20. Drying unit The Drying unit is an on-line equipment used to dry the cylinders, coming out of washing unit by blowing the air on the sides and top surfaces of the cylinders as they move.
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24. Weigh correction unit The unit is an on-line equipment used to ensure that correct weight of LPG fuel is carried in the cylinders. Under-filled cylinders are filled with additional quantity of LPG and the weight is corrected. Overfilled cylinders are checked and the weight of LPG fuel is corrected by evacuation process.
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26. SQC system: The on-line SQC system checks the weight as well as valve and 'O' ring leak of the filled cylinders.