Boiler mountings are used to run a boiler in a safe way ex: safety valve, Water level indicators etc. Boiler mountings are primarily intended for the safety of the boiler and for complete control of the steam generation process. Boiler accessories are used to improve the efficiency of a boiler ex: economizer, air preheater etc. Boiler accessories are installed to increase the efficiency of the boiler plants to help in proper working of the boiler unit.