A full-opening safety valve (FOSV) used to close off the workstring when there is flow observed. The internal diameter must be at least as large as the workstring internal diameter. Also known as ‘stabbing valve’.
A full-opening safety valve (FOSV) used to close off the workstring when there is flow observed. The internal diameter must be at least as large as the workstring internal diameter. Also known as ‘stabbing valve’.