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Help CenterAPI 609 Double Eccentric Butterfly Valve With Cast Steel Body and Stainless Steel Disc
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As a professional manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance API 609 Double Eccentric Butterfly Valve. Engineered for demanding industrial applications, this valve combines a robust cast steel body with a corrosion-resistant stainless steel disc to deliver exceptional durability and reliable shut-off in critical service. Since our establishment in 2016, we have focused on producing valves that meet stringent international standards, ensuring our products perform consistently in markets across North America, Europe, Asia, and beyond. Our valve is designed to solve common issues like seat wear and leakage, offering a superior sealing solution for high-pressure and high-temperature systems.
The core of this valve's performance lies in its double eccentric (double-offset) design. This advanced mechanism significantly reduces friction and wear between the disc and seat during operation, leading to a longer service life and lower maintenance costs. Below are the key technical specifications and advantages detailed for your evaluation.
- Superior Sealing Performance: The offset stem design ensures minimal contact between the disc and seat until the final moments of closure, creating a tight, bubble-tight seal even after thousands of cycles.
- Reduced Torque Requirement: Lower operating torque translates to smaller, more cost-effective actuators, reducing overall system costs.
- Wide Material Compatibility: The combination of cast steel body and stainless steel disc offers excellent resistance to a variety of media, including water, oil, gas, steam, and corrosive chemicals.
- Versatile Configurations: Available in wafer, lug, and double flanged end types to suit different piping system requirements.
- Extended Temperature Range: Engineered to perform reliably from cryogenic temperatures up to high-temperature applications, thanks to robust material selection and design.
The following table outlines some of the standard configurations available. Customizations are available upon request to meet specific project needs.
| Parameter | Specification / Option |
| Design & Testing Standard | API 609, API 598 |
| Size Range (Nominal) | 2\" - 48\" (DN50 - DN1200) |
| Pressure Class (ANSI) | Class 150, 300, 600 |
| Seat Material Options | PTFE, Reinforced PTFE, Metal (Stainless Steel, etc.) |
| Stem Material | Stainless Steel (standard), other alloys optional |
| Operation Method | Lever, Gear Operator, Electric Actuator, Pneumatic Actuator |
| Face-to-Face Dimensions | Complies with API 609 / ASME B16.10 |
Choosing our API 609 valve provides tangible benefits for your operations:
- Enhanced System Reliability: Minimizes unplanned downtime due to valve failure, ensuring continuous process flow.
- Cost-Effective Lifecycle: The durable construction and reduced wear lead to lower total cost of ownership through fewer replacements and maintenance interventions.
- Compliance Assurance: Manufactured in accordance with API 609, providing confidence for use in regulated industries like oil & gas and petrochemicals.
- Global Supply Chain Support: With annual exports valued between US$1 Million and US$1.5 Million and major shipment ports including Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to your project site anywhere in the world.
Our commitment to quality is backed by our ISO9001 certification, which governs every step of our manufacturing process from material sourcing to final testing. This valve is a proven solution trusted by clients across diverse global markets, from North and South America to Europe, Southeast Asia, Africa, and Oceania. We invite you to experience the reliability and performance that have made Shanghai Zhibang Valve a preferred partner for industrial valve needs. Contact us today to discuss your specific requirements or to request a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of a double eccentric design over a standard butterfly valve?
A1: The double eccentric (or double-offset) design significantly reduces wear on the seat and disc by minimizing friction during opening and closing. This results in a longer service life, a more reliable seal, and lower operating torque compared to concentric butterfly valves.
Q2: Is this valve suitable for both on/off and throttling service?
A2: While primarily designed for reliable shut-off (on/off) applications, the double eccentric design offers improved flow characteristics and can be used for moderate throttling duties. For precise control applications, we recommend consulting our engineering team for specific advice.
Q3: Can you provide valves with different end connections?
A3: Yes. We offer this API 609 valve with wafer, lug, and double flanged end connections to match your piping system design. The specific type can be selected based on your installation and maintenance requirements.
Q4: What types of actuators are compatible with this valve?
A4: The valve is designed to be compatible with a wide range of actuators. We can supply it with manual lever or gear operators, as well as integrate it with electric or pneumatic actuators. The choice depends on your automation needs and available power sources.
Q5: What is the typical delivery lead time for an order?
A5: Lead times vary based on order quantity, size, pressure class, and customization. For standard configurations, we typically maintain stock for common sizes. For large or custom orders, our team will provide a clear production schedule upon receiving your inquiry.
Q6: Do you provide full testing and documentation with the valves?
A6: Absolutely. Each valve undergoes rigorous testing, including shell tests and seat leakage tests as per API 598 standards. We provide a comprehensive test report and certification package, including material certificates, to ensure full traceability and compliance.
Q7: How does the cast steel body perform in corrosive environments?
A7: The cast steel body provides high strength and good general corrosion resistance. For highly corrosive services, additional protective coatings or alternative body materials (like stainless steel) can be explored as customizable options.
Q8: What after-sales support do you offer?
A8: We provide technical support for installation, operation, and maintenance. Spare parts such as seats, seals, and stems are available. Our global market presence allows us to offer responsive support through our network.
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