Your browser is out of date.

You are currently using Internet Explorer 7/8/9, which is not supported by our site. For the best experience, please use one of the latest browsers.

Pre-Engineered Hot Oil Systems


The Pre-Engineered HOS550 Series (formerly the KM Series) offers fast delivery and Safe, Reliable Performance in a compact and industrial grade modular package with maximum operating temperatures of up to 550°F.  

Designed for use with hot oil heat transfer fluids, HOS550 systems include a centrifugal pump, electric heater assembly, and control panel. The pre-engineered design includes inherent safe-design practices while retaining cost efficiency. 

Packaged, skid-wired, and assembled on a drip-proof, seal-welded plate-and-channel fluid containment base, each system undergoes a Factory Acceptance Test in accordance with HEAT standard practice prior to shipment. 

Made-to-order designs offer reduced lead-times with limited models in stock for immediate shipment. 

  • 40kW-240kW Electric Heaters Available
  • 480 VAC, 3-Phase, 60 Hz Power Supply
  • Flow rates from 35 GPM to 205 GPM
  • 18 to 60 Gallon Expansion Tanks Available
  • ANSI 150lb. Flange Piping Connections 
  • Indoor/Outdoor Installation
  • Wiring per NFPA 70 and NFPA 79, NEC Codes, UL Standards
  • ASME Code Stamped Heater Chamber
  • Mechanically Sealed Pump Designs
  • All-Welded, ASME B31 Piping Materials
  • Cooling Modules Available 
  • Non-Wicking Cellular Glass Insulation
  • Safety Interlocks: 
    • High Heater Temp Switch
    • Low Level
    • Low Pressure 
  • Building Materials
  • Furniture
  • Metals
  • Paper/Packaging/Converting
  • Plastic/Rubber
  • Textiles/Fabrics/Nonwovens 
Item (Product) NameMax. Design Temperature (Deg-F)power supplyHeater Size (kW)Pump Flow Rate (GPM)Pump Head Pressure Design (ft-TDH)Expansion Tank Capacity (Gallon)Learn More
HOS550-40-MP-483550480VAC, 3 Phase, 60Hz403512018, 30, 40, 60Details
HOS550-80-MP-483550480VAC, 3 Phase, 60Hz808012518, 30, 40, 60Details
HOS550-120-MP-483550480VAC, 3 Phase, 60Hz12012012018, 30, 40, 60Details
HOS550-160-MP-483550480VAC, 3 Phase, 60Hz16016014018, 30, 40, 60Details
HOS550-200-MP-483550480VAC, 3 Phase, 60Hz20020014018, 30, 40, 60Details
HOS550-240-MP-483550480VAC, 3 Phase, 60Hz24020014018, 30, 40, 60Details
HOS550-40-DN-483550480VAC, 3 Phase, 60Hz404015018, 30, 40, 60Details
HOS550-80-DN-483550480VAC, 3 Phase, 60Hz808014718, 30, 40, 60Details
HOS550-120-DN-483550480VAC, 3 Phase, 60Hz12010014018, 30, 40, 60Details
HOS550-160-DN-483550480VAC, 3 Phase, 60Hz16016013418, 30, 40, 60Details
HOS550-200-DN-483550480VAC, 3 Phase, 60Hz20020012518, 30, 40, 60Details
HOS550-240-DN-483550480VAC, 3 Phase, 60Hz24020012518, 30, 40, 60Details
Have Questions?

Contact Our Experts

Our expert sales engineers can help you find the right custom temperature control equipment for your application.

*denotes a required field.