Introducing the Dual-Pig Pigging System

Specially Developed by HPS for the Paints and Coatings Industry

What is a Dual-Pig System?DUAL PIGGING SYSTEM

Dual-pig systems use two separate pigs. The two pigs are introduced into the line with a measured amount of either solvent or water between the two pigs.

The product-pig-cleaning solution-pig combination is propelled to the destination, recovering the product and flushing the line with the water/solvent product that is between the two pigs.

Benefits of Dual-Pig Systems

Dual-pig pigging systems recover up to 99.5% of product residue remaining in the pipeline when a transfer is complete. They’re one of the most effective ways for paints and coatings manufacturers to:

HPS Dual Pigging System

And because of the dual cleaning capability from the use of two pigs, this ensures pipe cleanliness and hygiene.

Why Paints and Coatings Manufacturers are Using Dual-Pig Systems?

Without a dual-pig system, large quantities of solvent, water (or both) are often used to evacuate product residue and clean the pipe after each transfer.

The pipeline must be cleaned to a high standard to prevent the risk of cross-contamination as various colours of paint may share the same pipeline. The changeover process also hinders product yield and generates large volumes of contaminated wastewater that is costly to manage.

Because the dual-pig system uses a measured amount of solvent or water sandwiched between the pigs, this eliminates the lengthy requirement to flush out the entire line with solvent or water. So, not only does the dual-pig system reduce solvent consumption and water usage, but it increases yields, speeds up changeover times, improves production capacity and lowers the risk of product cross-contamination.

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