Description Thermal Expansion Tank Type In-Line Inlet / Outlet Connection 3/4 Inch Female Threaded x 3/4 Inch Female Threaded Tank Material Urethane Top Coated Steel Tank Inner Lining Antimicrobial Temperature Rating 200 Deg F Pressure Rating 150 PSIG Tank Dimensions 11 Inch Diameter x 15 Inch Height Tank Capacity 4.4 Gallon Tank Warranty 5 Year Diaphragm Type Heavy Duty Butyl Air Charge Type Factory Pre-Charged Air Charge Capacity 50 PSIG Inclusions / Features Projection Welded Air Valve, Turbulator Water Circulator, Stainless Steel System Connection Application Closed, Potable Water System Applicable Standard IAPMO R and T, ISO 9001, NSF / ANSI 61 Lead-Free Resources:AMTROLE00197_3.pdfAMTROLINST00051.pdfAMTROLE00195_1.pdf