All Knapp Polly Pig are availble with both ends dished to enhance dewatering capabilities.

All Knapp Polly Pigs are available with noses on each end to give the pig enhanced bi-directional capability.

The All Knapp Polly Pigs larger than 2″ are available with cavities and retaining doors to carry electromagnetic or acoustix transmitters used to locate the pig’s position.

All Knapp Polly Pigs are available with by-pass ports running from the base through the nose of the pig.

All Knapp Polly Pigs are available with nylon handling ropes, lifting straps or steel wire cable

All Knapp Polly Pigs are available in extended length versions to assist the pig in passing through piggable wyes, and offset or unbarred tees.