46 C.F.R. § 58.16-16 Reducing regulators.
Title 46 - Shipping
(a) All systems shall be provided with a regulating device so adjusted as to release gas to the distribution tubing at a pressure not in excess of 18 inches water column, or approximately 10.5 ounces per square inch. (b) The low pressure side of all regulators shall be protected against excessive pressure by means of a suitable relief valve which shall be integral with the regulator. The relief valve shall be set to start to discharge at a pressure not less than two times and not more than three times the delivery pressure. (c) All reducing regulators shall be fitted with a pressure gage located on the high pressure side of the regulator.
Title 46: Shipping
PART 58—MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS
Subpart 58.16—Liquefied Petroleum Gases for Cooking and Heating
§ 58.16-16 Reducing regulators.
