Flange Floating Ball Valve

The Flange Floating Ball Valve is a type of quarter-turn valve featuring a floating ball design, where the ball is not fixed to a trunnion but is held in place by the valve seats. Under the pressure of the medium, the ball automatically adjusts its position to press tightly against the seat, achieving excellent sealing performance. Equipped with flange connections, this valve allows for quick and convenient installation and disassembly, greatly reducing maintenance time and labor costs. It is widely used for cutting off or regulating the flow of various media in industrial pipelines, with outstanding adaptability to different working conditions.

1.Superior Sealing Performance : Adopts a bidirectional self-sealing mechanism. Under medium pressure, the floating ball moves toward the outlet seat to form dynamic sealing, with leakage ≤ 1 × 10⁻¹⁰ m³/s (API 598 Class IV), effectively preventing medium leakage and cross-contamination, which is especially suitable for flammable and toxic media applications.

2.High-Strength Material System : The valve body, ball, and stem are made of high-quality materials such as carbon steel (WCB), stainless steel (304/CF8, 316/CF8M), and alloy steel, with excellent strength, corrosion resistance, and high-temperature resistance. The seat is available in PTFE, RPTFE, PEEK, or metal hard seal (Inconel) to meet different temperature and medium requirements, with a temperature adaptability range of -196℃ to 550℃.

3.Low Flow Resistance & Energy Saving : Full-bore design with a resistance coefficient ≤ 0.8, reducing pressure loss by 40% compared to globe valves and saving about 15,000 kWh of annual pumping energy for industrial systems. The mirror-polished ball surface (Ra ≤ 0.8 μm) minimizes medium deposition, making it suitable for fluids with trace particles.

4.Flexible Operation Modes : Supports manual, pneumatic, and electric operation methods to meet diverse automation needs. Manual valves feature a rugged and light lever with a locking device at full open and full close positions to prevent misoperation and accidental switching caused by pipeline vibration. Electric actuators have a response time ≤ 15s, and pneumatic actuators support 5s quick shut-off, ensuring efficient operation.

5.Easy Installation & Maintenance : Flange connection design conforms to ASME B16.5, EN 1092-1, and DIN 2501 standards, ensuring compatibility with global pipeline systems. The two-piece or split body design allows for easy disassembly and maintenance without removing the entire valve from the pipeline, reducing downtime and maintenance costs.

6.Safe & Reliable Design : Equipped with blow-out proof stem (compliant with ASME B16.34) and double anti-static devices, eliminating the risk of static sparks and ensuring the safe operation of the pipeline system, especially in flammable and explosive environments. Fire-safe design (certified to API 6FA/API 607 on request) ensures sealing performance even in fire accidents, providing an extra layer of safety.

- Petroleum & Natural Gas Industry : Used in oil exploration, refining, and natural gas transmission pipelines for cutting off and regulating oil, gas, and condensate media.

- Chemical Industry : Suitable for pipelines conveying corrosive media, organic solvents, and chemical reagents, with strong corrosion resistance and reliable sealing performance.

- Power Generation Industry : Applied in thermal power plants, nuclear power plants, and hydropower plants for controlling steam, water, and other media in boiler systems and cooling pipelines.

- Water Treatment & Urban Construction : Used in water supply and drainage systems, sewage treatment plants, and building water systems for fluid control.

- Other Industries : Metallurgy, food processing, pharmaceutical, and marine industries, meeting the diverse flow control needs of different working conditions.

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