Before［ PVC spring hose / PVC braided hose ］

A spring hose constructed with a steel wire for strength was used for a beverage. The steel wire had begun to rust at the end of the hose where the fitting was fastened, so a braided hose with a thread was used instead of a steel wire to ensure the operation was sanitary. However, the vacuum pressure caused the hose to collapse and lose suction. The fluid flowed backwards, causing the production line to be stopped.

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