(a) Where pressure-reducing valves are employed, a pressure gauge must be provided on the low-pressure side of the reducing station.

(b) Fuel oil service and transfer, fire, cargo, and boiler feed pumps must be provided with a discharge pressure gage. Additional information pertaining to fire pumps is in § 34.10-5 of subchapter D, § 76.10-5 of subchapter H, § 95.10-5 of subchapter I, and § 108.417 of subchapter IA, all of this chapter.