Screw plug Heater

Industrial immersion heaters using Incoloy sheathed heating elements and adjustable rod thermostats.

Application: Hot Water heater/Boiler

Features:

  • Loadings available from 3 – 12 kW
  • Wired in single phase or 3 phase
  • Control thermostat in Incoloy 840 pocket
  • Incoloy 840 Industrial heaters with SUS terminal enclosure
  • Immersed lengths from 200mm to 800mm
  • Sheath: Incoloy 840
  • Thermostat: All heaters come with rod thermostats supplied
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Description

Screw Plug Heaters | Compact, High-Efficiency Heating for Industrial Fluids

Engineered for precision and durability, our screw plug immersion heaters deliver rapid, uniform heating for tanks, reservoirs, and process systems. Ideal for water, oil, and chemical solutions, these heaters combine rugged construction with efficient thermal transfer.

⚙️ Key Features & Construction

  • Robust Heating Element: Nickel-chromium resistance wire encased in high-grade magnesium oxide (MgO) insulation ensures fast heat-up and long service life.
  • Screw Plug Mounting: Available in standard NPT sizes (1″, 1.25″, 2″) for easy installation into threaded openings on tanks and vessels.
  • Sheath Material Options: Choose from stainless steel, Incoloy®, or copper sheaths to match fluid compatibility and corrosion resistance needs.
  • Precision Thermowell Integration: Optional built-in thermowell allows for accurate temperature control via thermostats or sensors.

Performance Benefits

  • Direct Fluid Contact: Immersion design maximizes heat transfer efficiency and minimizes energy loss.
  • Compact Footprint: Ideal for confined spaces or retrofit applications.
  • Custom Watt Densities: Tailored to fluid type and volume for optimal performance and longevity.
  • Safe & Reliable: UL-listed components and moisture-resistant terminal enclosures ensure safe operation in demanding environments.

Applications

Perfect for:

  • Industrial fluid heating (water, oils, solvents)
  • Chemical processing tanks
  • Hydraulic reservoirs
  • Food-grade and pharmaceutical systems
  • Freeze protection in outdoor tanks

Features

Water Heater (7.75W/cm2) Oil Heater (3W/cm2)
Number of Elements KW Immersion Length (mm) Number of Elements KW Immersion Length (mm)
1 1 215 1 1 215
1.5 300 1.5 300
2 2 390 2 390
2.5 470 2.5 470
3 560 3 560
4 725 4 725
5 895 5 895
6 1070 6 1070
2 2 215 2 2 215
2.5 255 2.5 255
3 300 3 300
2.5 340 2.5 340
4 390 4 390
5 470 5 470
6 555 6 555
8 725 8 725
10 895 10 895
12 107 12 107
3 3 215 3 3 215
3.8 255 3.8 255
4.5 300 4.5 300
5.3 340 5.3 340
6 390 6 390
7.5 470 7.5 470
9 555 9 555
12 725 12 725
15 895 15 895
18 107 18 107

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