NDAC 33.1-14-07-07
Blowoff piping
Cite as N.D. Admin. Code § 33.1-14-07-07
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.