The purified drinking water from the water treatment system is sent to the water chilling system. The chiller consists of PHE where glycol circulates at- 2°C to 8°C temperature. The purified water at ambient temperature of 28°C to 35° C passes through PHE and comes out at 2°C to 4°C. This is done to achieve CO2 gas and water meshing.

The cold water is then taken to carbonator storage tank which consist of a high level and low level switch. The low level switch ensures protection to the carbonator high pressure pump from running dry. The carbonator is provided with CO2 gas from a CO2 Cylinder. The carbonator system reduces the CO2 gas pressure in the cylinder to 9.5 kg/cm2 by means of a jumbo regulator. Prior to the gas passing to the jumbo regulator the CO2 gas which is at -10° C to –32° C in the cylinder is heated by immersed copper tubes in a hot water bath.

The temperature of CO2 gas is brought to 2°C to 4°C. The gas after passing through jumbo regulator is injected into the carbonator ventury system after once again passing through a stainless steel, gas volume regulator. The gas volume regulator determines the strength of the soda in the final product. General gas volume for Pet soda is set a 4.2 to 4.8 to a maximum of 5 gas volume. The glass bottles can be filled with soda even as high as 5.5 gas volume.

The high pressure pump of the carbonator pumps the water through the injection system i.e., Ventury to the carbonator diffusion tank. During this process CO2 gas mixes along with the water and enters the diffusion chamber.

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