Q.

What is the function of pressure gauge in the boiler?

A. to indicate steam pressure
B. to indicate water pressure
C. to indicate air pressure
D. to indicate flue gas pressure
Answer» A. to indicate steam pressure
Explanation: the function of the pressure gauge is to indicate the steam pressure inside the boiler drum in bar or in kgf in cm2 or in kn/m2 in gauge pressure. if the boiler is fitted with a superheater, one more pressure gauge fitted to the superheater header indicates the superheated steam pressure at any given instant.
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