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Blowdown valves
BSVZBV
Boiler blowdown is water intentionally wasted from a boiler to avoid concentration of impurities during continuing evaporation of steam. The water is blown out of the boiler with some force by steam pressure within the boiler. Bottom blowdown used with early boilers caused abrupt downward ... Two bottom blowdown valves are often used in series to minimize erosion.
Material of construction : Bonze, CS