High-Performance Bi-directional Triple Offset Butterfly Valve

Qisheng High-Performance Triple Offset Butterfly Valve

Welcome to the next generation of flow control. The Qisheng Triple Offset Butterfly Valve represents the pinnacle of valve engineering, designed specifically to tackle the most demanding industrial applications. Whether you are dealing with high-pressure pipelines, extreme temperature fluctuations, or critical shut-off requirements, our bi-directional, metal-seated valve guarantees zero leakage and uncompromising safety. With its robust all-metal construction, this valve is intrinsically fireproof and built to deliver long-term reliability in harsh environments.

The Triple Offset Advantages

• Frictionless Operation: The unique geometric configuration completely eliminates friction and mechanical wear between the seat and the sealing ring during the entire 90-degree rotation.
• Bubble-Tight Seal: The design ensures a highly reliable, bubble-tight seal at the final shut-off position.
• Reduced Operating Torque: The absence of seating friction significantly lowers the required operating torque, allowing for more efficient and cost-effective actuation.
• Extended Service Life: By eliminating mechanical wear on the sealing surfaces, the valve’s operational lifespan is dramatically extended even in high-cycle applications.

Core Engineering Features

• Bi-Directional Zero Leakage: Engineered to provide flawless, bi-directional tight shut-off, meeting the strictest industry leakage criteria for critical isolation.
• Intrinsically Fireproof: The all-metal structure ensures inherent fire safety and leak-tight performance, making it highly dependable for flammable or hazardous fluid processing.
• Anti-Blowout Stem: Designed with an integrated anti-blowout stem structure that completely conforms to API 609 safety standards, protecting both personnel and the pipeline system.
• Advanced Seating Options: Supplied with a standard laminated metal seal. Optional configurations include a full metal seal or a replaceable seat. Additionally, an STL (Stellite) hard-faced seat can be applied to handle highly abrasive or severe working conditions.
• Heavy-Duty Construction: Manufactured with a one-piece cast body and a robust one-piece shaft. The stem and disc are securely jointed by a heavy-duty key or a pin-key combination for maximum torque transmission and structural integrity.

Typical Applications

Thanks to its robust, fireproof, and zero-leakage design, the Qisheng Triple Offset Butterfly Valve is highly suitable for a variety of demanding industries, including:

• Oil & Gas: Refining, petrochemical processing, and offshore platforms requiring fire-safe performance.
• Power Generation: Steam isolation, cooling water systems, and critical shut-off applications.
• Chemical Industry: Handling corrosive, hazardous, or high-temperature chemical fluids safely.
• Water Treatment: Large-scale water distribution and desalination plants needing durable, long-lasting flow control.

Technical & Operating Specifications

Our valves are strictly manufactured and tested in accordance with top global standards to ensure seamless integration into your existing pipeline infrastructure.

• Design & Manufacturing Standards: API 609, ASME B16.34
• Testing & Inspection Standard: API 598 / ISO 5208
• Face-to-Face Dimensions: Conforms to ASME B16.10 and API 609 (Available in Short Pattern, Long Pattern, Wafer, and Lug configurations)
• Pressure Ratings: ASME Class 150, Class 300, and Class 600
• Size Range: NPS 2″ to NPS 60″ (DN50 to DN1500)
• Temperature Range:
  • Carbon Steel (WCB): -29°C to 425°C (-20°F to 797°F)
  • Stainless Steel (CF8M): -196°C to 600°C (-321°F to 1112°F)
• End Flange Connections: Compatible with ASME B16.5 (up to 24″) and ASME B16.47 Series A/B (26″ and above)
• Actuation Mounting: Standardized Yoke mounting flange diameter according to ISO 5211 (F07 to F60), compatible with manual gear, pneumatic, or electric actuators.

Comprehensive Material Configurations

To accommodate diverse media and environmental conditions, the Qisheng Triple Offset Butterfly Valve is available in premium Carbon Steel and Stainless Steel configurations. Below is the detailed material breakdown based on product classes: