Screw Plug Immersion Heaters – Construction Styles

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General Purpose Hot Water Tank Heater

  • 1″-111⁄2 NPSM Brass Plug with O-Ring gasket (NPT optional)
  • Incoloy® 800 Tubular Element
  • 10-32 plated screw terminals
  • 90°C epoxy seal standard
  • Optional ceramic terminal block for high temperature applications
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Self-Contained Screw Plug Heater

This immersion heater is specifically designed for commercial dishwashers and sterilizing equipment. However, due to the unique construction characteristics of these heaters, they are readily adaptable for use in other water heating applications. The heating elements are prewired to a Definite Purpose contactor, thermostat and high limit cutout. The thermowell is located at the top of the element bundle for fast shut-off response, preventing overheating due to low water level conditions.

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Standard Screw Plug Heater

  • Four Standard Screw Plug Sizes—1″, 1-1/4″, 2″, 2-1/2″
  • Recompacted element bends restore insulation resistance after forming
  • Corrosion-Resistant electrical wiring hardware
  • Silicone resin element seal standard
  • Special sheath materials available
  • Special straight bulkhead or European thread fittings available
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