@metengr - Thank you, this is helpful.
@timsh - Do you think that an alternative style gauge could replace ONE of the sight glass gauges for one of the two required above 400 psi?
I am seeking information about ASME Section 1 for Power boilers. I have been told that it says the code requires each fired boiler drum to have a gauge site glass and requires two (2) gauge site glasses for all boilers above 400 PSI.
My question is: does the code say / imply that the boilers...