Relief valve on the gas main line of the organic heat carrier boiler
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TSG G0001 Boiler Safety Technical Supervision Regulations 7.2 Requirements for Combustion Equipment and Systems: The gas supply main line should be equipped with a relief valve group with interlocking function. See the picture below for content: The gas pressure used in the burner of my unit's organic heat carrier boiler is 0.2MPa, and a safety valve is installed on the pipeline. The inspector changed it to a relief valve according to the requirements of the boiler regulations. After consulting the relief valve manufacturer, there is no relief valve with such a high pressure. If it exceeds 0.1MPa, it is a safety valve! May I ask what the gas pressure of the boiler burners you use is? Are there any cases like ours? How to rectify it? Thanks!
After the pressure entering the burner of our furnace is adjusted to 40kpa, relief valves are installed.
The picture above is the interpretation clause of the pot regulations. There is an overpressure interlock control valve on the main gas pipeline of my unit, which complies with the terms (2) in the above figure. There is no need to set up a relief valve.
According to various sources, currently, there is no relatively mature relief valve in China with a pressure exceeding 0.1MPa. In addition, CJ335 also has requirements for relief valves.