Watlow Tubular Heater Model BHNA25E3
The Watlow BHNA25E3 is a heavy-duty tubular screw plug immersion heater built for industries that demand consistent, high-performance heating. Designed with a durable Incoloy® 800 sheath and packed magnesium oxide insulation, it delivers superior heat transfer, corrosion resistance, and long service life even under the most challenging thermal loads. This makes it an ideal solution for heating water, oils, solvents, gases, and other industrial fluids with maximum efficiency and minimal downtime.
At HiTechTrader, we make industrial heating systems like the Watlow BHNA25E3 more accessible and cost-effective. By offering pre-owned and refurbished immersion heaters, we ensure you get the same rugged durability and high-temperature performance at a fraction of the cost of new equipment. With its 2-inch screw plug design for easy installation, flexible voltage and wattage configurations, and compatibility across a wide range of tanks, vessels, and process systems, this heater is engineered to meet the heating demands of chemical processing, manufacturing, and industrial R&D.
Construction and Materials
- Sheath Material: Incoloy® 800 alloy for corrosion and oxidation resistance at elevated temperatures
- Sheath Diameter: 0.375 in (9.53 mm) – optimized for immersion applications
- Insulation: High-grade compacted MgO for efficient heat transfer and electrical insulation
- Resistance Wire: Centrally located for uniform heating and extended lifespan
- Base Design: 2 in NPT screw plug for fast, secure tank or vessel mounting
- Terminals: Flexible lead wires with silicone-impregnated fiberglass oversleeve; optional enclosures available
- Custom Options: Configurable bends, plug materials, sealing methods, and terminal styles
Electrical and Thermal Specifications
- Watt Density: ~23 W/in² (3.6 W/cm²) for balanced efficiency and longevity
- Voltage Options: Available in 120 V, 208 V, 240 V, and custom configurations
- Maximum Wattage: Adjustable within the BHNA25 series range
- Max Operating Temperature: Up to 870 °C (1600 °F) with Incoloy sheath
- Heating Mediums: Liquids (water, oils, solvents), gases, and forced air systems
Key Design Features
- Single-Ended Construction for simplified wiring and maintenance
- Replaceable Heater with screw plug design for reduced downtime
- Custom Bent Shapes for space-constrained or modular installations
- Terminal Options: Threaded stud, screw lug, or flexible leads
- Durability Enhancements: Sealing, corrosion-resistant upgrades, and hazardous-location compatibility
Applications
- Immersion Heating: Water, oils, solvents, and process fluids
- Industrial Equipment: Tanks, pipelines, vessels, ovens, dryers
- Air Heating: Forced air and recirculation systems
- Specialized Use: Deicing, chemical processing, moderate-to-high temperature heating
Safety and Compliance
- Standards: UL recognized for electrical safety
- Hazardous Locations: Explosion-resistant configurations available
- Protection: Thermal shock resistance, extended lifespan, corrosion-resistant build
Operational Advantages
- Consistent and reliable immersion heating
- High-temperature tolerance up to 870 °C
- Easy installation and replacement with screw plug design
- Low maintenance and long service life
- Flexible configurations tailored to unique process needs
Manufacturer Notes
- Brand: Watlow – global leader in industrial heating solutions
- Documentation: Datasheets, installation, and technical support available
- Customization: Wide selection of wattages, voltages, and geometries for specialized requirements
Why Buy from HiTechTrader?
When you purchase the Watlow BHNA25E3 from HiTechTrader, you're investing in proven heating performance without the high upfront costs of new equipment. Our pre-owned and refurbished heaters are carefully inspected to ensure reliability, efficiency, and long service life. With HiTechTrader, you gain access to trusted sourcing, expert support, and industrial-grade solutions tailored to your exact heating needs, making your process both cost-effective and dependable.
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