Venturi meter and Orifice Meter Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-HLE-8958
Jlab Export is a leading Venturi meter and Orifice Meter Apparatus Manufacturer,and suppliers in India
Venturi meter and Orifice Meter Apparatus (code EL-HLE-8958) is a pipe-flow rig for calibrating a 25 mm venturi meter and a 25 mm orifice meter, set in two GI pipe lines. A 0.5 HP single-phase pump draws water from a sump, and distribution chambers with isolating cocks allow each meter to be tested on its own. JLab makes this venturi and orifice meter rig in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Pipe lines | 2, GI, each with a gate valve |
| Meters | Venturi meter and orifice meter, 25 mm size |
| Meter selection | Distribution chambers with isolating cocks, for testing one meter at a time |
| Pump | 0.5 HP, single phase, from the sump, with control valve |
| Power supply required | Single phase, 200/220 V |
| Water required | To fill the sump tank |
| Quality check | Each flow meter apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-HLE-8958 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Calibrating the Two Meters
Both meters narrow the flow and measure the pressure drop it causes. With inlet area a1, throat or orifice area a2 and differential head h, the theoretical discharge is Q = a1 a2 √(2gh) / √(a1² − a2²). The actual discharge divided by this figure is the meter’s coefficient of discharge Cd, and repeating the test at several gate valve settings gives a calibration curve of Q against √h for each meter.
Venturi Against Orifice
The venturi meter narrows gradually and opens again through a long diverging cone, so most of the pressure drop is recovered downstream and its Cd lies close to 1. The orifice plate contracts the flow abruptly into a vena contracta and leaves a turbulent wake behind it, so its Cd is much lower and its permanent head loss far higher. The orifice plate is simpler and much shorter to fit in a pipe line, which is why both types remain in use.
Other Flow Meter and Discharge Rigs
- Venturimeter and Orificemeter Calibration Set-Up — clear acrylic meters in parallel lines, read on a differential manometer.
- Discharge Through Venturimeter and Orificemeter — two pipelines from a common manifold, with measuring tank and stopwatch.
- Rota Meter Test Apparatus — two rotameters, each fitted in its own pipeline, for direct flow reading.
- Co-Efficient of Discharge Apparatus — frame-mounted rig with a 0.5 HP sump pump for discharge coefficient work.
The rig itself belongs to Hydrology Lab Equipments, a part of Mechanical Engineering Lab Equipment.
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Last updated: 30 October 2026
