Function of
blow-down cock of a boiler is
To maintain
water level by draining excess water
To empty the water drum of the boiler
To remove
sludge and sediments collected in drum
To blow off
steam to maintain safe pressure
To remove
sludge and sediments collected in drum
Blow-down
cock or blow off cock is located at the bottom of the boiler. Its main function
is to empty the boiler whenever required and to remove the mud, scale or
sediments accumulated at the bottom of the boiler.
Hence, the
correct option is (C).
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