CAST-X 500 Circulation Heater

This heater is very compact, easily integrated into machines, medical devices and laboratories.

Many varieties of CAST-X 500 are shown here, including products for fuel heating, gas & diesel warming, and water temperature increasing.


  • Pre-Heating of Oils & Fuels (liquid or gas)
  • Heating of Beverages & Foodservice Liquids
  • Warming of Inks & Coatings for Converting Industry
  • Sample Heating for Analytical Instruments
  • Laboratory Applications
  • Medical Device Applications


  • Fluid Path has No Contact with Heating Elements
  • Heated Media is Isolated in Seamless 316 Stainless Steel Tubes
  • Allows for Safe Heating of Explosive Gases & Flammable Liquids
  • Excellent Performance in High-Pressure Applications
  • Suitable for Use with Sterile and Zero Contaminant Processes
  • Compatible with Standard Controls (PID, PLC, Multi-Loop, etc.)
  • Small Size Enables Easy Integration into Larger Machines
  • Self-Draining Flow-Tubes, and Long-Life Heating Elements



  • Up to 1500 W
  • Voltage Range: 110 - 240 V
  • Max Line Current: 12.5 A


  • .250” OD (1/4") (6.3 mm)
  • .035” Wall (.89 mm)
  • Overall Process Tube Length: 84” (2133 mm)
  • 316L Stainless Steel (standard)
  • Inconel (optional upgrade)
  • Passivated or Electro-Polished (optional upgrades)
  • Max Pressure: 4000 psi (275 bar)


  • No Enclosure
  • NEMA 1 (general-purpose/dust-proof)
  • NEMA 4 (moisture-resistant)
  • NEMA 7 (explosion-proof)

Max Working Temperatures:

  • No Enclosure: 392°F (200°C)
  • NEMA 1 (dust-proof/general-purpose): 250°F (121°C)
  • NEMA 4 (moisture-resistant): 250°F (121°C)
  • NEMA 7 (explosion-proof): 392°F (200°C)
  • Published temperatures are for housing at 12 o’clock position;
    Higher temps may be possible at 6 o’clock position. See factory for details.


  • K or J Type Thermocouples Standard
  • Snap-Action High-Limit Thermostat
    (on no housing version)

Available Accessories:

  • Insulating Jackets
  • Compression Fittings

Temperature and Pressure Charts

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Dimensional Drawings

Wiring Diagrams

Detailed Images

CAST-X 500 Circulation Heater Part Numbering System

This image shows a product numbering key for CAST-X 500, which can be used as a fuel warmer for oils, diesel or benzene in automobiles or aerospace engines.

Building a CAST-X 500 Part Number:
Use the tables below to build each section of your CAST-X 500.  After assigning letters/numbers for each applicable section, you will have a complete part number, ready to quote.
For assistance, contact CAS directly.

This chart shows the CAST-X circulation heater, which is a type of fuel heater for diesel, oil and aerospace, rocket and jet fuels.
This chart demonstrates the various electrical enclosure options for the CAST-X 500 fuel heater, which is an inline circulation heating device for jet fuels and petroleum products.
This graph shows the high-limit switch options associated with the CAST-X 500 fuel heater, which is an electric circulation heater manufactured by Cast Aluminum Solutions.
This table shows the metric mounting options for the CAST-X 500 fuel heater, which is operated as an inline heating device for diesel liquids, flammable oils, and rocket propellant.
This image shows the custom tube and electric components for the CAST-X 500 fuel heater, which is available worldwide through purchase at Cast Aluminum Solutions.
Here is shown the many accessories available on the CAST-X 500 fuel heater, including insulating jackets and compression fittings.