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Which of the following boiler mountings protect the boiler against damage due to overheating due to low water level?


1. Stop valve
2. Feed check valve
3. Blow off cock
4. Fusible plug

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Correct Answer - Option 4 : Fusible plug

Explanation:

  • A fusible plug is fitted to the firebox.
  • It's an object is to put off the fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit and avoids the explosion which may take place due to overheating of the furnace.

  • The boiler s are part of the boiler and are required for proper functioning. It is essential fitting for the safe working of a boiler.
  • Some of the important mountings are: Water level Indicator, Pressure Gauge, Safety Valve, Fusible Plug, Feed Check Valve, and Steam Stop Valve
  • The accessories are mounted on the boiler to increase its efficiency. These units are optional on an efficient boiler.
  • The following accessories are normally used on a modern boiler: Economizer, Superheater, Air pre-heater, Feedwater pump, Steam injector, Chimney

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