GAST MFG CORP 0523-V4-SG588DX VACUUM PUMP Lubricated with 1/4 hp, 100-110/220-240; 100-115/220-230; 50-60-1 open motor with thermotector. 4.5 cfm (60 Hz), 3.6 cfm (50 Hz) open, 26 inches Hg maximum vacuum, 10 psi maximum pressure, 15 psi intermittent lab unit wired with low voltage cord.