(A) Each tank over 100-gallon capacity shall have vent openings, except safety valves, provided with approved non-corrodible flame arresters so attached as to completely cover the openings.
(B) Vent openings shall be in no case less than one-fourth inches in diameter, and where a power pump is used in filling tanks and a tight connection is made to fill pipe, vent shall not be smaller than fill pipe.
(1980 Code, § 27.017) Penalty, see § 98.999