STANDARDS - Design and Manufacture: API 6D - F-F Length: ASME B16.10 - BW Ends Specification: ASME B16.25 SIZES AND PRESSURE RATINGS - NPS 2" to 48" - CLASS 150LB to 900LB MATERIALS (Carbon Steel) - Body & Bonnet: A105/A216 WCB - Stem: A182 F6a - Ball: A105+ENP/A216 WCB+ENP - Seat: A105+ENP - Sealings & Gaskets: VITON, Graphite (+SS304) , Nylon, PEEK, PCTFE MATERIALS (Stainless Steel) - Body & Bonnet: A182 F316/A351 CF8M - Stem: A182 F316 - Ball: A182 F316/A351 CF8M - Seat: A182 F316 - Sealings & Gaskets: VITON, Graphite (+SS304) , Nylon, PEEK, PCTFE OTHERS - Other material combinations are available on request, e. g. used for low temperature - Anti-static design is applied. - Bleed valve in A105+ENP/A182 F316 is applied for safety consideration.