or
Pump, Dry Vacuum; Welch; Standard-duty; Oil-free Wob-L Piston; With liquid trap; Mounted vacuum gauge and regulator; Free Air Displacement 3.5L/min; Ultimate pressure 5 torr; Max. Vac. 29.8 in. Hg; 1/3hp; 115V 60Hz 1Ph; 3/8 in. I.D. tubing needed