Process Heating

WilsherCo offers complete process temperature maintenance heat tracing systems from design, materials, to full turnkey services. In many systems, precise maintenance of temperature is essential to the quality of the product or the efficiency of the process. In process temperature-maintenance applications, there is usually a need to control the  viscosity of certain fluids such as fuel oils, acids, waxes, resins and other chemicals at higher temperatures depending on the requirements of a particular chemical. 

Our basic Electric Process Heat Trace Systems include:

  • Self-Regulating Heat trace cable automatically adjusts heat output based on surface temperature. 
  • Mineral-insulated (MI) cables can withstand maintain temperatures over 1000°F (550°C) and exposure temperatures up to 1200°F (650°C). MI construction consists of series resistance wire (conductors) embedded in magnesium-oxide insulation surrounded by a metal sheath. 
  • Electric Traced and Insulated Tubing Bundles can provide a thermally insulated fluid transport line for use in applications requiring temperature maintenance or viscosity maintenance of liquids or gasses. 
  • Thermal controls can manage single and multiple circuits as well as custom control heat trace control panels. We offer a wide variety of mechanical and digital controllers and panels. 
  • Components and accessories include power and splice kits, end terminations (with or without lights), pipe straps, fiberglass tape and caution labels.


  • Flow maintenance — heavy oil movement
  • Process temperature maintenance
  • Loading equipment


  • Ship-specific applications


  • Hot water temperature maintenance
  • Roof and gutter de-icing
  • Grease lines
  • Asphalt transfer
  • Drum (55 gallon) & cylinder heating