HengTai Self-Priming Long Tube Breathing Apparatus CategoryExplainSpecifications1-2 person3-4 person5-6 personWind amount12m³/h18m³/h26.5m³/hWind pressure 7.5Kpa9Kpa10.78KpaVacuum degree-5Kpa-6.5Kpa-9KpaUsing wind pressure<6Kpa<7Kpa<7KpaPower Supply220V AC/50HZ220V AC/50HZ220V AC/50HZPower120W180W250WSpeed2820r/min2820r/min2820r/minCapacitance4uF 500V AC4uF 500V AC6uF 500V ACCurrent0.9A1.1A1.6AProtection gradeIP54IP54IP54Insulation gradeBBBAir supply modePositive pressure constant current supplyPositive pressure constant current supplyPositive pressure constant current supplyGas supply30L/min~350L/min30L/min~350L/min30L/min~350L/minExternal dimensions300*250*240mm300*250*240mm300*250*240mmExternal materialStainless steelStainless steelStainless steel