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Help CenterManual Marine Butterfly Valve With 316 Stainless Steel Lever Handle, DN50-DN300, PN10
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As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our robust Manual Marine Butterfly Valve. Engineered specifically for demanding marine and offshore applications, this valve combines the superior corrosion resistance of 316 stainless steel with a reliable, simple manual operation. Our design prioritizes longevity and minimal maintenance in harsh, salt-laden environments, providing a cost-effective and dependable flow control solution for shipbuilders, marine engineers, and offshore operators worldwide.
This valve is built to perform under pressure. The core construction utilizes 316 stainless steel for both the disc and the sturdy lever handle, offering exceptional resistance to pitting and crevice corrosion from seawater and marine atmospheres. The centric design with a resilient seat ensures a tight seal and smooth 90-degree operation for quick on/off service. We offer a comprehensive size range from DN50 to DN300, making it suitable for various piping systems onboard vessels, from ballast and cooling water lines to general service applications.
Key Technical Specifications & Advantages:
- Superior Material: The use of 316 stainless steel, with its added molybdenum content, provides a significant advantage over standard 304 stainless steel in chloride environments, drastically reducing the risk of failure due to corrosion.
- Reliable Sealing: The valve features a resilient seat (EPDM standard, PTFE optional) that ensures bubble-tight shut-off. The seat is replaceable in many models, extending the valve's service life and reducing long-term costs.
- Robust Operation: The simple yet robust lever handle design allows for quick visual indication of valve position (open or closed) and easy manual operation without the need for complex gearboxes.
- Versatile Installation: Available in wafer or lug body styles. Wafer style is compact and lightweight, ideal for space-constrained areas, while the lug style allows for dead-end service and easier pipe system isolation.
- Designed for Efficiency: The streamlined disc design minimizes pressure drop across the valve, promoting energy efficiency in fluid transfer systems.
Below is a summary of standard configurations:
| Parameter | Specification |
| Body & Disc Material | 316 Stainless Steel (CF8M) |
| Size Range (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300 |
| Pressure Rating (PN) | 10 |
| Seat Material (Standard) | EPDM |
| Seat Material (Optional) | PTFE, NBR, Viton |
| Stem Material | 316 Stainless Steel |
| Handle Type | Lever Locking Handle (316 SS) |
| Temperature Range (with EPDM seat) | -20°C to 120°C |
| Connection Standard | Face-to-face per ISO 5752 |
Benefits for Your Business: Choosing our manual marine butterfly valve translates into tangible operational benefits. You gain a component known for its durability in corrosive settings, leading to fewer replacements and lower lifecycle costs. The simple manual operation reduces training needs and eliminates reliance on external power sources, enhancing reliability. Furthermore, our standardized design and wide size availability ensure easy integration into both new builds and retrofit projects, streamlining your procurement and installation processes.
With over seven years of manufacturing expertise since our establishment in 2016 and an annual export value reaching up to US$1.5 million, Shanghai Zhibang Valve has built a solid reputation for quality and reliability. Our products reach key markets across North and South America, Europe, Asia, Africa, and Oceania, supported by efficient logistics from major ports like Shanghai and Hong Kong. This global footprint is a testament to the trust placed in our valves. When you select this manual marine butterfly valve, you are not just buying a product; you are investing in a solution backed by professional manufacturing standards, proven performance in diverse marine conditions, and a commitment to supporting your project's success. Contact us today to discuss your specific requirements or to request a quotation.
Frequently Asked Questions (FAQ):
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Q: What is the main advantage of using 316 stainless steel instead of 304 for this marine valve?
A: 316 stainless steel contains molybdenum, which significantly enhances its resistance to corrosion from chlorides, such as those present in seawater and marine atmospheres. This makes it a more durable and reliable choice for long-term marine service compared to 304 stainless steel. -
Q: Can this valve be used for throttling flow control?
A: While butterfly valves can be used for moderate throttling, this manual lever-operated model is primarily designed for reliable on/off (isolation) service. For precise flow regulation, a gear-operated or actuated butterfly valve is recommended. -
Q: Is the seat replaceable, and what are the options?
A: Yes, in most standard designs, the resilient seat is replaceable. The standard seat material is EPDM, suitable for a wide range of water and mild chemical services. Alternatives like PTFE (for wider chemical compatibility) or NBR are available upon request. -
Q: What does PN10 pressure rating mean?
A: PN10 indicates a nominal pressure rating of 10 bar at room temperature (approximately 145 psi). This means the valve is designed to safely contain pressures up to this level in its specified service conditions. -
Q: What is the difference between wafer and lug type body styles?
A: A wafer-style valve is sandwiched between two pipe flanges using long bolts. A lug-style valve has threaded inserts (lugs) on the valve body, allowing it to be bolted directly to each flange, which permits the downstream pipe to be removed independently. The lug style is preferred for end-of-line service. -
Q: Do you provide certifications or test reports with the valves?
A: As an ISO9001 certified manufacturer, we maintain strict quality control. Standard material certificates and factory test reports (such as shell test) can be provided upon request to support your project documentation needs. -
Q: What is the typical delivery lead time for an order?
A: Lead times vary based on order quantity, specific configurations, and current production schedule. For standard DN50-DN300 valves in popular materials, we often have stock or short production cycles. Please inquire with your specific requirements for an accurate timeline. -
Q: Are custom modifications, like different handle lengths or locking devices, possible?
A: Yes, we offer a degree of customization. Modifications such as extended spindles, different handle types (e.g., T-handle), or locking devices can often be accommodated. Please contact our sales team to discuss your customization needs.
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