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The ozone venturi injector consists of three parts: the tressurized pipe, the suction chamber, and the nozzle. It is a gas-water hybrid method that employs the Venturi principle. The ozone venture generates negative pressure by using high-speed water flow through the throat of the mixing tube, resulting in a vacuum state in the suction chamber, and the input gas is sucked into the mixing tube as a result of the pressure differential.
Model | Inlet Pipe(inch) | Air inlet (inch) | Length (mm) | Water flow rate (m3/hr) | Material |
A12057 | 1 / 4 | 1 / 8 | 57 | 0.05~0.25 | PVDF |
A25100 | 1 / 2 | 1 / 4 | 100 | 0.2~1.0 | PVDF |
A25152 | 3 / 4 | 1 / 4 | 152 | 1.0~3.0 | PVDF |
A32235 | 1 | 3 / 8 | 235 | 3.0~10.0 | PVDF |
A48275 | 1.5 | 1 / 2 | 275 | 10~25 | PVDF |
A58295 | 2 | 1 / 2 | 295 | 25~50 | PVDF |
1. Innovative Venturi design Innovative design of convergent, throat and divergent sections of Venturi for more injection rate.
2. Additional Valve Provided Additional Valve provided for suction side to prevent reverse flow of water.
3. Additional Fine Suction Filter To avoid entry of solid particles in system, additional suction filter is provided.
4. Various Option Available Venturies are available from ½", ¾", 1", 1¼", 1½", 2"
5. Made of engineering plastic.
6. Excellent chemical resistance to most of the chemicals.
7. Highly efficient and compact differential pressure injection device.
8. Economical and low cost option.
9.Available in ¾", 1", 1¼", 1½" and 2" BSP inlet / outlet connection. Any other size can be supplied on demand.
Working Theory
In an ozone injection system, the ejector operates on the Venturi principle. Water or another liquid enters through the liquid inlet and passes through a constricted throat inside the ejector. As the liquid accelerates through this narrow section, its pressure drops significantly, creating a strong vacuum. This vacuum draws ozone gas from the gas inlet into the ejector.
The gas is then sheared into fine bubbles by the high-velocity liquid flow, promoting rapid mass transfer. The resulting two-phase mixture—liquid and dissolved ozone—exits through the liquid‑gas mixing outlet and is delivered to the treatment tank or pipeline. The intense turbulence and bubble breakup ensure high ozone dissolution efficiency. Proper liquid flow rate and backpressure control are critical for maintaining the vacuum required to aspirate the gas. This simple, no-moving-parts design makes ejectors a reliable and energy‑efficient method for ozone disinfection, oxidation, or wastewater treatment.
What is a Venturi Injector?
Widely used for the injection of air, oxygen, and ozone. Also compatible with liquids. Tests have shown that when installed properly, injectors can transfer ozone into water with efficiencies as high as 99%.
The ozone venturi injector is made of three parts, which is tressurized pipe, the suction chamber, and the nozzle. It is a gas water hybrid approach which use the venturi principle. The ozone venture produce the negative pressure which use the high-speed water flow the throat of the mixing tube, cause the vacuum state of the suction chamber, under the influence of the pressure difference, the input-gas is sucked to the mixing tube.
The water is stir strongly, gas is smashed to the small air bubble, turn into Gas-water emulsion of the mist, finally, be erupt through the spread port of the mixing tube, in continued, begain the Vortex stirring in the next tube, make the gas dissolve in the water.
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