Design standard:API6D ASME B16.34 DIN 3357-1 EN12516-1 

Face to face: API 6D DIN3202 

Flanged ends:ASME B16.5 DIN2542 DIN 2543 DIN2544 DIN2545 EN1092 

Test & Inspection: API 6D API598 DIN3230-3 EN12266. 

about the structure and work principle(Floating ball valve) 

Structural Feature 

Switch Indication of Hand operated Float Ball Valve 

Locking Device 

Anti- Blow out of stem 

Anti- Static Device 

Middle Flange leak-tight structure 

Full bore & Reduce bore 

API 607, API 6Fa, BS6755 & JB/T6899 Fire Safe 

Test & inspection standard API 6D, API 598.