DFX250-3

Cast Circulation Heater For Chemical Application

An engineer with a unique chemical heating application found Durex's website on the internet and contacted us regarding heating a mixture of chemicals used in a Thermal Fogging Machine. John Sidbeck, a Durex application engineer, called the potential customer to discuss the electric heating application in detail.

The application was to pump a premixed blend of 80% dipropylene glycol solvent and 20% Fungicide with the following specifications:
  • Heat from ambient (34-105F°) to maximum 212°F at a maximum flow rate of 2-3 gallons per hour
  • Flash point: 248°F
  • Auto-ignition temperature: 700°F
  • Minimum ambient temperature 34°F
  • Particle size distribution for the fungicide

After detailed discussion, it was determined that the maximum power requirement would be 940 watts. John recommended Durex' DFX250 Cast Circulation heater as a solution.  The DFX250 is a robust low mass circulation heater that provides a quick thermal response. The cast circulation heater assembly is a designed integral 316 stainless steel tube and tubular heater that are in a helix layout. This design maximizes heat transfer in variable flow rate gas and fluid applications.


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Durex Industries designs, engineers & manufactures electric heatersprocess heating systemstemperature sensors and temperature controls.