The boiler relief valve arranges vapor deadener relief valve in being used for factories , mines and enterprises such as heat power plant , pyroelectricity company , steel works , chemical plant mainly , the effective noise elimination that the steam discharging a steam valve , releasing a valve's discharges conquers noise. Routine classification has the boiler tube relief valve to arrange vapor deadener , the hot shot implement relief valve arranges vapor deadener , the still hot implement relief valve arranges vapor deadener.