... 3) Flange dimensions: ASME B16.5, ASME B16.47 (DIN 2501), ASME B16.25 4) Inspection & testing: API 598, API 6D ... ) Operation: Manual, worm gear, electric, pneumatic 2) Material availability: A537, PPS, ST37, 1020, A53 3) Anti-static design: Anti-fire design ...