Water Heater Expansion Tank; Type Bladder, Vertical; Applicable Standard ASME, NB, NSF/ANSI 61G, FDA, ISO 9001; Inlet/Outlet Connection 3/4" Threaded x 1/2" Threaded; Tank Material Exterior Red Oxide Carbon Steel; Temperature Rating 280 Deg F; Pressure Rating 150 PSI; Tank Dimensions 16" Diameter x 41-1/4" Height; Tank Capacity 22 Gallon; Diaphragm Type Heavy-Duty Butyl Rubber Bladder; Air Charge Capacity 40 PSI; Options Anchor Clip, Eye Sight Glass; Inclusions/Features Steel Shell, Data Report; Application Commercial, Institutional, Industrial, Hydronic System, Potable Water