With 20 years experience, Hongtai Alloy is your trusted source for quality 380v 25kw industrial flanged immersion heating element as one of the leading suppliers of various heaters in China. Providing you with the most competitive price, we welcome you to buy the heater from our factory.
Product Description
This high-power industrial flanged immersion heater, customized by Hongtai Heater Factory, has a rated specification of 380V AC, 25 kW three-phase. It is specifically designed for rapid, large-scale liquid heating in heavy-duty storage tanks, industrial boilers, oil storage tanks, and chemical process vessels. This heavy-duty design features multiple U-shaped bent heating elements, which are fixed to a standard industrial mounting flange via copper welding or welding. It is specifically designed to deliver stable, high-energy-efficiency performance in demanding continuous industrial environments.
Technical Specifications
| Operating voltage | 380V AC (three-phase, star/delta connection) |
| Power rating | 25 kilowatts |
| Wattage Tolerance | +5% / -10% (in accordance with IEC/Industrial Manufacturing Standards) |
| Installation Interface | Heavy-duty ANSI/DIN/JIS standard round flange with pre-drilled mounting holes. |
| Junction Box | Optional IP55/IP65 waterproof and dustproof junction box or explosion-proof enclosure (Ex d IIC T4). |
| Electrical terminals | Heavy-duty M6/M8 threaded stud terminals, equipped with stainless steel hex nuts. |
| Housing options |
Stainless steel 304 (for water heating); Stainless steel 316L Incoloy 800 (suitable for corrosive solutions, high-pressure boilers, or oil heating) |
| Cold-state insulation resistance | ≥100 MΩ at 500V DC voltage. |
| Dielectric strength test | 1800V AC / 1 second (cold state) |
| Maximum sheath operating temperature | up to 600°C (SS316L) / 760°C (Incoloy 800) |
Application And Engineering Explanation
This flanged immersion heater is built for three core industrial heating scenarios:
- High-flow water and steam boilers: Delivers fast heat recovery for commercial boiler systems and hot water storage tanks, cutting warm-up time for high-volume operations.
- Industrial heat transfer oil systems: Keeps heavy fuel oil, lubricating oil and heat transfer media at their target working viscosity, preventing clogging in cold-start conditions.
- Chemical and process storage tanks: Maintains consistent reaction temperatures and prevents fluid crystallization in chemical processing lines.
Industrial Case Studies
Case 1: Heavy Fuel Oil Pre-Heating for Petrochemical Storage
- The client needed to keep 30,000 liters of high-viscosity fuel oil at a steady 80°C in an outdoor storage tank, even in cold winter ambient conditions. We installed two of our 380V 25kW Incoloy 800 flanged heaters in a three-phase delta configuration, paired with IP65 weatherproof junction boxes to withstand outdoor exposure. After 18 months of continuous 24/7 operation, the system maintained stable oil viscosity for uninterrupted pumping, with zero sheath carbonization or insulation breakdown incidents.
Case 2: Fast-Cycle Steam Generation for Industrial Boilers
- The client's high-pressure closed-loop boiler system required rapid heat recovery to handle fluctuating steam demand across multi-shift production. We deployed our heavy-duty 25kW SS316L element array with reinforced flange welding, rated to withstand 12 bar working pressure. The setup delivered consistent thermal output that matched the boiler's fast-cycle demand, passing all cold insulation resistance checks (≥100MΩ) across every production shift.
Hongtai Heater Factory Manufacturer
- 20 Years Manufacturing Experience: Hongtai has been dedicated to the manufacturing of industrial heating elements for two decades, ensuring precise thermal calculations for flange immersion heaters.
- Certified Quality Systems: Hongtai strictly adheres to the ISO quality management process in production, conducting 100% full-power resistance and insulation testing before shipment to ensure the safety of the flange immersion heater.
- Production Facility: Hongtai possesses a 10,000 m² manufacturing plant equipped with specialized engineering support for CAD design verification, customized flange dimensions, and strict OEM/ODM confidentiality agreements to ensure flange immersion heater quality.
Installation & Operational Constraints
- Mechanical mounting: Align the flange face with the tank nozzle gasket, and tighten bolts in a cross-pattern to the specified torque value to ensure an even seal.
- Wiring: Use proper ring-crimp connectors and high-temperature lead wires for balanced three-phase wiring (delta or star configuration). The grounding wire must be securely connected to the designated ground lug.
- Immersion requirement: The entire active heated section must remain fully submerged in the fluid during operation – partial immersion will cause localized overheating.
- Dry-fire warning: Never power on the heater when it is not submerged in fluid. Dry operation will cause immediate sheath failure, element meltdown, and serious fire hazards.
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