Over-the-Side Immersion Heaters engineered for dependable, efficient tank heating across industrial processes. Available in round or L-shaped configurations to match tank geometry and workspace, these heaters deliver targeted heat for process and clean water, lightweight oils, degreasing solutions, mild caustic solutions, and mildly corrosive chemistries such as citric and phosphoric acid.

• Voltage: Factory-wired 3PH; easily re-wired to 1PH in the field
• Wattage options: from 3KW up to high-capacity assemblies
• Elements: Steel or Incoloy® 800 with all wetted parts in compatible alloys
• Watt Density: Standard low-watt-density options (23 W/in²) for oils and solutions; higher watt-density options (48 W/in²) for water and mild caustics
• Housing: NEMA 4 liquid-tight terminal enclosure
• Lead Time: Typically 3–4 weeks
• Corrosion Guide
• Watt Density Guide

Construction:

Tubular heating elements are welded into a liquid‑tight junction box. Power leads run through the riser to a terminal block in the NEMA 4 housing. Units ship wired for three‑phase and can be converted to single‑phase on site. A standard thermowell accepts a 3/8" bulb for an optional thermostat, which can be field installed using enclosure mounting lugs. 4" (102 mm) sludge legs keep elements off the tank bottom and above deposits for longer life and safer operation.

Applications:

Choose round or L-shaped over-the-side configurations based on tank size, shape, and accessibility. Typical uses include heating lightweight oils, mineral oil, degreasing baths, process and clean water, mild caustic solutions (2% max.), and mildly corrosive solutions. Incoloy® and steel sheath options help match media compatibility and corrosion resistance.

Optional Features:

• 304 or 316 Stainless Steel wetted parts; passivated as required
• Electropolished or bright annealed element surfaces (Stainless Steel or Incoloy designs)
• NEMA 1 or NEMA 4/7 explosion‑resistant terminal housings
• Fixed/adjustable riser brackets, mounting flanges, and right‑angle risers
• External power wiring: flexible cord/plug, armored cable, wire braided or plain lead wire
• Single or double pole thermostats; process or hi‑limit thermocouples in thermowell
• Hi‑limit MI thermocouple on sheath
• Special riser and sludge leg heights; up to 12 elements per assembly

Why choose these immersion heaters?

• Versatile fit: Round or L-shaped designs optimize immersion and serviceability
• Media‑matched performance: Low and high watt density options to protect fluids
• Durable build: Incoloy® 800 and steel elements with liquid‑tight construction
• Control‑ready: Integrated thermowell and field‑installable thermostat options
• Industrial protection: Weather‑resistant NEMA 4 enclosure