Liquid recovery systems, also known as ‘pigging’, are common in plants and factories that process liquids, such as in food and drink production, pet food, cosmetics, paints, and personal care products. The aim of pigging systems is to recover and remove leftover liquids from pipelines, using a special projectile known as the pig. Because of its efficiency in removing large volumes of residual liquid, pigging is regarded as cost-effective, with less need for repeated CIP cycles, cleaning chemicals, and waste disposal.

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