Potable Hot Water Tank, 2.1 Gallon, 150 Psi Maximum Working Pressure, 200 Degree Maximum Operating Temperature, 55 Psi Factory Precharge, PTA-5

6.4 Gallon Tank Volume, 150 PSI Max Working Pressure, 200F Max Operating Temperature, ASME Construction, Lead Free Potable Hot Water Diaphragm Expansion Tank Factory Precharged to 55 PSI (Model PTA-12)

8.0 Gallon Tank Volume, 150 PSI Max Working Pressure, 200F Max Operating Temperature, ASME Construction, Lead Free Potable Hot Water Diaphragm Expansion Tank Factory Precharged to 55 PSI (Model PTA-20V)

14.0 Gallon Tank Volume, 150 PSI Max Working Pressure, 200F Max Operating Temperature, ASME Construction, Lead Free Potable Hot Water Diaphragm Expansion Tank Factory Precharged to 55 PSI (Model PTA-30V)