Model - EM-140, EM-160 ,EM-180 ,APE-140, APE-170 ,APE-250 ,APE-335 Normal Working Pressure (Kg/cm2) - 7.0 , 7.0, 7.0 ,7.0, 7.0, 7.0 ,7.0 Max Working Pressure (Kg/cm2) - 8.75 ,8.75 ,8.75 ,10.0 ,10.0 ,10.0 ,10.0 Free Air Delivery - 110 ,130 ,150 ,140 ,175 ,250 ,335 No Of Cylinder - 2,2,2,2,2, 4,4 Motor Hp - 20,30,40, 30 ,40 ,60 ,75