Dual Diameter Pigs

Dual Diameter PigsAfter many years in the industry, Drinkwater Products understands how the size and design of pipe pigs influence their efficiency in the pipeline. We can supply dual diameter pipe pigs with the required options to deliver the level of flexibility your pipeline needs.

The inclusion of cups, discs and brushes may be needed to enable the dual diameter pig to traverse sections of the line where two sizes of internal diameter may be present.

In some cases, the complexity of the design may require full-scale proof testing.

Drinkwater Products offers the following dual diameter pigs:

Ultra-Seal Lite - The Ultra-Seal Lite Pig is a hand-crafted, custom-built pig. The specific design and materials for each pig are determined by the configuration of the pipeline and operational requirements of the pig. Typically the Ultra-Seal Lite Pig is used for dewatering and fluid control in multi-dimensional pipelines. Ultra-Seal Lite pigs can be modified to accommodate transmitters, magnets and/or radioactive sources. Ultra-Seal Lite pigs can also be outfitted with pull straps to make pig removal easier.

Nova Cast - The Knapp Nova-Cast Pig is a custom-designed, all-urethane, one-piece, composite pipeline pig made to accommodate special pipeline configurations with virtually limitless combinations of discs and cups of varying urethane hardnesses. The Nova-Cast is available in configurations that allow the pig to pass through multiple-diameter piping while retaining the ability to scrape paraffin or remove liquids.

Dual Diameter - The Enduro Dual-Diameter Pigs are designed to withstand the heavier wear due to multi-dimensional pipe. This pig provides cleaning action and has proven to hold a great seal through multi-diameter lines. Design may be varied to specific line needs; i.e. bend radius requirement, valve bowl lengths etc. and can also be outfitted with brushes specially designed for multi-diameter cleaning.


The Knapp Nova-Cast Pig is a custom-designed, all-urethane, one-piece, composite pipeline pig made to accommodate special pipeline configurations with virtually limitless combinations of discs and cups of varying urethane hardnesses. The Nova-Cast is available in configurations that allow the pig to pass through multiple-diameter piping while retaining the ability to scrape paraffin or remove liquids.

The Ultra-Seal Lite Pig is a hand-crafted, custom-built pig. The specific design and materials for each pig are determined by the configuration of the pipeline and operational requirements of the pig. Typically the Ultra-Seal Lite Pig is used for dewatering and fluid control in multi-dimensional pipelines. Ultra-Seal Lite pigs can be modified to accommodate transmitters, magnets and/or radioactive sources. Ultra-Seal Lite pigs can also be outfitted with pull straps to make pig removal easier.

Drinkwater’s Multi-Diameter Pigs are designed for aggressive cleaning in multiple diameters lines. The engineered design offers superior seal and brushing capabilities critical for maintaining these challenging lines. They are ideal for pre-cleaning runs before an ILI run as well.