Why does an electric heater need a pressure vessel certificate?

Special equipment refers to boilers, pressure vessels, pressure pipes, elevators, hoisting machinery, passenger ropeways, large amusement facilities and special motor vehicles in sites (factories) that involve life safety and are highly dangerous.

If the electric heating steam generator is below 30 liters, the pressure is below 0.7Mpa, and the temperature is below 170 degrees, there is no need to declare a pressure vessel. Only equipment that meets the following three conditions at the same time needs to be reported as a pressure vessel.

1. The working pressure is greater than or equal to 0.1MPa;
2. The product of the inner tank water volume and the equipment working pressure is greater than or equal to 2.5MPa·L;
3. The contained medium is gas, liquefied gas, or liquid whose maximum working temperature is higher than or equal to its standard boiling point.

Working pressure refers to the highest pressure (gauge pressure) that may be reached at the top of the pressure vessel under normal operating conditions; volume refers to the geometric volume of the pressure vessel, which is subject to the dimensions marked on the design drawing (without considering manufacturing tolerances), which generally should Deduct the volume of internal parts permanently connected to the interior of the pressure vessel.

When the medium in the container is liquid and its maximum working temperature is lower than its standard boiling point, if the product of the volume of the gas phase space and the working pressure is greater than or equal to 2.5MPa?L, a pressure vessel also needs to be reported.
To sum up, equipment that meets the above three points is a pressure vessel, and its use requires a pressure vessel declaration. However, the electric heating steam generator is below 30 liters, the pressure is below 0.7Mpa, and the temperature is below 170 degrees. It does not meet the conditions, so it is not reported. The need for pressure vessels.

When the rated evaporation capacity, rated steam pressure, rated steam temperature, volume and other parameters of the steam generator meet the above data, the batch of steam generators can be determined to be special equipment, and a pressure vessel certificate is required.
Nobeth company has specialized in the research of electric heating steam generators for more than 20 years. It has a Class B boiler manufacturing license and a Class D pressure vessel certificate, and is a benchmark in the steam generator industry. Nobis steam generators are widely used in eight major industries including food processing, clothing ironing, medical pharmaceuticals, biochemical industry, experimental research, packaging machinery, concrete maintenance, and high-temperature cleaning.