1. Each miniature boiler must be provided with a blowoff connection not less than one-half inch [12.7 millimeter] iron pipe size, directly connected with the lowest water space.

2. Blowoff piping may not be galvanized and must be provided with a valve or cock.

History: Effective July 1, 2020.

General Authority: NDCC 23.1-16-07

Law Implemented: NDCC 23.1-16-07