With 20 years experience, Hongtai Alloy is your trusted source for quality 230v 6kw s-shaped screw plug immersion heater for water boiler 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.
1. Product Overview & Functional Description
This commercial-grade S-shaped screw plug immersion heating element is rated at 230V AC, 6kW, engineered specifically for high-efficiency liquid heating in water boilers, commercial steamers, process vessels, and hot water tanks. The element incorporates a specialized S-bend (corrugated) tubular configuration, maximizing effective surface area within compact mounting spaces. The unit features a threaded brass or stainless steel screw plug paired with a protective waterproof terminal cap, ensuring reliable mechanical sealing and ingress protection.
2. Technical Specifications
| Specification Item | Parameter / Description |
| Model / Part Number |
HT-SPH-230V-6KW-S |
| Operating Voltage |
230V AC (Single-Phase) |
| Power Rating |
6kW (6000W) |
| Wattage Tolerance | +5% / -10% (Per industrial standards) |
| Element Geometry |
S-shaped corrugated profile for expanded thermal surface area |
| Mounting Interface |
Standard G1.5" or G2" screw plug (Brass or Stainless Steel) |
| Sheath Material |
Food-grade Stainless Steel 304 (SS316L option for corrosive fluids) |
| Terminal Enclosure |
Heavy-duty black engineering plastic waterproof cap |
| Insulation Resistance | Cold insulation resistance ≥100MΩ at 500V DC |
| Dielectric Withstand | 1800V AC / 1 sec (Cold state) |
3. Application & Engineering Constraints
- S-Bend Thermal Advantages: Compared to straight or basic U-bent elements, the S-shaped geometry increases the active heating element length relative to the overall vessel depth. This design lowers surface watt density, mitigating limescale accumulation and preventing premature element burnout.
- Installation & Sealing: Install with a compatible high-temperature gasket (such as silicone or PTFE). Always apply tightening force directly to the hex face of the screw plug using a wrench. Never apply rotational torque to the S-shaped heating tubes, as this can breach the brazed/welded seal between the tube and plug.
- Dry-Firing Hazard: Ensure the active heated section is 100% submerged in liquid before applying power. Operating in air will cause immediate element burnout and permanent equipment damage.
- Maintenance & Descaling: In hard-water areas, perform periodic descaling on the sheath surface to maintain heat transfer efficiency and prevent localized overheating.
4.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.
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