The breathing valve acts as a steam-blocking effect in the steam heating system, and the selection of a suitable breathing valve allows the steam heating device to achieve maximum working efficiency. In order to achieve the best results, a comprehensive understanding of the performance and characteristics of various types of breathing valves is required.
There are many varieties of breathing valves, each with different properties. When using a breathing valve, first select the special performance to meet the optimal operation of the steam heating equipment, and then consider other objective conditions, so that the choice of the breathing valve you need is correct and effective. The breathing valve should be able to "recognize" the steam and condensate in order to function as a steam barrier. "Identifying" steam and condensate is based on three principles: density difference, temperature difference, and phase change.
The selection of the breathing valve is determined by the operating pressure to determine the nominal pressure of the safety valve. The operating temperature determines the operating temperature range of the safety valve. The calculated constant pressure value of the safety valve determines the constant pressure range of the spring or lever, and then depends on the medium used. The material and structure of the safety valve, and then calculate the throat diameter of the safety valve according to the relief valve discharge amount.
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