● Blow-out Proof Stem
● Anti-Static Device for Ball-Stem-Body
● Pressure Balance Hole in Ball Slot
● 2 Belleville Washer to Self-adjust Packing
● ISO 5211 Mounting Pad for Easy Automation
● Fire Safe Design Available

● Design:ASME 16.34 API 608
● Wall Thickness:ASME B16.34,EN12516-3
● Flange Ends: ASME 16.5
● Fire Safe Design Acc:API 607
● Inspection & Testing:API 598,EN 12266
● Face to Face ACC:ASME 16.34
● Inspection and Testing:API598,API 6D