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Help CenterAcid-Resistant Marine Butterfly Valve for Flue Gas Desulfurization, PTFE Lined, Mill Test Report Provided
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a professional manufacturer specializing in high-performance industrial valves for demanding applications. Our Acid-Resistant Marine Butterfly Valve for Flue Gas Desulfurization (FGD) is engineered to withstand the corrosive environments prevalent in power plants and marine scrubber systems. We combine robust construction with advanced PTFE lining technology to deliver a valve solution that ensures long-term reliability, minimal maintenance, and optimal flow control in aggressive chemical service. With an annual export value of US$1-1.5 million and a presence in major global markets, we are committed to providing valves that meet the stringent requirements of international projects.
This PTFE-lined butterfly valve is specifically designed to handle the acidic slurries and gases found in Flue Gas Desulfurization units, offering superior corrosion resistance and sealing performance.
- Superior Corrosion Barrier: The full PTFE (Polytetrafluoroethylene) lining acts as an inert barrier, protecting the valve body from highly corrosive media such as sulfuric acid, chlorides, and other aggressive chemicals common in FGD processes.
- Robust Structural Design: The valve body is constructed from durable carbon steel, providing the necessary strength for pipeline integrity, while the disc is typically made from stainless steel or coated with PTFE for added chemical resistance.
- Excellent Sealing Performance: The PTFE seat ensures bubble-tight shut-off, minimizing leakage and fugitive emissions, which is critical for environmental compliance and operational safety.
- Low Maintenance & Long Service Life: The non-stick properties of PTFE prevent scaling and buildup, reducing the frequency of maintenance interventions and extending the valve's operational lifespan significantly.
- Versatile Actuation Options: Available with manual lever, gearbox, electric actuator, or pneumatic actuator configurations, allowing for seamless integration into automated control systems.
- Broad Size and Pressure Compatibility: Manufactured in a wide range of sizes to fit various pipeline dimensions and designed to handle standard pressure ratings for FGD applications.
Detailed technical specifications for our standard FGD butterfly valve are provided in the table below. Custom configurations are available upon request.
| Parameter | Specification |
|---|---|
| Valve Type | PTFE Lined Wafer/Lug Butterfly Valve |
| Size Range | DN50 (2") to DN1200 (48") |
| Pressure Rating | PN10/16, ANSI 150 |
| Body Material | Carbon Steel (WCB) with PTFE Lining |
| Disc Material | Stainless Steel (CF8/CF8M) or PTFE Coated |
| Stem Material | Stainless Steel (17-4PH or equivalent) |
| Seat Material | Virgin PTFE |
| Lining Thickness | Customizable (typically 3-5mm) |
| Temperature Range | -20°C to 200°C (-4°F to 392°F) |
| Operation | Lever, Worm Gear, Electric, Pneumatic |
| End Connection | Wafer, Lug, Double Flange (RF, FF) |
| Face-to-Face | Per ISO 5752 / API 609 Standards |
The primary advantage of choosing our valve lies in its proven durability in harsh conditions. The PTFE lining is resistant to nearly all industrial chemicals, ensuring the valve interior remains unaffected by the corrosive slurry. This translates to:
- Reduced Total Cost of Ownership: Longer intervals between replacements and lower maintenance costs.
- Enhanced System Reliability: Consistent performance prevents unplanned shutdowns in critical FGD operations.
- Compliance Assurance: Helps plants meet strict environmental regulations regarding emissions and leakage.
- Flexibility: Suitable for both onshore power plants and offshore marine scrubber systems, demonstrating its "marine" grade robustness.
Trust is paramount in the valve industry. Shanghai Zhibang reinforces this trust by providing a Mill Test Report (MTR) with each valve, documenting the chemical composition and mechanical properties of the metallic materials used, ensuring traceability and quality verification. Our manufacturing processes are certified under ISO9001, guaranteeing consistent quality control. With our products successfully supplied to markets across North America, South America, Europe, Asia, Africa, and Oceania, we have built a reputation for reliability. Our strategic location in Shanghai and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing) ensure efficient logistics. For your next FGD or severe service application, choose a valve backed by documented quality and global experience. Contact us today for a quotation or to discuss your specific project requirements.
Frequently Asked Questions (FAQ)
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Q: What makes this valve suitable for Flue Gas Desulfurization (FGD) applications?
A: FGD processes involve highly corrosive acidic slurries and gases. This valve features a full PTFE lining, which is chemically inert and provides exceptional resistance to sulfuric acid and other aggressive media, ensuring long-term integrity and reliable operation in these harsh environments. -
Q: What is included in the Mill Test Report (MTR), and why is it important?
A: The MTR is a certified document from the material mill that provides detailed data on the chemical composition, mechanical properties (like tensile strength, yield strength), and heat treatment of the metallic components (body, disc, stem). It is crucial for quality assurance, material traceability, and compliance with project specifications. -
Q: Can this valve be used in seawater or marine environments?
A: Yes, the "Marine" designation indicates suitability for such applications. The PTFE lining offers excellent resistance to chlorides present in seawater, while the robust construction resists the corrosive marine atmosphere, making it ideal for offshore scrubber systems and shipboard use. -
Q: What actuation methods are available?
A: We offer a range of actuation options to suit different control needs: manual lever for simple on/off, gear operator for higher torque, and electric or pneumatic actuators for remote or automated process control. The specific type can be selected based on your system design. -
Q: What is the temperature limitation of the PTFE lining?
A: The standard PTFE lining performs reliably within a temperature range of -20°C to 200°C. For applications outside this range, please consult our engineering team as alternative materials or designs may be available. -
Q: Are custom sizes or pressure ratings available?
A: Absolutely. While we stock standard sizes from DN50 to DN1200, we have the manufacturing capability to produce valves in non-standard dimensions or for higher pressure classes (e.g., ANSI 300) based on customer requirements. -
Q: How does the wafer design differ from the lug design?
A: A wafer-style valve is installed between two pipeline flanges using longer bolts. A lug-style valve has threaded inserts (lugs) on both sides, allowing it to be installed using bolts only on one side, which can be advantageous for end-of-line service or easier maintenance. The choice depends on your piping layout. -
Q: What is your lead time for standard valves?
A: Lead times vary based on size, actuation type, and order quantity. Generally, for standard configurations, we aim for a competitive lead time. Please contact our sales team with your specific needs for an accurate delivery schedule.
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