Stainless Steel Electric Heater Product Structure - Yangzhou Darui
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The protective tube has a diameter of 108mm and a wall thickness of 5mm, made of seamless steel pipe. The heating core uses three electric heating tubes as one heating element. The wiring device cover is made of stainless steel for protection, effectively ensuring the safety of the wiring device.
Stainless Steel Electric Heater Product Features:
It has a large heating area and fast heat transfer, effectively preventing carbonization of the heated medium. Since the electric heater is connected to the tank body via a flange, the heater is isolated from the heating medium, making maintenance convenient. During repair, simply pull out the heating core and replace it with a new heater.
Technical Parameters:
Rated Voltage: Single Phase 220V Three Phase 380V
Surface Heating Power: Type 4 and Type 5 ≤1.8W/cm2 Type 6 and Type 7 ≤0.7W/cm2
Heat Transfer Temperature: ≤300°C
Working Medium: Mineral Oil
Working Pressure: ≤0.8Mpa
Heater Installation Hole: ≥φ114mm
Note: When selecting, consider the actual conditions of the heating medium and the installation dimensions of the equipment. The surface heating power should be as low as possible, preferably ≤0.7W per square centimeter. During wiring, use appropriate high-temperature wires to connect the power distribution control box to the electric heater.
Product Features:
1. Composed of a heating core and a protective tube. The HRY1 series sheathed electric heater, the sheathed electric heating tube, uses a tubular electric heating element as the heat source for the heating core. The protective tube is made of thin stainless steel, providing a large heat dissipation area and fast heat transfer. The wiring terminal part is divided into ordinary type (using an iron-drawn cup-shaped cover) and special type (using a bolted explosion-proof cover seal). The special type meets the requirements of explosion-proof mark dIICT4 and protection level IP65 series standards.
2. Connected to the oil tank container body via a flange. The protective tube isolates the heating core from the heated oil. When repairing the electric heater, there is no need to drain the oil from the tank; simply pull out the heating core and replace it with a new one, making maintenance convenient.
3. During design, consider the contact area between the protective tube and the heated oil to prevent local carbonization of the oil due to excessive heating temperature. This model of heater is only suitable for heating heat transfer oil or oil with good heat transfer effect, and for internal heating of media.
Product Applications:
Mainly used for heating hydraulic oil and lubricating oil in hydraulic lubrication devices.![]()
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.


