Water Hammer Demonstration Unit Manufacturer,Supplier and Exporter in India
Product Code : EL-EELE-11363
Quick Answer: The Water Hammer Demonstration Unit shows shock waves travelling through water at sonic velocity along an 11 m coil of stainless steel tubing, with a pressure transducer on each side of the coil to pick up the wave.
Last updated: October 2026
Key Features
11 m coil of stainless steel tubing as the test pipe.
Two pressure transducers, one upstream and one downstream of the coil.
Pneumatic valve for sudden closure, with a Bourdon gauge.
Flowmeter with adjustment valve, pump and bypass valve.
Water tank with drain valve, plus a control cabinet.
Vertical tube with a bleed valve to atmosphere for setting the entrapped air volume.
Technical Specifications
| Specification | Value |
|---|---|
| Test pipe | 11 m coil, stainless steel tubing |
| Pressure transducers | One upstream and one downstream of the coil |
| Valves | Pneumatic, bypass, flow adjustment, drain and bleed |
| Instruments | Flowmeter, Bourdon gauge |
| Dimensions | 1350 x 650 x 2150 mm |
| Weight | About 100 kg |
About This Product
When the pneumatic valve shuts, pressure climbs quickly to its theoretical value and holds almost steady while the shock wave runs the length of the pipe, then returns to the transducer as a negative pressure wave. Timing the positive wave over the pipe gives the speed of sound in water, and if the pressure falls to the vapour pressure of the water, students can see cavitation take place.
Frequently Asked Questions
How is the speed of sound in water found with this unit?
The time the positive pressure wave takes to travel through the pipe is picked up by the pressure transducers, and that travel time is used to calculate the speed of sound in water.
Can cavitation be demonstrated?
Yes. Cavitation occurs when the pressure in the conduit reaches the vapour pressure of the water.
What is the bleed valve for?
A vertical tube connected to the circuit has a bleed valve open to atmospheric pressure, which is used to control the volume of air trapped in the system.
Related: Electronics Engineering Lab Equipments, Water Temperature Control Bench, Ion Exchange Unit.
For a quotation on the Water Hammer Demonstration Unit, contact Educational Lab Equipments.
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