bdfs, bbfs1 - flameproof exhaust fans
brief introduction：
● bdfs, bbfs1-□ explosion-proof exhaust fans are certified by the national cqst explosion protection and can be used in the hazardous area zone 1 and zone 2 locations classified by gb3836.14.
● suitable for the electrical control of explosive gas mixtures in the oil, chemical, military, power, marine and other industries under the normal working environment with the classification according to gb3836.1: iia, iib, iic, temperature groups t1 ~ t4 room, operation room, driller room, analysis cabin, production workshop, dangerous goods warehouse and other places for ventilation.