Free Air Delivery: 3.7 CFM (In a compressed-air system, free air delivery (FAD) is the enlarged volume of air that the compressor releases into the network within a given measure of time. To determine FAD, measurements must be made of the ambient pressure, humidity and temperature present at the air inlet of the machine.) Max Air Pressure: 5000 PSI Stages: 3 Stage Compressor - The three-stage compressor provides the most consistent power output and can operate for extended periods Lubrication: Splash lubrication Motor: 5.5 HP Gas Engine RPM: 1050 RPM (Lowest RPM HPA Compressor) Warranty: 2 Years Weight: 175 lbs Dimensions: 17 x 41 x 20 (WxLxH) inches Air Quality complies with EN 12021, Grade E and D. Ideal for use in operations requiring breathing air in accordance with EN 12021 standard and high pressure air, and are available with electric, petrol, and diesel engine drive options. Standard Features Antirust power coated frame P21 Purifier with Refillable Purifier Element 2nd and 3rd Stage Water Condensate & Oil Separator Intercoolers (Stainless Steel) Aftercooler (Stainless Steel) Priority Valve (Pressure Maintaining Valve) Check Valve Safety Valve at Each Stage Oil Level Sight Glass Fill Times 100 cu-in. bottle from 0 to 4500 psi in 6 minutes 74 cu-ft. tank from 0 to 3000 psi in 16 minutes 98 cu-ft. tank from 3000 to 4500 psi in 6 minutes 74 cu-ft. tank from 0 to 4500 psi in 23 minutes 98 cu-ft. scba tank from 0 to 4500 psi in 30 minutes.