What is a Product Recovery (Pigging) System?
The most important component is the Pig, which has tight scraping/sealing rings. The Pig is propelled through piping, by water, product, or other gas or liquid and wipes the pipe walls to displace solids or liquids left in the pipe. The patented design ensures virtually no bypass and complete product removal or separation.
The Pig is stored out of the product flow, at either end of the piping run in a chamber and is propelled into and through the pipe by a liquid or gas. A Product Recovery System can form part of a new installation or be retrofitted into an existing installation. In either case the pipe run has to be suitable for the pig to pass smoothly, with no obstructions.