Multicell Heaters

Zesta Watlow Multicell Heaters
Zesta Watlow Multicell Heaters
Zesta Watlow Multicell Heaters
Zesta Watlow Multicell Heaters
The advanced design of the multicell insertion heater from Watlow offers three major advantages: extreme process temperature capability, independent zone control for precise temperature uniformity, and loose fit design for easy insertion and removal.

Watlow: Your Heat Solutions Resource Brochure (EN)
Watlow: Vos Solutions de Chauffage Brochure (FR)
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Product Features

Multiple, independently controllable zones
  • Allows process temperature uniformity not possiblewith any other single-sheathed heater
Radiant design of heater
  • Allows for loose insertion in boiling holes and piping holes
  • Permits easy removal and replacement with minimal down time since it will not bind or seize in the hole
Oxidized sheath
  • Provides high emissivity and improves the heater’sperformance as oxidation increases
Individually metal-sheathed coils swaged into a larger, high-temperature alloy outer sheath
  • Provides maximum protection against element burnout through the outer sheath
Quick disconnect plug and jack
  • Permits fast replacement of individual elements whilethe press stays at operating temperature
Special bending capabilities
  • Solves unusual machinery needs and keeps leads away from heated zones
Flexible leads up to 842°F (450°C)
  • Protects termination from high temperature environment

Ordering information

Multicell Heater Catalogue Section


  • Hot isothermal forming
  • Soil remediation
  • Hot forging dies
  • Heated platens
  • Super plastic forming
  • Heated platens (single and multiple zones)
  • Heat treating processes
  • Super plastic forming with diffusion bonding
  • Polysilicon ingots
  • Hot gas generation
  • Hazardous waste treatment systems