1) Design and manufacture: API 6D, ASME B16.34 2) Face to face dimension: ASME B16.10, API 6D 3) Welding ends dimension: ASME B16.25 4) Pressure-temperature rating: ASME B16.34 5) Inspection and test: API 598, API 6D 6) Type of operation: manual, gear, electric, pneumatic, gas over oil 7) Size: NPS 2" 8) Pressure: class 150lbs~1,500lbs 9) Anti-static design, fire safe design: as per API 607, 6FA 10) Material: A105, LF2, F304, F304L, F316, F321, F51 Packing: plywood case