Polly Pigs are manufactured from flexible, open cell urethane foam and are available in numerous designs and
Polly Pigs are manufactured from flexible, open cell urethane foam and are available in numerous designs and density ranges. The pigs are available for any pipeline application, and in sizes up to 12-ft.-dia. The pigs are manufactured in low-density swabs, medium density, and hard density. Low-density foams are more flexible than higher density pigs. Higher density foams have more tear strength and wear resistance than lower density foams.
Custom designed foam pigs are available for multidimensional pipelines, harsh chemical products, and purpose built designs. They are also available in double dish designs, special lengths and diameters, handling ropes and steel cables, transmitter cavities, etc. Standard designs include bare external surfaces, spiral or criss cross bands of urethane coating, and cleaning surfaces such as silicon carbide, urethane or steel wire brushes, and steel cutter studs.
Knapp Polly Pig, Inc., 1209 Hardy St., Houston, TX 77020. Tel: 713-222-0146; Fax: 713-222-7403.