Inline Heater

Inline Circulation Heater

Circulation heaters provide a means to install electric heating with a minimal amount of time and labor. This is accomplished by combining heating elements, vessel, insulation, terminal enclosure, mounting brackets and inlet and outlet connections into a complete assembly.

Made from NSP screw plug and ANSI flange heater assemblies mated with a pressure vessel (tank), circulation heaters are designed to heat forced-circulation air, gases or liquids. Ideal for in-line operations, it direct fluids past heating elements, to deliver fast response and even heat distribution.

We can meet your circulation heater assembly needs with made-to-order units. Made-to-order units can be made from a wide range of heating element sheath materials, wattages, vessel sizes and materials, pressure ratings, terminal enclosures and controls.


  • Water (Deionized/Demineralized/clean/process, industrial water rinse tanks)
  • Oil (Crude, asphalt, hydraulic oil, lubricating oil)
  • Air (Nitrogen/hydrogen/steam)


  • Heater Watt density to 14W/cm2
  • Voltage from 230-480V
  • ANSI Flange pressure class 150
  • Inlet/Outlet connection: Threaded BSP/ flange connection
  • Rating to 600 Lbs pressure class.
  • Incoloy sheath temp to 870°C
  • IP65 enclosure
  • Protection Thermostats
  • Process Temperature Thermocouples
  • High temperature thermal insulation
  • Protective SUS304 Steel Jacket
  • Support saddles/ mounting stands.