Approved Vendor 60022 Thermal Expansion Tank, 2 gal Tank Capacity, Stainless Steel, 210°F Max. Op Temp RS3542 Work Clamp With 12 Ft Work Clamp With 12 Ft Cable Neck Type Rigid Maximum Current 200 A Welding Processes TIG Welding (GTAW) Cooling Method Air Cooled Gas Valve Included Yes Compatible with Series ArcMaster 400 MST Series Number of Pieces 5 Duty Cycle 60 % Country of Origin United States Material ETP Viton® Fluoroelastomer Rubber Cross Section Shape Round Fractional Width 1 16 Width 0 Expansion tanks for water heaters alleviate excess pressure caused by the normal thermal expansion that occurs when water is heated Operating Temperature 210 °F Precharged Yes Manufacturer Warranty Length 5 yr Standards NSF 61