Boiler System Expansion Tank; Type Vertical; Inlet/Outlet Connection 1-1/4 Inch Female Threaded x 1-1/4 Inch Female Threaded; Tank Material Steel; Temperature Rating 240 Deg F; Pressure Rating 100 PSIG; Tank Capacity 4.4 Gallon; Tank Warranty 5 Year; Diaphragm Type Heavy Duty Butyl; Air Charge Type Factory Pre-Charged; Air Charge Capacity 12 PSIG; Inclusions/Features Projection Welded Air Stem, Air Purger, Air Vent; Application Closed, Hydronic Heating System to Control Fill Pressure and Pressure Build-Up; Applicable Standard ISO 9001
Eliminates the need for a separate, automatic fill valve Strongest tank design featuring deep drawn steel Adjustable to a maximum working pressure Made in USA