
ASME B16.5 Flange Top Entry Ball Valve. Top Entry Design: Enables online maintenance without pipeline disassembly. Retractable Valve Seat: Allows replacement of stem, seals, and seats during operation. Low Operation Torque: Integrated ball and stem design with sliding bearings for minimal friction. Emergency Sealant Injection: Compound injection holes provide secondary sealing for stem or seat damage. Fire Safe Design: Meets API6FA/API607 standards with expansion graphite rings for fire conditions. Double Block & Bleed: Releases cavity pressure to low pressure end via self-relief seat. Anti-Static Construction: Conforms to API6D and BS5351 regulations for safe operation. Flexible Driving Options: ISO 5211 top pad supports manual, electrical, pneumatic, and hydraulic drivers.