... relevant regulations of the design and manufacture.Application1. Explosion-proof fan explosion-proof flag is Exd II BT4, May transport ... place.3. Explosion-proof fan can with frequency 50Hz, 380v or 60Hz, 440v, YB-H series flameproof Marine threeophase asynchronous ... . End straight zone detonation fan, end straight league bulkhead.Explosion-proof fan for horizontal, single stage, single suction and ...