Applicable standards: Design STD: API 6D,BS 5351,ASME/ANSI B16.34 Face To Face: ASME B16.10 Flange End Connection: ASME/ANSI B16.5 Welded End Connection: ASME/ANSI B16.25 Fire safe: API 607 Inspection And Test: API598\API6D Design description: Full port design BB,bolted bonnet,split body Floating ball type Blow-out proof stem Fire durable construction Anti static device ISO5211 mounting pad Flanged or butt welding ends Available with BG operator