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This apparatus is used to determine the coefficient of discharge (Cd), Coefficient of velocity (Cv), and Coefficient of contraction (Cc) of different types of orifice.

The system is closed circuit:-

Orifice of dia 10 mm.
Mouth piece of dia 10 mm long.

• A Centrifugal Monoblock Pump 1/2 HP Motor (ISI Kirlosker Make)
• S.S. Sump Tank 50 Ltr. to collect the water.
• S.S. Measuring Tank 30 Ltr fitted with piezometer tube to measure the discharge. Damper is used to collect the water in S.S. MEASURING TANK for certain time.
• Pipe & ISI mark Control Valve and regulating valves are used to circulate water.
• Bye-pass line is also used to regulate the discharge.

This apparatus consists of an inlet tank 30 x 30 x 50 cm fitted with the piezometer tube to measure the head of water in tank. Orifice or mouthpiece is fitted on the tank with nuts. A hook gauge and scale is used to measure the horizontal and vertical distances along the jet of water. Powder coated paint — the tanks are well hence increase the life of tank.