Each miniature boiler must be equipped with a steam gauge having a dial range not less than one and one-half times the safety valve setting. The gauge must be connected to the steam space or to the steam connection to the gauge glass by a brass or bronze composition siphon tube, or equivalent device that will keep the gauge tube filled with water.

History: Effective July 1, 2020.

General Authority: NDCC 23.1-16-07

Law Implemented: NDCC 23.1-16-07