Process Pigs
 
Process Pigs displace product from the transfer line and clean the pipeline walls.  As the pig moves through the transfer line, the trapped product is pushed out and the tightly compressed pig wiper discs wipe the pipeline walls clean.  Pigs are manufactured from many different materials to allow matching the chemical compatibility and heat tolerance of the pig with the product being transferred. Where magnetic pig detection is used, the pigs have imbedded magnets that are specifically chosen to work in conjunction with both the Magnetic Pig Sensor and carbon or stainless steel piping material to provide reliable pig detection.