MIL-B-7619A, MILITARY SPECIFICATION: Blower, Exhaust, Electric Motor Driven Explosion Proof (27-DEC-1982) [No S/S Document]

MIL-B-7619A, MILITARY SPECIFICATION: Blower, Exhaust, Electric Motor Driven Explosion Proof (27-DEC-1982) [No S/S Document]., This specification covers one type of electric motor-driven explosion-proof blower, designated Type MA-1, having a minimum delivery of 1500 cfm of free iar with 30 feet of 8 inch diameter flexible fabric ducting attached