Knapp manufactures batching pigs with two, or more replaceable urethane cups.

Knapp manufactures scraping pigs with replaceable urethane cups, discs and steel wire brushes.

Knapp manufactures bi-directional pigs with two or more replaceable urethane discs.

Knapp manufactures multi-dimensional pigs capable of traversing two or more pipe sizes.

Knapp metal mandrel pigs are available with optional bumper noses, check valve ramps, transmitter adapters and more.