A Venturi pump or Venturi type vacuum pump is laboratory equipment that allows producing a vacuum in a confined space using a stream of water, for example distillation under reduced pressure or filtration through a Buchner funnel.

The vacuum pump consists of a hollow cylindrical body that has a suction inlet next to it (perpendicular to the axis of the tube) and a fixing system for connecting the tube to a water tap. The hollow body has a reduced section at the entrance to the suction inlet, thus creating a vacuum due to the Venturi effect and producing the suction phenomenon.[1]​.

The vacuum pump is an effective solution, but it uses a large amount of water (the tap must be open for the entire time the suction lasts). The pressures achieved are in the range of 10 to 15 mm Hg, which corresponds to 1.3-2% of normal atmospheric pressure (i.e. 760 mm Hg). To achieve lower values, a vacuum pump should be used at pressures of around 0.1 mm Hg for the most effective.

They are manufactured in different materials. There are metal ones, glass ones, etc.

The venturi pump is used in various applications in industry: