Darcy's Law Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-ELA-5531
Jlab Export is a leading Darcy's Law Apparatus Manufacturer,and suppliers in India
Darcy’s Law Apparatus (code EL-ELA-5531) is a self-contained, water-recirculating test rig used to verify Darcy’s law and find the coefficient of permeability of a porous medium, in fluid mechanics, hydraulics and soil mechanics labs. Water flows through a clear acrylic cylindrical test section while a differential manometer reads the pressure difference across it. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Purpose | To study and verify Darcy’s law and find the coefficient of permeability of a given porous medium |
| Test section | Clear acrylic cylindrical test section in a pipeline |
| Water circulation | Self-contained, closed-loop recirculating unit with a sump tank and a centrifugal pump |
| Flow control | Flow control valve and bypass valve in the water line; valves at the downstream end regulate the flow |
| Flow measurement | Measuring tank, timed with a stopwatch |
| Pressure measurement | Pressure tappings on the test section connected to a differential manometer |
| Tanks and wetted parts | Stainless steel |
| Structure | Compact, stand-alone, painted structure; simple to operate and maintain |
| Quality check | Each apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-ELA-5531 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Darcy’s Law Apparatus Used For?
Darcy’s law states that the rate of flow of water through a porous medium is proportional to the cross-sectional area and to the hydraulic gradient — the head loss divided by the length of the flow path. The constant of proportionality is the coefficient of permeability, which tells engineers how easily water seeps through a soil or filter bed and underpins seepage, groundwater and drainage calculations. The law holds for slow, laminar seepage, which is the condition in most soils.
On this apparatus, students set different flow rates with the flow control and bypass valves, measure each discharge with the measuring tank and a stopwatch, and read the pressure difference across the acrylic test section on the differential manometer. Plotting discharge against hydraulic gradient checks the linear relationship and gives the coefficient of permeability. The clear test section lets the class see the medium and the flow, and closed-loop circulation keeps water use low. It is used in civil engineering colleges, polytechnics and technical institutes for fluid mechanics, hydraulics or geotechnical practicals.
What to Specify When Ordering
- Porous medium — state the material you intend to test in the acrylic section.
- Mains supply — give the voltage and frequency at your laboratory for the centrifugal pump.
- Quantity — the minimum order is 10 units.
- Related fluid mechanics apparatus — Bernoulli and Reynolds apparatus are separate products that can be quoted on the same enquiry.
Frequently Asked Questions
What does the Darcy’s law apparatus measure?
It is used to verify Darcy’s law and to find the coefficient of permeability of a given porous medium from the measured discharge and pressure difference.
How is the flow rate measured?
With a measuring tank and a stopwatch: the time taken to collect a known volume gives the discharge. The flow control and bypass valves let you repeat the test at different flow rates.
How is the pressure difference measured?
Pressure tappings on the test section are connected to a differential manometer, which reads the pressure difference across the porous medium.
Is the water recirculated?
Yes. It is a self-contained, closed-loop unit with its own sump tank and centrifugal pump, so the same water is pumped round the circuit.
What materials are the tanks made of?
The tanks and wetted parts are stainless steel, and the test section is clear acrylic so the flow can be watched.
Why does Darcy’s law apply only to laminar flow?
The straight-line relation between flow and hydraulic gradient assumes slow, viscous seepage. At higher velocities through coarse media, inertia adds extra losses and the relation departs from linear, so tests are run at low flow rates.
What information is needed for an export quotation?
Send the quantity, your mains supply, the destination country and port or city, delivery terms (for example FOB or CIF), any packing or labelling needs, and the tender reference if there is one.
Who manufactures this apparatus?
Jain Laboratory Instruments Pvt Ltd, trading as JLab, builds it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of engineering and science laboratory equipment in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The Darcy’s law apparatus is fabricated at JLab’s own works rather than bought in from a trader, which means engineering colleges, dealers and importers deal with the manufacturer itself; each unit is visually inspected before dispatch, and repeat orders and spare parts are handled by the maker. JLab exports worldwide and ships to buyers in every region — for example Qatar in the Middle East, Panama in Central America and the Caribbean, Malawi in East Africa, Benin in West Africa and Poland in Eastern Europe. Tender buyers can refer to the JLab lab tenders page.
Related Fluid Mechanics Apparatus
- Bernoullis Theorem Apparatus — an acrylic convergent–divergent test section on a similar self-contained recirculating unit.
- Reynolds Apparatus — a glass tube with dye fed into the flow, for observing how flow behaves as the rate changes.
- Water Permeability Test Kit — for testing the water permeability of concrete.
See the Fluid Mechanics and Hydraulics Lab Equipment range, along with Educational Laboratory Apparatus and Laboratory Apparatus.
Request a Quote
For a quotation, use the Add To Cart enquiry button on this page or the contact page, giving the quantity, your mains supply, the porous medium you plan to test and the delivery destination.
Last updated: 15 October 2026
