BPS explosion ventilator BPS series explosion ventilator applied in the condition of explosion-proof gas compound with factory ΙΙ type,Grade A,B and the temperature T1-T4. It widely used for ventilation and sunstroke in office,oil,military industry,chemical industry,medicine,metallurgy,etc. We also get explosion-proof certificate.The impeller made of aluminium alloy. has strong points such as operate steadily,beauty appearance,rational structure,etc. technical parameters Model no.DiametervoltagefrequencyspeedwattscapacitystaticBPSmmvHz r/minwm³/minpaBPS-30300(12'')11050/602800/330035/40120/15045/60BPS-30300(12'')220/24050/602800/330035/40120/15045/60BPS-40400(16'')11050/601400/1720180/22058/6890/130BPS-40400(16'')220/24050/601400/1720180/22058/6890/130BPS-50500(20'')11050/601400/1720370/450100/120 100/140BPS-50500(20'')220/24050/601400/1720370/450100/120100/140