API Standard Floating Flange Ball Valve

Flanged Floating Ball Valve is a fundamental and widely used type of Ball Valve. Its name derives from its core operating mechanism: the ball inside the valve is not fixed but is allowed to float slightly between the seat rings.

For procurement of durable and high-quality valves of this type, Wenzhou Chenyu Valve Co., Ltd. (Chenyu Valves) supplies Flanged Floating Ball Valves manufactured to international standards, ensuring performance and longevity in your piping systems.

Main Specifications of Flanged Floating Ball Valve

Main Advantage of Flanged Floating Ball Valve

• Simple Design & Cost-Effectiveness: Features fewer internal components and an uncomplicated structure, resulting in lower manufacturing costs and a highly economical solution for standard on/off services.

• Reliable Pressure-Assisted Seal: Utilizes line pressure to push the floating ball against the downstream seat ring, creating a self-energizing seal. Shut-off capability typically improves with increasing system pressure within its range.

• Low Operating Torque: The floating design generates less friction during operation compared to trunnion-mounted designs, allowing for easier manual operation or the use of smaller, more cost-effective actuators.

• Easy Maintenance: Many designs are top-entry or split-body, enabling seat replacement and internal inspection without removing the entire valve from the pipeline, minimizing downtime.

• Robust Flanged Connection: The flanged ends provide a strong, rigid, and leak-resistant connection to the piping system, suitable for various industrial environments.

• Good Versatility: When paired with appropriate body and seat materials (e.g., WCB, CF8, CF8M), it is suitable for a wide range of common media including water, oil, natural gas, steam, and many chemical fluids.

Applications of Flanged Floating Ball Valve

• Media: Specifically suited for handling solvents, acids, water, natural gas, and other industrial fluids.

• Industries: Ideal for critical applications in petrochemical, chemical processing, oil & gas transmission, and power generation.

• Service Conditions: Engineered to perform reliably in harsh working conditions, including those requiring fire-safe certification, corrosion resistance, and secure, leak-free operation.

Structure & Materials

The valve is constructed for durability and performance across a wide service range.

• Body Materials: A versatile selection includes WCB (general service), LCB (low-temperature), and stainless steels like CF8 (304), CF8M (316), CF3M (316L), and SS321 for corrosion resistance and high-temperature applications.

• Sealing System: Offers dual-sealing capability for optimal performance.

  • Primary Seal (Soft): Uses PTFE or PPL for excellent bubble-tight shut-off (Zero Leakage) in standard service.

  • Secondary/ Fire Seal: A Metal-to-Metal seal provides emergency sealing under fire conditions or high-temperature degradation of the soft seat.

• Critical Safety Features: Integrated Anti-static device and Anti-blowout stem design enhance operational safety.

Technical Specifications:

Main Dimension:Class 150LB

CLASS300:

CLASS600:

Main Materials and Parts:

Standards & Certifications

This product is engineered and manufactured to a comprehensive set of major international standards, ensuring reliability, safety, and interchangeability.

• Design & Manufacture: API 608 / API 6D - Core standards for metal ball valves (API 608) and pipeline valves (API 6D), guaranteeing robust design for industrial service.

• Dimensional Compliance:

  • Face-to-Face: ASME B16.10

  • Flanged Ends: ASME B16.5

  • Butt Weld Ends: ASME B16.25

• Testing & Inspection: API 598 - Defines rigorous shell and seat pressure tests to ensure Zero Leakage performance.

• Safety & Auxiliary Features:

  • Fire-Safe Design: Meets relevant Fire Safe standards (e.g., API 607/API 6FA), ensuring secondary metal-to-metal sealing in case of fire.

  • Actuator Mounting: ISO 5211 mounting pad ensures direct compatibility with a wide range of standard gear, electric, and pneumatic actuators.