Water Hammer Demonstration Unit Manufacturer,Supplier and Exporter in India
Product Code : EL-SML-12123
Quick Answer: The Water Hammer Demonstration Unit is a rig with an 11 m stainless steel tubing coil, a pneumatic valve and pressure transducers, used to demonstrate water hammer, cavitation and shock waves in water and to calculate the speed of sound in water.
Last updated: October 2026
Key Features
- 11 m coil of stainless steel tubing with a pneumatic valve
- 1 pressure transducer upstream and 1 downstream of the coil
- Flowmeter with adjustment valve, Bourdon gauge and control cabinet
- Water tank with drain valve, pump and bypass valve
- Vertical tube with a bleed valve to atmosphere for controlling the volume of entrapped air
- Needs a compressed air supply and a digital memory-type oscilloscope
Technical Specifications
| Specification | Value |
|---|---|
| Coil | 11 m stainless steel tubing |
| Valve | 1 pneumatic valve |
| Sensors | 1 pressure transducer upstream, 1 downstream |
| Other instruments | 1 flowmeter with adjustment valve, 1 Bourdon gauge, 1 control cabinet |
| Water circuit | 1 water tank with drain valve, 1 pump, 1 bypass valve |
| Dimensions | 1350 × 650 × 2150 mm |
| Weight | About 100 kg |
| Supply | 220 V single phase, 50 Hz |
| Also required | Compressed air supply; digital memory-type oscilloscope |
| Optional | Compressor |
About This Product
Water hammer is the pressure surge produced when flowing liquid is stopped suddenly by a valve. In fluid mechanics and hydraulics classes the effect is shown by closing a fast valve on a pipe and recording the pressure before and after the coil with transducers and an oscilloscope. The pressure wave travels along the pipe and returns as a negative wave, and its travel time gives the speed of sound in water. If the pressure falls to the vapour pressure of the water, cavitation appears. Students also study damping and the elasticity of the pipe walls.
Frequently Asked Questions
Q1. What does the Water Hammer Demonstration Unit demonstrate?
It demonstrates water hammer, cavitation and shock wave propagation. It is used to calculate the velocity of sound in water, investigate damping in pipes and study the elasticity of the pipe walls.
Q2. How is the speed of sound in water found?
Closing the pneumatic valve sends a pressure wave along the pipe. The time the positive pressure wave takes to travel through the pipe is used to calculate the speed of sound in water.
Q3. What else is needed to run it?
A 220 V single phase, 50 Hz supply, a compressed air supply and a digital memory-type oscilloscope. A compressor can be supplied as an option.
Related: Structural Mechanics Lab, Falling Sphere Viscosimeter, Flow Visualisation Wind Tunnel, Rotary Compressor.
For a quotation on the Water Hammer Demonstration Unit, contact School Lab Equipment India.