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boiler safety valve

Boiler systems have safety valves to protect them from over pressure operation due to any reason. these safety valves are provided in drum, superheater and reheater inlet and outlet pipe. the safety valve on drum and superheater together will be able to relieve more than 100% generating capacity of boiler.
The main function of a safety valve is to relieve pressure. it is located on the boiler steam drum, and will automatically open when the pressure of the inlet side of the valve increases past the preset pressure. all boilers are required by asme code to have at least one safety valve, dependent upon the maximum flow capacity (mfc) of the boiler.

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