The double U-shaped heating element for water heaters is designed to provide fast, efficient, and uniform heating performance in domestic and industrial hot water systems. Featuring a compact dual U-shaped structure, this element increases the heating surface area within a limited space, ensuring rapid water temperature rise and improved energy efficiency.
Inside the tube, electric current flows through a high-resistance Ni-Cr heating wire. The generated heat is transferred through high-purity magnesium oxide insulation powder to the outer metal sheath, which then efficiently delivers heat to the surrounding water. The dual U-shaped configuration allows stable heating performance and balanced temperature distribution, minimizing energy loss and extending the heater’s service life.
Manufactured with high-quality stainless steel, copper, or nickel–iron–chromium alloy materials, offering the element with excellent corrosion resistance, pressure tolerance, and long-term durability in continuous operation. It is widely used in storage water heaters, electric boilers, and industrial water heating systems.
| Item | Specification |
| Material | Stainless Steel / Copper / Incoloy (Customizable) |
| Tube Diameter | Φ6–16mm |
| Length | 100–2000mm (Customizable) |
| Structure Type | Double U-shaped |
| Heating Wire | Ni-Cr resistance wire |
| Insulation | High-purity magnesium oxide powder |
| Operating Temperature | Up to 800°C |
| Input Voltage & Power | Customizable according to water heater requirements |
| Installation Method | Threaded, Flanged, or Direct Insertion |
| Surface Treatment | Polished or oxidized finish (optional) |
| Service Life | ≥10,000 hours under rated conditions |
● High Heating Efficiency: Double U-shaped design enlarges heating area, enabling fast and uniform heat transfer.
● Compact Design: Provides strong heating performance within limited installation space.
● Durable Construction: Stainless steel, copper, or Incoloy sheath ensures corrosion and pressure resistance in water environments.
● Energy Saving: Optimized structure reduces heat loss and improves overall efficiency.
● Long Service Life: Reliable operation for ≥10,000 hours under rated use conditions.
● Customizable Options: Voltage, power, length, and mounting method can be tailored to different heater models.
● Stable and Safe: Excellent insulation, sealing, and over-temperature protection performance.
● Electric storage water heaters
● Instant and tank-type water heaters
● Industrial and commercial hot water systems
● Electric boilers and heat exchangers
● Domestic water heating equipment
● Customized water heating systems for laboratory or process use
