Correct Answer - Option 4 : Safety valve
Explanation:
Boiler Mountings:
- These are the equipments which are necessary for safety of the boiler.
- It includes the fittings which are primarily indicated for the safety of the boiler and for complete control the process of steam generation.
- The mounting forms an integral part of the boiler and are mounted on the body of the boiler itself.
The following mountings are usually installed on the boiler.
- Safety valve
- Water level indicators
- Pressure gauge
- Fusible plug
- Steam stop valve
- Feed check valve
- Blow-of cock
- Man and mudhole
Boiler Accessories:
Accessories include the components which are installed to increase the efficiency of the steam power plants and help in the powerful working of the boiler unit. These fitting are called boiler accessories.
Some important boiler accessories are:
- Air pre-heater
- Economizer
- Super heater
- Injector
- Pump
Hence safety valve is essential for boiler operation.