Spring Loaded Brushes
Spring-Loaded Brushes are mounted on hardened steel springs which are mounted on the steel mandrel body pig. This allows for consistent and continuous brush pressure on the pipe wall as the pig progresses down the pipeline. They are wear compensating as the brush wears from scraping the pipe wall. There are mounted on leaf springs which have two attachment points for mounting the spring or cantilever springs which is attached at one point on the pig body. The cantilever spring allows for brush cleaning in dual diameter pipelines.