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Help CenterHigh-Performance Duplex Stainless Steel Butterfly Valve for Offshore Platforms, API 609, Wafer/Lug Type
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As a specialized manufacturer with a strong export presence, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our high-performance Duplex Stainless Steel Butterfly Valve, engineered specifically for the demanding environments of offshore platforms. Since our establishment in 2016, we have focused on delivering robust and reliable flow control solutions. This valve is a testament to our commitment, designed to meet API 609 standards and built to withstand the corrosive, high-pressure challenges of marine and offshore applications, ensuring long-term operational integrity and safety for your critical infrastructure.
Our valve is constructed from premium Duplex Stainless Steel, renowned for its exceptional combination of high strength and superior corrosion resistance, particularly against chloride-induced stress corrosion cracking—a common threat in offshore seawater environments. The valve is available in both wafer and lug body types, providing flexible installation options to suit various pipeline configurations. Key features include:
- Superior Material Performance: Duplex stainless steel offers roughly twice the yield strength of standard austenitic grades (304/316), significantly enhancing the valve's durability and resistance to pitting and crevice corrosion.
- API 609 Compliance: Manufactured in strict accordance with API 609, "Butterfly Valves: Double Flange, Lug- and Wafer-Type," ensuring standardized dimensions, pressure ratings, and performance reliability recognized globally in the oil & gas sector.
- Advanced Disc and Seat Design: The high-performance disc design ensures a tight, bubble-tight shut-off with low operating torque. The seat, typically made from PTFE or other resilient elastomers, provides excellent sealing and chemical resistance.
- Versatile Actuation Options: The valve can be fitted with manual levers, gear operators, or automated actuators (pneumatic/electric), allowing for integration into both manual and fully automated control systems.
- Optimized for Offshore Use: The design considers factors like compact space, weight savings, and ease of maintenance, which are crucial for offshore platform installations.
Below is a summary of typical technical specifications:
| Parameter | Specification |
|---|---|
| Body Material | Duplex Stainless Steel (UNS S31803/S32205) |
| Disc Material | Duplex Stainless Steel or CF8M (316 SS) |
| Seat Material | PTFE, EPDM, Viton (Customizable) |
| Design Standard | API 609 |
| Pressure Rating | ANSI Class 150, Class 300; PN16, PN25, PN40 |
| Temperature Range | Standard: -20°C to +150°C (with PTFE) Extended ranges available upon request |
| Connection | Wafer Type (between flanges) or Lug Type (threaded holes for bolting) |
| Size Range (Nominal) | DN50 (2") to DN600 (24") |
| Operation | Manual (Lever/Gear), Pneumatic Actuator, Electric Actuator |
| Face-to-Face | Per API 609 / ISO 5752 Series 20 |
The advantages of choosing our valve translate directly into client benefits: reduced maintenance downtime due to corrosion resistance, enhanced safety through reliable sealing, lower lifecycle costs from extended service life, and improved system efficiency with low-pressure drop across the disc. For engineers and procurement managers, this means a dependable component that contributes to overall project success and operational cost savings.
Backed by our ISO9001 certified quality management system, Shanghai Zhibang guarantees consistent manufacturing excellence. With an annual export value between US$1-1.5 Million, our products have gained trust across diverse markets including North America, South America, Eastern Europe, Southeast Asia, Africa, and the Middle East. We ship efficiently from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. This valve is not just a product; it's a reliable partner engineered for the harsh realities of offshore service. Contact us today to discuss your specific requirements and experience the Zhibang difference in quality and performance.
Frequently Asked Questions (FAQ):
Q1: What are the main differences between the Wafer and Lug type versions of this valve?
A: The wafer type is designed to be installed between two pipeline flanges using long bolts that span the entire assembly, making it lighter and more economical. The lug type has threaded inserts (lugs) on both sides, allowing it to be bolted directly to each flange independently. This makes the lug type suitable for end-of-line service or where one side may need to be disconnected.
Q2: Why is Duplex Stainless Steel particularly suitable for offshore platform valves?
A: Offshore environments expose equipment to highly corrosive seawater, chlorides, and often high pressures. Duplex stainless steel offers superior resistance to chloride stress corrosion cracking (SCC) and pitting compared to standard 316 stainless steel, while also providing higher mechanical strength, leading to a longer, more reliable service life.
Q3: Does compliance with API 609 mean the valve is approved for all oil and gas applications?
A: API 609 is a widely recognized industry standard specifying requirements for butterfly valves. Compliance indicates that the valve meets specific design, material, and testing criteria. However, final approval for any specific application always depends on the end-user's or project's engineering standards and the specific service conditions (media, pressure, temperature).
Q4: Can this valve be automated, and what actuator options are available?
A: Yes, this valve is designed for easy automation. We offer a range of compatible pneumatic (double-acting or spring-return) and electric actuators. The specific choice depends on your available power source (air or electricity), required torque, fail-safe mode needs, and control system interface.
Q5: What is the typical lead time for an order of these valves?
A: Lead time varies based on order quantity, size, actuation requirements, and current production schedule. Standard configurations often have shorter lead times. We recommend contacting our sales team with your detailed specifications for an accurate delivery estimate.
Q6: Are special coatings or surface treatments available for enhanced corrosion protection?
A: While the duplex stainless steel itself provides excellent corrosion resistance, additional protective coatings or passivation treatments can be applied upon request for particularly aggressive environments or to meet specific project specifications.
Q7: What kind of testing is performed on these valves before shipment?
A: Following API 609 and our internal ISO9001 procedures, valves typically undergo shell tests (body pressure test), seat leakage tests (both low-pressure air and high-pressure hydrostatic), and operational tests to ensure smooth 90-degree rotation. Detailed test reports can be provided.
Q8: Do you provide technical support for sizing and selection?
A: Absolutely. Our engineering team can assist you with valve sizing based on your flow media (seawater, hydrocarbons, chemicals), pressure drop requirements, pipeline size, and operating conditions to ensure optimal performance in your system.
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