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Help CenterReliable Butterfly Valve for Marine Desulfurization Tower Bypass and Recirculation Lines
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As a leading manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our specialized butterfly valve engineered for the demanding environments of marine desulfurization systems. Established in 2016, we have dedicated ourselves to producing industrial valves that meet the rigorous standards of global markets, from North America to Southeast Asia. Our butterfly valve for desulfurization tower bypass and recirculation lines is a testament to this commitment, designed to ensure uninterrupted operation, enhance system safety, and provide a cost-effective sealing solution for critical flue gas treatment processes. Trust in our expertise and proven export record to deliver the valve performance your marine applications require.
Our reliable butterfly valve is specifically designed to handle the unique challenges of marine scrubber systems, including exposure to corrosive flue gas constituents, variable temperatures, and the need for frequent operation in bypass and recirculation modes. The core design focuses on robust construction and optimal sealing to prevent leakage, which is paramount for environmental compliance and operational efficiency.
- Superior Sealing Performance: The valve features a precision-engineered disc and a resilient seat (available in EPDM, NBR, or PTFE) that ensures a bubble-tight seal in both directions, effectively isolating flow in bypass scenarios and controlling recirculation rates.
- Corrosion-Resistant Construction: Critical wetted parts, such as the disc and stem, are often made from or coated with stainless steel or other corrosion-resistant alloys to withstand the harsh, sulfur-laden environment of desulfurization systems.
- Robust and Compact Design: The wafer or lug-type body design provides a space-saving and lightweight solution without compromising on pressure integrity, making it ideal for the compact layouts of marine vessels.
- Versatile Actuation Options: To suit various levels of automation, the valve can be fitted with manual levers, gear operators, electric actuators, or pneumatic actuators, allowing for local or remote control as per the ship's system design.
- Low Torque Operation: The streamlined disc design minimizes fluid turbulence and operating torque, leading to easier actuation, reduced wear on the seat, and longer service life, even with frequent cycling.
- Easy Maintenance and Installation: The simple design allows for quick inline maintenance. The wafer-style valves can be installed between ANSI or DIN standard flanges without the need for nuts on the valve side, simplifying the installation process.
To provide a clear overview of the valve's capabilities, here are some key technical specifications:
| Parameter | Specification / Option |
| Body Material | Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel (CF8/CF8M) |
| Disc Material | Ductile Iron with Ni-plating or Stainless Steel, Epoxy Coated |
| Seat Material | EPDM, NBR, PTFE, Metal Seat (for high temp) |
| Stem Material | Stainless Steel (17-4PH or 316SS) |
| Size Range (Nominal Diameter) | DN50 (2") to DN1200 (48") |
| Pressure Rating | PN10, PN16, ANSI Class 150 |
| Connection Standard | ISO, ANSI, DIN, JIS Flange Standards |
| Operating Temperature | -20°C to +180°C (depending on seat material) |
| Operation | Manual (Lever/Gear), Electric Actuator, Pneumatic Actuator |
Choosing our butterfly valve for your marine desalination bypass and recirculation lines brings tangible benefits. It enhances system reliability by providing a dependable shut-off, crucial for maintenance and emergency procedures. The corrosion-resistant materials extend the valve's lifespan, reducing total cost of ownership. Its efficient flow control helps optimize the desulfurization process, potentially reducing reagent consumption. Furthermore, the ease of automation integrates seamlessly into modern ship control systems, improving operational safety and reducing manual labor.
Backed by our ISO 9001 certified manufacturing processes, Shanghai Zhibang Valve ensures every valve meets consistent quality standards. With an annual export value reaching up to US$1.5 Million and a presence in major global markets including North America, Europe, and Southeast Asia, our products have been trusted by numerous international clients. We ship efficiently from key ports like Shanghai, Guangzhou, and Hong Kong, ensuring timely delivery. For a valve solution that combines durability, performance, and value for your critical marine applications, contact us today to discuss your specific requirements and request a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: Is this butterfly valve suitable for handling seawater in recirculation loops?
A1: Yes, when configured with appropriate materials such as a stainless steel disc and stem along with an EPDM or PTFE seat, this valve is well-suited to handle seawater and other corrosive media commonly found in marine desulfurization system recirculation lines.
Q2: Can the valve be automated for remote operation from the ship's control room?
A2: Absolutely. The valve is designed to be compatible with various electric or pneumatic actuators. We can supply the valve as a complete package with an actuator, mounting kit, and necessary controls for seamless integration into your remote monitoring and control system.
Q3: What is the typical delivery lead time for an order?
A3: Lead time varies based on order quantity, size, and material specifications. For standard configurations, we generally aim for delivery within 4-8 weeks. Expedited production may be available upon request for urgent projects.
Q4: Do you provide technical support for installation and maintenance?
A4: Yes, we provide comprehensive technical documentation including installation manuals, dimensional drawings, and maintenance guides. Further technical support is available through our engineering team to assist with any specific queries during installation or operation.
Q5: How does the valve perform under high-temperature flue gas conditions in the bypass line?
A5: For high-temperature applications, we offer valves equipped with metal seats (such as stainless steel) and high-temperature resistant stem packing. It is crucial to specify the expected maximum operating temperature so we can recommend the most suitable material configuration.
Q6: Are the valves tested before shipment?
A6: Yes, each valve undergoes rigorous factory acceptance testing, which typically includes a shell test and a seat leakage test per relevant standards like API 598 or ISO 5208, to ensure it meets the specified performance criteria.
Q7: Can you customize the valve's flange facing or drilling standard?
A7: Yes, customization is possible. We can manufacture valves to match various international flange standards such as ANSI, DIN, JIS, or specific customer drawings. Please provide your detailed requirements during the inquiry stage.
Q8: What is your warranty policy?
A8: We offer a standard warranty against defects in materials and workmanship for a specified period from the date of shipment, subject to proper installation, storage, and use as per our guidelines. The exact warranty terms are provided with the commercial contract.
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