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FP Cast Line Heaters

EXHEAT’s range of cast line heaters provide a compact and efficient heating solution for constant flow liquids or gases. Cast-in circulation heaters are increasingly being selected over traditional pressure vessel type heaters for the following reasons:

  • Cost effective
  • Uniform heat distribution
  • Available on shorter lead times
  • Resistant to any internal vibrations
  • Compact size with a reduced footprint
  • Increased safety due to the encasement
  • Suitable for high process design pressures
  • High reliability and increased service life
  • Excellent heat transfer and residual heating from the aluminium casting

The design incorporates electric heating elements and an indirect process heating coil embedded within marine grade cast aluminium. This provides excellent heat transfer properties combined with low surface temperatures.”

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  • Flameproof IP66 rated terminal enclosure
  • Cellular glass insulated with stainless steel cladding
  • Design pressure up to 660 barg
  • Design temperature up to 400 ° C
  • Sensors for process control and overtemperature protection: RTD Pt100, thermocouple type K or thermostat
  • Vertical or horizontal mounting on the wall or floor
  • Several heating elements enable step control, alternatively a semiconductor relay or thyristor control can be used
  • Pipe coil materials: 316L stainless steel, Duplex S31803, Super Duplex S32760 (others included Nickel alloys available on request)
  • Process connections are available as a standard flange or cutting ring connection or compression fitting

  • Air
  • Biogas
  • CO2
  • Natural gas
  • Nitrogen
  • Instrument air
  • Sealing gas, fuel gas
  • Steam
  • Solvent
  • Paint heating
  • Pasteurization
  • Pressure control stations (Joule-Thomson)


  • ATEX / IECEx Ex II 2 G / DEx d IIC T1 to T6 Gb
    Ex tb IIIC T85 to T450 ° C Db IP66
  • EN / IEC
    EN / IEC 60079-0, EN / IEC 60079-1, EN / IEC 60079-7,
    EN / IEC 60079-31
  • CE mark
    In accordance with the valid EC guidelines
  • Other
    CCOE, KGS, Inmetro, CSA, CU TR (EAC), CEC / NEC 500


  • Marine grade aluminium Gr. LM25 (Al-Si7Mg)


  • Cellular glass insulation (-260°C / +430°C)


  • Stainless steel ASTM A366 TP316 2B finish

Process Coil

  • Stainless steel Gr. 316L Duplex S31803
  • All with NACE MR1075 compliance


  • XX Small: Hairpin type 316/L sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
  • X Small: Cartridge type stainless steel 316/L sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
  • Small / Medium / Large: Hairpin type nickel alloy N08800 (Alloy 800) sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide


  • XX Small: up to 3kW
  • X Small: up to 10kW
  • Small: up to 24kW
  • Medium: up to 40kW
  • Large: up to 70kW

Design Code

  • Designed SEP (Sound Engineering Practice) in accordance with the PED for installation within the European Union; designed in accordance with ASME B31.3, EN 13445 or PD5500


  • Up to 690V (subject to duty)


  • Natural stainless steel or painted mild steel
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