Demo model that has been run once for less then 1 hours to top up a 6.8l cylinder 

• 【Specification】: Voltage: 220v, frequency: 60Hz, power: 2.2kw, flow: 40L / min, working pressure: 30MPA / 300bar / 4500psi,Suitable for filling bottles with large capacity, it takes about 4 minutes to fill 0.5 liters from 0-300 bar and it takes about 51 minutes to fill 6.8 liters from 0-300 bar or a top up from 200 bar to 300 bar in 19 minutes 
• 【Two Stage Filtration Filter】 : Built-in two stage filtration filter system, make the air cleaner, additional blue oil water filter . With silver aluminum built-in drain system .
• 【Specially Point】:This model of pcp air compressor come with adjustable pressure function , it can easily reach 4500psi and automatically stop filling when the pressure reaches you set .
• 【Cooling system】: A battery-powered digital thermometer monitors an independent water cooling system. You need to prepare cooling water in an external bucket. Do not start the machine without preparing cooling water. Before using the compressor, replace the oil breather and top up with oil.
• 【Wide Application】:Perfect for fire fighting, paintball, leakage detecting, pressure-tight test, automobiles, air impermeability test, pressure proof test, etc.