Cavitation Demonstration
(FM - 017)

1 Water inlet. 2 Pressure reducing valve. 3 Gate valve (1) 4 Rotameter. 5 Temperature gauge. 6 Venturi nozzle. 7 Gate valve (2) 8 Water Outlet. 9 Pressure gauges.

  • Studying the function of a Venturi nozzle.
  • Studying pressure as a function of the flow rate.
  • Studying cavitation processes at different flow rates and pressures.
  • Pressure reducing valve: 0.5-6 bar , up to 70 C
  • Venturi: inner diameter 18mm
    • Contraction 10.5 degree
    • Enlargement 4 degree
    • Narrowest cross section diam 3.5mm
  • Measuring ranges: Pressure .-1..-.3.. bar
    • Temp. .0..-..60. degree C
    • Flow rate ..0..-...1000. L/h
  • Cavitation Demonstration - (FM - 017)
  • Hard copy user manual

The educational unit is designed to demonstrate cavitation processes and formation of vapor bubbles in a Venturi nozzle

  • The educational unit is a vertical panel to be fixed at the top of the main hydraulic unit.
  • The educational unit is supplied with a thermometer, a rotameter, a ball valves for flow adjustment, a pressure reducing valve, a Venturi nozzle and manometer.
  • Through the educational unit, the pressure energy of water is converted into kinetic energy and vice versa in the Venturi nozzle. Therefore, vapor bubbles form in the narrowest cross section.
  • The Venturi nozzle is made of transparent plastic to allow visualizing of the flow processes.
  • There are three pressure measuring points on the Venturi nozzle: at the inlet, at the narrowest point and at the outlet.
  • The flow rate and the pressures can be controlled by two ball valves which are located at the inlet and outlet of the pipe system.
  • The flow can be read off a rotameter.
  • The pressure distribution within the Venturi nozzle is displayed on three manometers.
  • The temperature is measured directly upstream of the Venturi nozzle and is shown on the thermometer.
  • The input pressure can be controlled using a pressure reducing valve.