» For process heating requirements up to 700°F (371°C)
» Available up to 600 kW and from 5 to 120 gpm
» Heating and/or cooling with single, dual or triple zone configurations, and stationary designs
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HTF ST Series

Mokon's HTF ST Series heat transfer oil systems are designed and built to customer specifications providing accurate temperature control up to 700°F (371°C) and up to 600 kW of heating capacity. They feature low-watt density electric heating mounted on a structural steel frame. This heater design, along with an all-welded construction, reduces internal piping which limits potential leak points and results in reduced frame size and floor space required. Systems are available in single and multiple zone configurations, with pumping capacities up to 120 GPM and come completely pre-wired.

Mokon oil systems offer many advantages when using heat transfer fluids over steam including cost savingslower operating pressuresgreater energy efficiency and safer operation (see chart below). *Note the high steam pressures required whenever high process temperatures are specified.

kW BTU/hr.
100 341,200
125 426,500
150 511,800
200 682,400
250 853,000
300 1,023,600
350 1,194,200
400 1,364,800
450 1,535,400
500 1,706,000
600 2,047,200
Steam Pressure vs. Heat Transfer Fluids
Saturated Steam Pressure PSIA* Saturated Steam Pressure
Temperature F° (C°) Mokon 
250  17   400 (205) Typically 




PSIA (4 Bar)
500 34 467 (242)
750 52 511 (266)
1000 69 545 (285)
1500 103 596 (313)
2000 138 636 (335)
2500 172 668 (353)
3078 213 700 (371)

Product Features

  • Thermal fluid designs up to 700°F (371°C)
  • Heating capacities up to 600 kW (2,047,200 Btu/Hr.)
  • Designed and built to customer specifications
  • Cooling circuits available
  • Water or air-cooled high temperature heavy-duty pumps
  • Digital PID electronic indicating control with solid state relays
  • Sturdy steel frame
  • All-welded construction
  • Expansion tank
  • NEMA rated electrical enclosure, UL 508A panel approval
  • Meets NFPA 79 electrical safety standards



Mokon offers a variety of options and accessories to meet specific customer needs. Please contact Mokon for more information.


Features of Standard and Optional Controls
A variety of controls are available from Mokon to enhance the high performance of our systems. From solid state to microprocessor based, with communication capabilities to PLC type controls, Mokon can provide the type of control package right for your process. 

Eurotherm 3216 Series
The Eurotherm 1/16 DIN (3216) microprocessor controller is operator friendly and easy-to-use. Standard features include a microprocessor PID controller for the highest accuracy in temperature control, a dual LCD display that shows set point and actual fluid temperature, and scrolling text messages that deliver plain language messages to let users know exactly what is happening to the process. There are optional 1/8 or 1/4 DIN controllers available, with high/low deviation alarm, remote set point and retransmission and serial communication. A five-year warranty comes standard with the controller.

Click on the links below for more information on the Eurotherm 3200 Series controllers:
3216 Spec Sheet 
3200 Series Manual
Custom Controls
Mokon’s ability to meet customers’ specific requirements is seen not only in custom system designs, but also in controls. Our engineers can custom design a control package that meets your specific processing needs, from brand name controls, to direct computer/host machine interfacing. All of which can be expected with the same quality and durability that our customers expect from our complete line of temperature control systems.

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