An orifice is an opening made in the side or bottom of tank, having a closed perimeter, through which the fluid may be discharged. A mouthpiece is short tube fitted to a same size circular opening provided in a tank so that fluid may be discharged through it. Orifice and mouthpiece are used to measure the rate of flow of liquid. The apparatus is designed to measure the co-efficient of discharge of orifice & mouthpiece.
The apparatus consists of a supply tank at the side of which a universal fixture for mounting orifice or mouthpiece is attached. A centrifugal pump supplies the water to supply tank. Head over the orifice/mouthpiece is controlled by a by pass valve
provided at pump discharge. A measuring tank is provided to measure the discharge. A gauge for measuring X and Y co-ordinates of jet from the orifice is provided, which is used to calculate CV of orifice.Salient Features
- Supply Tank : 0.4 X 0.3 X O.5 m height
- Orifice : 8mm and 10mm.
- LID = 4
- LID = 1
- Bordas mouthpiece.
- Convergent mouthpiece.
- X·Y gauge for orifice jet co-ord1nates.
- Measuring tank of suitable capacity OR a calibrated water flow meter.
- Sump tank of suitable capacity.
- 0.5 HP pump with valve.