The unique stem seal design provides superior fugitive emissions control (ISO 15848, Class BH-CO3) under recurrent and extreme thermal cycling not typically seen in Metal Seated Ball Valves.
Fugitive Emissions Testing
Capitalizing on the standard Metal Seated Ball Valve design features, Crane’s next-generation KROMBACH®'s TUFSEAT® Ball Valve is capable of better handling the harsh conditions of critical process applications, steam isolation, and temperature extremes. The unique stem seal design provides superior fugitive emissions control (ISO 15848, Class BH-CO3, and API 641 as a standard) under recurrent and extreme thermal cycling not typically seen in Metal Seated Ball Valves. Also available, this new valve can perform at AH-CO3-SSA0 at 400C. This increased control classification has historically only been associated with bellows-sealed valves.
Additionally, depending on the application in which it is used, the packing offering of new Metal Seated Ball Valves can be differentiated so users can choose which works best for their needs:
TA-Luft acc. to VDI 2440
Standard (Process Industry): ISO 15848–1&2: Class BH CO3 (< 100 ppmv)
Low-E Option: ISO 15848–1&2: Class AH CO2 (< 50 ppmv)
EPA Method 21 (Fugitive Emissions Compliance)
API 641
