Over-the-Side Immersion Heater

Over-the-Side Immersion Heater
Over-the-side heaters are ideal for heating water, oils, solvents, salts and acids. Application versatility is enhanced with optional sheath materials, kilowatt ratings, terminal enclosures and mounting methods. The L and O shaped “installed-from-the-top” heaters slide easily into tanks, with the heated portion immersed along the side or at the bottom. The drum immersion heaters are designed for direct immersion in a standard 55-gallon steel drum. Watlow vertical loop immersion heaters are well-suited for open tank applications.

Performance Capabilities

  • Alloy 800 sheath element watt densities up to 60 W/in² (9.3 W/cm²)
  • Wattages up to 50 kilowatts
  • Voltages up to 600VAC

Features and Benefits

  • Rugged, light-weight construction resists damage during installation or removal
  • 0.475 in. (12 mm) diameter WATROD heating elements offers one- or three-phase operation
  • Repressed (recompacted) WATROD hairpins maintain MgO density, dielectric strength, heat transfer and heater life
  • Four inch (100 mm) sludge legs keep heating elements off the tank’s bottom to help avoid being covered with sediment
  • RTV riser seal prevents moisture from infiltrating electrical areas
  • Standardized size 1 in. (25 mm) conduit openings facilitate wiring
  • SRG insulated flexible lead wires, rated to 390°F (200°C) allow factory or field wiring for three- or one-phase operation
  • Riser materials are compatible with element sheath materials such as stainless steel with alloy 800 sheath and steel with steel sheath to meet varying application needs, ensuring ease of use
  • Integral thermowells provide convenient temperature sensor insertion and replacement without draining the fluid being heated
  • Moisture resistance standardizes enclosures
  • UL® and CSA component recognition 480 and 600VAC maximum under file numbers E52951 and 31388 respectively

Typical Applications

  • Water heating
  • Solvents
  • Freeze protection
  • Salts
  • Viscous oils
  • Caustic solutions
  • Storage tanks
  • Paraffin
  • Degreasing tanks

Download the Over-the-Side Immersion Heater Datasheet


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