CAST-X 4000 Circulation Heater

With high-pressure compatibility and power to 60 kW, CAST-X 4000 fits many oil & gas processes.

Product picture of CAST-X 4000 circulation heater models manufactured by Cast Aluminum Solutions


  • Dry Gas Seal Applications
  • Pharmaceutical Manufacturing
  • Oil and Water Separation
  • Heating for Large Scale Beverage Processing
  • Steam Generation and Superheating
  • Methanol to Olefin Conversion


  • 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



  • 12.5 kW Total to 60 kW Total
  • Voltage Range: 208 - 575 V
  • Max Line Current: 50 A per circuit


  • 1.0” OD (25.4 mm)
  • .083” Wall (2.1 mm)
  • Overall Process Tube Length: 212” (5384 mm) each
  • 316L Stainless Steel (standard)
  • Inconel (optional upgrade)
  • Passivated or Electro-Polished (optional upgrades)
  • Max Pressure: 2450 psi (169 bar)


  • NEMA 4 (moisture-resistant)
    NEMA 7 / ATEX (explosion-proof)

Max Working Temperatures:

  • NEMA 4 (moisture-resistant): 572°F (300°C)
  • NEMA 7 / ATEX (explosion-proof): 662°F (350°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
  • RTDs (resistance temperature detectors)

Available Accessories:

  • Insulating Jackets
  • Compression Fittings

Download the
CAST-X 4000
Technical Brochure

Temperature and Pressure Charts

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Dimensional Drawings

Wiring Diagrams

Detailed Images

CAST-X 4000 Circulation Heater Part Numbering System

Quality feature and product configuration data for CAST-X 4000 Circulation Heater made by Cast Aluminum Solutions.

Building a CAST-X 4000 Part Number:
Use the tables below to build each section of your CAST-X 4000.  After assigning letters/numbers for each applicable section, you will have a complete part number, ready to quote.
For assistance, contact CAS directly.

CAST-X 2500 In line heaters have many voltage and power options, up to 60 kilowatts.
Many CAST-X 2500 in line heaters are available with water-proof and explosion proof enclosures.
High limit switches for CAST-X 2500 in line heaters are shows in this image.
Thermocouple options for CAST-X 2500 in line heaters are seen in this image.
CAST-X 2500 in line heaters are available with stainless steel tubes, Inconel tubes and electropolished or passivated tube options for medical and sterile applications.
Machining options for CAST-X 2500 in line heaters can be found here.
Custom flowtubes can be ordered here for CAST-X 2500 in line heaters from Cast Aluminum Solutions.
Accessories for CAST-X 2500 in line heaters can be ordered using this table.