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Products Temperature Controllers RO Series Hot Oil Temperature Control Units

Hot Oil Temperature Controllers

Oiltherm RO Series units are designed to work with a wide range of high temperature applications in the 125°F to 575°F range. The Oiltherm assures high velocity oil flow across heater elements for optimum heat transfer and fluid life. The oil is preheated to reduce viscosity before allowing the pump to run. A microprocessor allows customized settings for daily start/stop times and a temperature deviations alarm and a password lockout protects temperature set point.

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Hot Oil Temperature Controllers


  • 6 kW to 36 kW
  • Leak proof centrifugal pump without rotating seals
  • Automatic oil preheat to 100°F
  • 24hour/7day programmable preheat timer
  • Easy-to-read digital display of "To Process" and "Set Point" temperatures
  • Low watt density stainless steel heater elements provide long life and built-in standby
  • Insulated hot oil lines and and reservoir maintain temperature and save energy
  • Control cabinet fan cooling protects control systems and pump
  • Convenient oil fill location allows oil to be added without removing cabinet
  • Oil level safety prevents operation under low oil conditions
  • Stainless steel reservoirs
  • Stainless steel heat exchanger connections for corrosion free operation
  • High temperature safety at 660°F
  • Air-cooled pump requires no cooling water for operation
  • Dual reservoir system includes operating and expansion reservoirs
  • Complete insulation of oil circuit and operating reservoir maintains temperature and saves energy
  • Premium quality solenoid valve assures precise temperatures
  • Low oil level switch prevents operation under low oil level conditions
  • Easy access cabinet with removable top/side panel
  • Four swivel casters make unit easy to move

Available Options

  • Vacuum operation for draining mold at shutdown
  • 5 or 55 gallon drum of oil