API 6D Pig Ball Valve - How Pigging with a Ball Valve Works - Batu Valve

Pigging is the cleaning or inspection of a pipeline by means of a pig passed through it. The pig launcher and receiver ball valve allows the pig to be launched into and received from the line in a single body; it is used on platforms with no space for a separate pigging station, on congested manifolds and on lines within built-up areas.