Foam Pig Guide

LB   -   Light Density Bare Swab

Description: 2-pound-per-cubic-foot density foam cylinder with 90 Shore A durometer urethane coating on rear only.  Also available in bullet shape.

Alternate Functions: Daily pigging where pressures are low, but cleaning is needed to reduce rapidity of buildups.  Used as a gauging pig when progressive pigging is performed in order to ascertain reduced line diameter.  Used as a sealer pig when progressive cleaning and smaller-than-line-size pigs are being run, by preventing too much bypass of the cleaning pig.