Bernoulli Tube Apparatus
Product Code : LSK-POM-11196
Bernoulli Tube Apparatus (SKU LSK-POM-11196) is a pair of 500 mm flow tubes, one with a central constriction and one of constant bore, each with three side tubes that act as manometers, used to show how fluid pressure falls where the flow speeds up. It serves Class 11, B.Sc. and diploma physics. Science Lab Supplies produces the set at its Plot 448 factory, HSIIDC Industrial Area, Saha, Ambala, India, quoting schools, colleges, tender contractors and distributors as the manufacturer.
Specifications
The Bernoulli tube set is specified line by line in the table. In short, two flow tubes of 500 x 13 mm each carry three 25 mm side tubes about 150 mm apart; one tube narrows at the centre, the other has a constant bore, and glass, swan-neck and rubber tubing complete the kit.
| Specification | Value |
|---|---|
| SKU | LSK-POM-11196 |
| Flow tubes | Two |
| Flow tube size | 500 x 13 mm (length x outer diameter) each |
| Side tubes | Three sealed-in short side tubes per flow tube |
| Side tube length | 25 mm each |
| Side tube spacing | About 150 mm |
| Side tube use | Connection to glass tubing used as manometers |
| Bernoulli tube | Central narrowed portion, with the middle side tube rising from it |
| Second tube | Constant-bore gradient tube |
| Glass tubing | 6 lengths |
| Outlet tubes | 2 swan-necked outlet tubes |
| Rubber connectors | 8 small pieces of rubber connecting tubing |
| Demonstrates | Change of pressure and flow speed of an incompressible fluid with tube cross-section |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Bernoulli Tube Apparatus
Water flows through each tube while the side-tube manometers show the pressure at three points. In the narrowed tube the middle column drops, because the water speeds up through the constriction, so students see the pressure and velocity trade-off of Bernoulli's theorem directly.
- Class 11 (Mechanical Properties of Fluids): verifying Bernoulli's principle, an item on the physics lab equipment list for Class 11 and 12.
- B.Sc. and diploma physics: comparing the pressure drop along the constant-bore gradient tube with the narrowed tube.
- Introducing flow meters before students move on to the engineering Venturi Flowmeter.
- Comparing side-tube readings with a U-Tube Manometer on Stand, Wall Hanging Type.
Clamp the glass tubing firmly and check the rubber connectors for leaks before taking readings.
Standard Scope of Supply
Each set includes the Bernoulli tube with its central narrowed portion, the constant-bore gradient tube, six lengths of glass tubing, two swan-necked outlet tubes and eight small pieces of rubber connecting tubing. A water supply, stand and clamps are not included.
Packing, MOQ and Lead Time
A quotation can be prepared for a single set for demonstration or for enough sets for every group in a fluids practical. Science Lab Supplies lists the packing, delivery time and price for that quantity, and spare glass tubing or manometers can be added to the same quote.
Equipped with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Egypt, Iraq, Nigeria, Kenya, Ghana and Ethiopia. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). Price the set for your fluids lab by contacting the team on the contact page, building a list in the enquiry cart, or following the lab tender page for tender-based buying.
Frequently Asked Questions
What does the Bernoulli Tube Apparatus show?
It shows that when an incompressible fluid flows through a narrower section, its speed rises and its pressure falls. The manometer column above the constriction stands lower than the columns on either side.
What is the difference between the two flow tubes?
Both measure 500 x 13 mm with three 25 mm side tubes about 150 mm apart. One has a central narrowed portion, with the middle side tube rising from it, while the other is a constant-bore gradient tube.
What accessories come with the set?
Six lengths of glass tubing for the manometer columns, two swan-necked outlet tubes and eight small pieces of rubber connecting tubing are included for joining the glass parts as needed.
Is the Bernoulli tube set made in-house?
Yes. Science Lab Supplies manufactures it at its own facility in Saha, Ambala, India, and handles each quotation itself, so details such as packing and delivery are confirmed by the factory that builds it.
Related Fluid Flow and Pressure Apparatus
Bernoulli's theorem links pressure, flow speed and tube cross-section, so the related items below extend this set into further fluid mechanics practicals on pressure and flow. Each can be priced together with the Bernoulli tubes on one quotation for a complete bench.
- Bernoulli's Theorem — horizontal Venturi tube with a manometer panel and adjustable feet.
- Bernoullis Theorem Complete with Collecting Tank — clear acrylic test section with convergent and divergent parts and piezometer tubes.
- Flow Through an Orifice — transparent tank with orifices, manometers and a traversing Pitot tube.
- U-Tube Manometer on Stand Table Model — standard manometer for pressure and differential pressure measurement.
- Fluid Pressure Apparatus (Spouting Cylinder) — three equal holes at different heights in a 400 x 68 mm cylinder.
- Pressure Measurement Bench — compares inclined and U-tube manometers with Bourdon-type gauges.
- Liquid Level Apparatus — shows that connected tubes fill to the same level whatever their shape.
Browse the full Properties of Matter range, the Fluid Mechanics range for flow benches and meters, or all physics lab equipment.
Last updated: 9 October 2026