Single stage and double stage
Voltage (V/Hz):220/50 or 110/60
Free Air Displacement: 1CFM,1.2CFM,2CFM,2.3CFM,3CFM,3.6CFM,4CFM,4.7CFM,7.1CFM,8CFM,9.5CFM
Ultimate Vacuum (Pa):5×10-1,6.7×10-2,10
Motor (hp):1/8,1/6,1/4,1/3,1/2,3/4,
Rotating speed(r/min):1440,1720,2800,3600
Intake Fitting:1/4SAE 1/2Acme 5/8SAE
Oil capacity(ml):160,220,250,480[...]