Flow Through an Orifice
Product Code : LSK-FM-10471
Flow Through an Orifice (SKU LSK-FM-10471) is a bench-top apparatus for measuring how flow, energy and jet area reduce as water discharges from a small orifice under a steady head. It is a core experiment in engineering fluid mechanics courses and runs on the Digital Hydraulic Bench. Science Lab Supplies manufactures the unit in its Saha, Ambala, India works at Plot 448, HSIIDC Industrial Area, and delivers it straight to engineering colleges, polytechnics, contractors and distributors.
Specifications
The apparatus is a transparent cylindrical tank with a sharp-edged orifice already mounted in its base. Water enters through an adjustable diffuser, an overflow pipe fixes the level, and manometers read the total head on the orifice and under the jet, while a traversing Pitot tube and a sharp blade measure the jet itself.
| Parameter | Value |
|---|---|
| SKU | LSK-FM-10471 |
| Tank | Transparent cylinder with base mounting for orifices |
| Orifice as supplied | Sharp-edged, mounted |
| Inlet and level | Adjustable diffuser; overflow pipe |
| Instrumentation | Manometers, traversing Pitot tube, sharp-blade jet gauge |
| Water supply | Digital Hydraulic Bench (separate item) |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Flow Through an Orifice Apparatus
By comparing measured discharge with the ideal value, and jet velocity and diameter with the orifice size, students find the coefficients of discharge, velocity and contraction at several heads. It fits the orifice and mouthpiece practicals of B.Tech/B.E. civil and mechanical engineering and diploma fluid mechanics labs.
- Coefficient of discharge of a sharp-edged orifice at different heads.
- Coefficient of velocity from Pitot measurements in the jet.
- Coefficient of contraction from the jet diameter at the vena contracta.
- Comparing orifice shapes fitted to the base mounting.
Standard Scope of Supply
Each apparatus is supplied with the transparent tank, the sharp-edged orifice already fitted, the adjustable diffuser and overflow pipe, manometers, the traverse assembly with Pitot tube and the sharp-blade jet gauge. The hydraulic bench, whose measuring tank collects the jet for flow measurement, is quoted separately.
Packing, MOQ and Lead Time
Quotes are available from a single apparatus up to a quantity for every bench in the laboratory, with packing, delivery time and price stated for the number you specify. The hydraulic bench and other engineering lab equipment in India can be priced on the same quotation.
Using its Importer-Exporter Code, Science Lab Supplies can ship to buyers in Iraq, Nigeria, Kenya, Ghana, Ethiopia and Tanzania. Our sales team answers messages from the contact page and lists saved in the enquiry cart; institutional buyers can also visit the lab tender page.
Frequently Asked Questions
How is the head on the orifice varied?
The inflow and overflow pipe set the water level in the tank. Adjusting the flow to the diffuser raises or lowers the level, which changes the head acting on the orifice.
Can other orifice shapes be tested?
Yes. The tank base has a mounting for different orifices, so students can study other shapes. For the orifices you need beyond the sharp-edged one, send your list through the contact page.
How does it compare with Jet Trajectory and Orifice Flow?
Jet Trajectory and Orifice Flow uses four interchangeable nozzles and adds a horizontal mounting and plotting board for jet paths. This apparatus concentrates on orifice coefficients with a sharp-edged orifice.
Is Science Lab Supplies the manufacturer or a trader?
Manufacturer: the apparatus is made in the company's Ambala plant at Saha, India, and customers buy from that factory directly.
Related Orifice and Flow Measurement Equipment
Orifices, notches and Venturi meters are the three flow-measuring devices every hydraulics course compares. These four items cover the extended jet study, the bench that supplies the water, weir discharge and Venturi meter calibration.
- Jet Trajectory and Orifice Flow — four nozzles plus jet trajectory plotting.
- Digital Hydraulic Bench — water supply and digital flow display.
- Discharge Over a Notch — V-notch and rectangular weirs as flow regulators.
- Venturi Flowmeter — fits the Flow Meter Calibration unit to show Venturi meter accuracy.
Browse the full Fluid Mechanics range or all engineering laboratory equipment.
Last updated: 25 September 2026
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