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.

Engineered Cast Heater Features

  • Certified to ATEX, IECEx or CSA standards
  • Certified under EN/IEC 60079-0, 60079-1, 60079-7, 60079-31 and standards per CEC/NEC 500
  • Flameproof IP66 rated terminal enclosure
  • Cellular Glass insulated with stainless steel cladding
  • Maximum design pressure and temperature of 660 barg at up to 400°C
  • Process control and over-temperature protection sensors: RTD Pt100, thermocouple type K or thermostats
  • Wall or floor, vertical or horizontal mounting
  • Multiple heating elements allow for step control; alternatively, solid state relay or thyristor control can be employed
  • Coil materials: stainless steel 316L, duplex S31803, super duplex S32760 (others, including nickel alloys available on request)
  • Process connections available using standard flanged or compression joints

 

 

 

 

 

Engineered Cast Heater Specifications

Certifications ATEX / IECEx EX logo II 2 G/D
Ex d IIC T1 to T6 Gb
Ex tb IIIC T85 to T450°C Db IP66
EN/IEC 60079-0, EN/IEC 60079-1, EN/IEC 60079-7, EN/IEC 60079-31
CCOE (India), KGS (Korea), Inmetro (Brazil)
CSA (Canada and US), CU TR (EAC)
Casting Marine grade aluminium Gr. LM25 (Al-Si7Mg)
CE Marked In accordance with relevant EC Directives
Cladding Stainless steel ASTM A366 TP316 2B finish
Delivery From 10 weeks, depending on options
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
Duty XX Small cast heater: up to 3kW
X Small cast heater: up to 10kW
Small cast heater: up to 24kW
Medium cast heater: up to 40kW
Large cast heater: up to 70kW
Elements XX Small cast heater: Hairpin type 316/L sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
X Small cast heater: Cartridge type stainless steel 316/L sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
Small / Medium / Large cast heaters: Hairpin type nickel alloy N08800 (Alloy 800) sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
Enclosure Stainless steel or painted mild steel
Insulation Cellular Glass insulation (-260°C / +430°C)
Process Coil Stainless steel Gr. 316L
Duplex S31803
Super duplex S32760
Others, including nickel alloys available on request
All with NACE MR1075 compliance
Voltage Up to 690VAC

Standard Cast Heater Features

  • Certified to ATEX, IECEx, CSA or other standards
  • Certified under EN/IEC 60079-0, 60079-1, 60079-7, 60079-31 and standards per CEC/NEC 500
  • Flameproof IP66 rated terminal enclosure
  • Cellular Glass insulated with stainless steel cladding
  • Maximum design pressure and temperature of 430 barg at up to 400°C
  • RTD Pt100 sensors for process control and over-temperature protection
  • Wall or floor, vertical or horizontal mounting
  • Multiple heating elements allow for step control; alternatively, solid state relay or thyristor control can be employed
  • Process connections available using standard flanged or compression joints

Standard Cast Heater Specifications

Certifications ATEX / IECEx EX logo II 2 G/D
Ex d IIC T1 to T6 Gb
Ex tb IIIC T85 to T450°C Db IP66
EN/IEC 60079-0, EN/IEC 60079-1, EN/IEC 60079-7, EN/IEC 60079-31
CCOE (India), KGS (Korea), Inmetro (Brazil)
CSA (Canada and US), CU TR (EAC)
Casting Marine grade aluminium Gr. LM25 (Al-Si7Mg)
CE Marked In accordance with relevant EC Directives
Cladding Stainless steel ASTM A366 TP316 2B finish
Delivery From 6 weeks
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
Duty XX Small cast heater: up to 3kW
X Small cast heater: up to 10kW
Small cast heater: up to 24kW
Medium cast heater: up to 40kW
Large cast heater: up to 70kW
Elements XX Small cast heater: Hairpin type 316/L sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
X Small cast heater: Cartridge type stainless steel 316/L sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
Small / Medium / Large cast heaters: Hairpin type nickel alloy N08800 (Alloy 800) sheathed with 80/20 nickel chrome resistance wire embedded in high purity magnesium oxide
Enclosure Natural stainless steel or painted mild steel
Insulation Cellular Glass insulation (-260°C / +430°C)
Process Coil Stainless steel Gr. 316L
Duplex S31803
All with NACE MR1075 compliance
Voltage Up to 690V (subject to duty)
Optional Accessories Sunshade: 316 stainless steel (120 degree adjustment for X Small cast heater)