Three-stage, chemically-resistant diaphragm type pump. Ultimate pressure 1.5 torr (2 mBar), 17L/ minute flow rate. Connections are for 8mm I.D. vacuum hose. 115V, 50/60Hz. Pump is compact and extremely quiet - great for all laboratory applications. Low maintenance thanks to beltless, oil-free operation. All wetted parts are PTFE or PTFE-type compounds.