The Double Offset Butterfly Valve with Rubber Seating is a high-performance industrial valve engineered for superior sealing and efficient flow control. Specifically designed for water, oil, and gas applications, this valve utilizes a double-offset design to reduce seat friction and wear, ensuring a long operational lifespan and tight shut-off capabilities across a wide range of sizes from 4" to 144".
Manufactured in strict accordance with international standards including API 609, BS5155, and EN593, our valves are built with premium materials ranging from ASTM cast irons to high-grade alloys like Inconel and Monel. With a focus on safety and reliability, each unit features an anti-blow out stem and undergoes rigorous 100% hydraulic and air testing to meet the demanding requirements of global industrial piping systems.
| Size Range | 4" ~ 144" | Pressure Ratings | 150LB, PN6, PN10, PN16, PN20, JIS 5K-20K |
|---|---|---|---|
| Design Standards | API 609, BS5155, EN593, ASME B16.34 | Face-to-Face | API 609, ASME B16.10, BS EN 558, BS 5155 |
| Connections | ASME B16.5, EN 1092, BS 4504, ASME B16.47, JIS | Body Materials | ASTM A126, A351 CF8/CF8M, A216 WCB, Monel, Inconel |
| Seat Seal | EPDM, NBR, VITON | Stem Materials | A182 F304/F316, 17-4PH, XM-19, Inconel 625/718 |
| Operation | Gear Unit (Manual/Automated) | Testing Norms | API 598, API 6D (100% Hydraulic/Air Test) |
Reduces seat wear and friction during operation, extending the valve's service life and ensuring a bubble-tight seal.
Available in diverse materials including Hastelloy and Monel for extreme corrosion resistance in harsh environments.
Fully compliant with API, ASME, and BS standards for seamless integration into international projects.
Equipped with an anti-blow out stem design to prevent accidental detachment and ensure operator safety.
100% chemical analysis, mechanical tests, and DPT/RT inspection to guarantee zero-defect delivery.
Ideal for large-scale water treatment, oil refineries, and gas transmission pipelines due to wide size range.
100% chemical analysis and mechanical testing for every heat number of raw materials.
Advanced casting processes with DPT, MT, and UT testing to ensure structural integrity.
Strict 100% hydraulic shell and seal tests combined with low-pressure air testing.
Special material customization available to meet unique process medium requirements.
Adherence to API 6D and API 598 for inspection and approval of every valve unit.
Comprehensive 12-month service guarantee with free spares and maintenance manuals.
| Feature | Standard Butterfly Valve | Double Offset Rubber Seated |
|---|---|---|
| Seal Life | Moderate wear | Extended (Low friction) |
| Shut-off Tightness | Basic Sealing | Superior Bubble-tight |
| Maintenance Cycle | Frequent | Reduced (Low wear) |
| Operational Cost | Standard | Lower (Long-term) |
| Material Versatility | Limited | High (Alloys/Exotics) |
The double offset design ensures the disc separates from the seat more quickly during opening, significantly reducing friction and wear on the rubber seal, which extends the valve's operational life.
Depending on the temperature and chemical composition, VITON is typically recommended for higher temperatures and chemical resistance, while NBR is suitable for standard oil applications.
Yes, our Double Offset Butterfly Valves are designed and manufactured according to API 609, ensuring they meet global industry requirements for dimensions and performance.
We offer an extensive size range from 4 inches up to 144 inches, making them suitable for both small industrial lines and large-scale municipal water systems.
Every valve undergoes 100% hydraulic shell and seat tests, low-pressure air tests, and chemical analysis of raw materials to ensure absolute reliability.
Yes, we provide a wide array of high-performance materials including Monel K400/K500, Inconel 625/718, and Hastelloy H-276 to meet specific corrosion requirements.
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