Free Discharge Apparatus
(FM - 012)

1 Manometer. 2 Static head of the tank. 3 Pitot tube. 4 Water inlet. 5 Over flow drain. 6 Water outlet. 7 Jet flow pipe.

  • Study of the outlet jet (diameter, velocity)
  • Determination of pressure losses for different outlet contours
  • Determination of flow rate at different discharge heads.
  • Determination of the discharge coefficient for different outlet contours.
  • Determination of the velocity coefficient for different outlet contours.
  • Determination of the contraction coefficient for different outlet contours
  • Maximum Head: 590mm
  • inner diameter : 110 mm
  • Tank Capacity: 6 L
  • Jet Radius: 0-10 mm
  • Five Inserts
  • Free Discharge Apparatus (FM - 012)
  • Hard copy user manual

The free discharge apparatus (FM – 012) is a bench top kit, which designed to illustrate orifices with different inlet and outlet diameters. The unit also identify the determination of the diameter and velocity of the outlet jet.

  • The educational unit demonstrates the pressure losses in the vertical flows from tanks, the unit also determines the contraction coefficient for different inlet and outlet contours and diameters.
  • The experimental unit includes a transparent tank with an adjustable overflow, a measuring device as well as a Pitot tube and twin tube manometers.
  • The transparent tank provides an excellent observation of the experiments, it has an orifice fitted in the base.
  • The educational unit also includes an interchangeable insert that is installed in the tank’s water outlet to facilitate the investigation of various openings.
  • The unit is supplied with five inserts with different diameters, inlet contours and outlet contours to perform different experiments.
  • The issued water jet diameter is measured using the measuring device and the Pitot tube detects the total pressure of the flow.
  • The pressure difference that is read on the manometer, is used to determine the jet velocity.
  • The tank is fitted with an adjustable overflow and a measuring point for static pressure. In this way, the level can be precisely adjusted and read on the manometer.
  • The experimental unit is positioned easily and securely on the work surface of the main hydraulic unit base module.
  • The water is supplied and the flow rate measured by main hydraulic unit.