tank Material Red Oxide Primer Steel;Temperature Rating 240 Deg F;Pressure Rating 125 PSI;Tank Dimensions 30" Diameter x 73" Height;Tank Capacity 158 Gallon;Tank Warranty 1 Year;Diaphragm Type Heavy Duty Butyl;Air Charge Type Factory Pre Charged;Air Charge Capacity 55 PSI;Inclusions/Features Schrader Air Valve with EPDM Seat;Application Closed, Potable Water System