Water Hammer Apparatus (Product Code: SLE/EFM/18) lets students create and measure the pressure surge that travels along a pipe when flowing water is stopped suddenly. At its heart is a 60 m long coil of copper pipe with a solenoid valve at the discharge end; when the valve shuts, an electronic pressure transducer next to it captures the resulting pressure fluctuations. The apparatus serves mechanical and civil engineering courses on unsteady pipe flow, and it is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, among its engineering educational equipment for Indian and overseas institutions.
| Parameter | Detail |
|---|---|
| Test pipe | Coil of copper pipe, 60 m long |
| Water inlet | Connects to your water supply |
| Fast-closing valve | Solenoid valve at the discharge end of the pipe |
| Flow control | Second adjustable valve at the discharge, downstream of the solenoid valve |
| Bypass valve | At the inlet end, discharging to waste; regulates the mean pipe pressure before the solenoid valve shuts and allows calibration of the pressure transducer |
| Transient measurement | Electronic pressure transducer near the solenoid valve |
| System pressure | Bourdon pressure gauge between the solenoid valve and the downstream control valve |
Students first set a steady flow through the coil with the downstream control valve and adjust the bypass valve to fix the mean pressure, reading it on the Bourdon gauge. Closing the solenoid valve then stops the water almost instantly, and the transducer records a sharp pressure rise followed by a decaying series of oscillations as the wave reflects back and forth along the pipe. From the period of these oscillations and the known pipe length they estimate the pressure-wave speed and compare the peak surge with the value predicted by Joukowsky’s equation.
The long coiled pipe stretches the wave’s travel time so it can be resolved clearly on a recording instrument. Before each session, use the bypass valve and Bourdon gauge to check the transducer calibration, and bleed trapped air from the pipe, as air pockets soften the surge. The rig is a practical choice among engineering educational equipment in India for showing why pipelines need surge protection.
Jain Scientific Equipments Private Limited builds this apparatus under its ScienceLab label at Ambala in Haryana, where it develops pipe-flow and pressure teaching rigs for colleges and polytechnics. Find out more on our company profile.
Apparatus that pairs well with water hammer studies:
See the rest of the Fluid Mechanics category.
How long is the test pipe?
It is a coil of copper pipe 60 m long, which gives the pressure wave a measurable travel time.
Does it need a water supply?
Yes. The inlet connects to your water supply, and the bypass valve at the inlet end discharges to waste, so plan for a drain near the rig.
How are the pressure fluctuations recorded?
An electronic pressure transducer near the solenoid valve measures them. The display or recording instrument is not listed in our current details, so please contact us about readout options.
Can students check the transducer’s calibration?
Yes. The bypass valve sets the mean pipe pressure, which can be read on the Bourdon gauge and used to calibrate the transducer.
What electrical supply is needed for the solenoid valve and transducer?
Supply details are not in our current listing; tell us your mains supply through the contact page.
Is a calibration certificate supplied?
Any certificate requirement should be raised with us when you enquire, as availability depends on the order.
Do you ship outside India?
Yes, we supply institutions in India and international markets; include the destination and quantity in your enquiry.
To receive a quotation for the Water Hammer Apparatus, contact us or add it to your enquiry cart.
Last updated: 24 September 2026