Louisiana Administrative Code
Title 55 - PUBLIC SAFETY
Part V - Fire Protection
Chapter 50 - Boiler Construction, Maintenance, Inspection and General Use
Subchapter C - Existing Installations- Power Boilers
Section V-5044 - Pressure or Altitude Gages and Thermometers

A. Each hot water boiler shall have a pressure or altitude gage connected to it or to its flow connection in such a manner that it cannot be shut off from the boiler except by a cock with tee or lever handle, placed on the pipe near the gage. The handle of the cock shall be parallel to the pipe in which it is located when the cock is open.

B. The scale on the dial of the pressure of altitude gage shall be graduated approximately to not less than 1-1/2 nor more than 3 times the pressure at which the safety relief valve is set.

C. Piping or tubing for pressure or altitude-gage connections shall be of nonferrous metal when smaller than 1 inch pipe size.

D. Each hot water boiler shall have a thermometer so located and connected that it shall be easily readable when observing the water pressure or altitude. The thermometer shall be so located that it shall at all times indicate the temperature in degrees Fahrenheit of the water in the boiler at or near the outlet.