... tanks and pressurized vessels, flange heaters are used for heating liquid mediums or other specific types of liquids (water, ... oil, heat transfer fluid, and corrosive solutions), and for heating gases (steam, vapors etc.). Available special sizes, wattages, and ... you order ,please specify:• Flange size and pressure ratings• Heating element watt density• Sheath material (corrosive or non corrosive) ...