scba breathing apparatus 1.Air cylinder volume:5,6,6.8L 2.Have CCS/ECcertification ... -type air air breathing device. It is mainly applicable in firefighting , chemical industry, ships and vessel, petroleum, smelting and ... 6.8/30Working pressure of the gas cylinder (Mpa)303030Volume of the gas cylinder (L)566.8Max flow (L/min) ... ×290755×460×290755×460×290 fire fighting respirators,SCBA,marine equipment