With 20 years experience, Hongtai Alloy is your trusted source for quality 230v 3kw flanged immersion heater with thermostat pocket 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 unit is an industrial-grade flanged immersion heater rated at 230V AC, 3kW single-phase, engineered for liquid heating in storage tanks, boilers, and process vessels. The element configuration incorporates a central thermowell (thermostat pocket) welded between the U-bent tubular element loops. This design accommodates a temperature sensor (such as a PT100 resistance thermometer or thermocouple) isolated from direct contact with the process fluid, allowing temperature monitoring and probe replacement without requiring tank drainage.
Technical Specifications
- Electrical Rating: 230V AC, 3kW (Single-Phase)
- Wattage Tolerance: +5% / -10% (Per industrial standards)
- Mounting Interface: Circular plate flange with pre-drilled mounting holes
- Thermowell Geometry: Center-mounted straight tube, liquid-isolated blind pocket
- Electrical Terminals: M4/M5 threaded stud terminals with hex nuts
- Sheath Options: Stainless Steel 304 (Standard for clean water); Stainless Steel 316L or Incoloy 800 (For corrosive or high-temperature applications)
- Cold Insulation Resistance: ≥100MΩ at 500V DC
- Max Sheath Operating Temp: 600°C
Industrial Case Studies
Case 1: Thermal Oil Circulation in Auxiliary Injection Molding Machinery (Mold Temperature Controller)
- Customer Pain Points: External temperature probes on conventional heating elements suffer from thermal lag. This often leads to localized sheath overheating, causing thermal oil carbonization, oil degradation, and severe mold temperature fluctuations.
- Hongtai Solution: Deployed the Hongtai 230V 3kW flanged heater, inserting a PT100 probe directly into the central thermowell.
- Field Results: Achieved zero-lag sensing of core oil temperatures, improving temperature control accuracy to within ±1°C. This effectively eliminated oil carbonization and doubled the service life of the heat transfer oil.
Case 2: Constant Temperature CIP Cleaning Water Tank in a Food Processing Plant
- Customer Pain Points: Replacing temperature sensors on previous heaters required draining a 1,000 L hot water tank, wasting valuable water resources and causing 3 to 4 hours of production downtime.
- Hongtai Solution: Selected the Hongtai flanged heater featuring an integrated central thermowell structure with a circular flange gasket seal.
- Field Results: The thermowell completely isolated the sensor from the process fluid. Technicians can now calibrate or swap temperature probes in under 5 minutes without draining the tank, reducing equipment downtime by 95%.
Application Notes
- Thermal Oil Circulation (Mold Temp Controllers): Locating the sensing probe inside the central thermowell measures core fluid temperatures directly. This mitigates localized sheath overheating, reduces fluid thermal degradation, and stabilizes temperature regulation in closed-loop systems.
- CIP Tanks & Process Vessels: The sealed thermowell design insulates the sensing probe from process liquids. Servicing or calibrating the temperature sensor can be performed while the tank remains full, minimizing equipment downtime during routine maintenance.
Manufacturer & Quality Assurance (Hongtai Heater Factory)
- Manufacturing Experience: Two decades of specialized production in industrial electric heating equipment.
- Quality Management: Manufactured under ISO 9001 certified quality control procedures, including 100% dielectric withstand and cold insulation resistance testing prior to dispatch.
- Facility Capacity: 10,000 m² manufacturing plant providing standard lead times and OEM/ODM custom engineering to client drawing specifications.
Installation & Operational Constraints
- Mechanical Mounting: Align flange to mating nozzle with an appropriate gasket and tighten bolts in a cross-pattern to recommended torque specifications.
- Wiring: Terminate power leads using ring-crimp connectors secured with hex nuts. Ensure terminal covers are fitted in wet or dust-heavy environments.
- Immersion Requirement: The active heated section must remain completely submerged during operation.
- Dry-Firing Warning: Do not energize the heater in air. Dry operation will result in immediate sheath failure and potential safety risks.
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