The individual components of an industrial circulation heater are often packaged in one complete unit for heating performance. The screw plug or flange heater assembly is connected to a mating tank or pressure vessel. This system is then ready to heat forced-circulation air, gases and liquids through in-line or side-arm operations. These are direct-contact, industrial electric heaters where fluids are driven past the heating elements to achieve desired temperatures. In choosing self-contained immersion heaters our customers select their preferred sheath material, terminal housing, vessel connectors and temperature controls. Our high quality industrial circulation heaters deliver rapid responses and even heat distribution.