Sealing systems to TA Luft and ISO 15848 – a challenge for valves with gland seals

Both TA Luft [1] and DIN EN ISO 15848-1 [2] [3] aim to mitigate or reduce fugitive emissions which are harmful to the environment and human health. TA Luft is a comprehensive German regulation which specifies binding technical requirements for classified installations in accordance with the 4th Federal Immission Control Act. EN ISO 15848-1 [2] [3] is an international standard which provides users with evaluation criteria for classifying valves (isolation and control devices), to enable different designs or brands to be compared. Although compliance with the requirements of TA Luft is considered to be proof of a sealing system’s quality –not just in Germany but in many other countries too – EN ISO 15848-1 [2] [3] is playing an increasingly important role in the chemical, petrochemical and process industries.