1). DESIGN: API 602, ASME B16.34, BS 1873, DIN 3356
2). ENDS CONNECTION: ASME B16.5, ASME B16.25, ASME B1.20.1, ASME B16.11, EN1092
3). FACE TO FACE : ASME B16.10, EN558
4). Direct Mounting: ISO 5211
5). Valves Marking: MSS SP-25
6). TEST: API 598, ISO 5208, EN12266-1