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Help CenterHydraulic Marine Wafer Butterfly Valve in 316 Stainless Steel, DN50-DN600
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As a leading manufacturer in fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance Hydraulic Marine Wafer Butterfly Valve, precision-engineered in 316 Stainless Steel for the most demanding maritime and offshore applications. Established in 2016, we have dedicated ourselves to producing valves that combine robust durability with precise control, a commitment reflected in our ISO9001 certified quality management system. This specific valve series, available in sizes from DN50 to DN600, is designed to offer reliable isolation and regulation in shipboard piping systems, ballast water management, and offshore platform services. We understand the critical need for corrosion resistance and long-term reliability in saline and harsh marine environments, which is why we utilize premium 316 stainless steel to ensure your operations remain uninterrupted and efficient.
Our Hydraulic Marine Butterfly Valve is engineered for superior performance. The wafer-style design allows for compact installation between ANSI or DIN flanges, saving valuable space and weight—a crucial factor in marine engineering. The 316 stainless steel construction provides exceptional resistance to pitting and crevice corrosion from chlorides, making it ideal for seawater, brine, and chemical handling. The valve features a fully lugged body for dead-end service capability, ensuring safety and versatility. The hydraulic actuator provides powerful, reliable torque for positive shut-off or precise flow modulation, even under high differential pressures.
Key Features and Technical Advantages:
- Optimal Material Selection: The use of 316 stainless steel for the body, disc, and stem offers a superior corrosion resistance profile compared to standard 304 or cast iron, directly extending the valve's service life in aggressive marine atmospheres.
- Robust Hydraulic Actuation: The integrated hydraulic actuator delivers high torque output, ensuring bubble-tight shut-off and reliable control. It is suitable for both on/off service and throttling applications, with options for fail-safe (spring-return) or double-acting configurations.
- Versatile Sealing Options: The valve is equipped with a resilient seat, typically EPDM for general seawater or PTFE for higher temperature or chemical service. This design ensures a tight seal with low operating torque and excellent wear resistance.
- Precision Engineering: The disc is precision-machined and dynamically balanced to minimize turbulence and pressure drop, contributing to energy efficiency in the overall piping system.
- Ease of Maintenance: The stem is sealed with multiple O-rings and bushings, and the seat is replaceable, allowing for in-line maintenance without removing the valve body from the pipeline, reducing downtime and operational costs.
Technical Specifications Table:
| Parameter | Specification |
| Size Range | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600 |
| Pressure Rating | PN10, PN16, PN25 (150psi, 300psi models available) |
| Body & Disc Material | ASTM A351 CF8M / 316 Stainless Steel |
| Stem Material | 316 Stainless Steel (17-4PH optional for high-stress) |
| Seat Material | EPDM (Standard), PTFE, Viton® (Optional) |
| Max Operating Temperature | Up to 120°C with EPDM seat; Up to 200°C with PTFE seat |
| Flow Characteristic | Approximately Equal Percentage |
| Leakage Class | Bubble-tight (Zero Leakage achievable with soft seat) |
Benefits for Your Operations:
- Enhanced System Reliability: The corrosion-resistant 316 SS construction drastically reduces the risk of valve failure, preventing costly unplanned shutdowns and maintenance in critical marine systems like cooling, firefighting, and fuel lines.
- Improved Operational Safety: The hydraulic actuator provides fail-safe operation, automatically moving the valve to a predetermined safe position (open or closed) in case of power loss, protecting personnel and equipment.
- Reduced Lifecycle Cost: The durability of materials and design minimizes replacement frequency. The ease of maintenance further lowers the total cost of ownership over the valve's extended lifespan.
- Design Flexibility: Available in a comprehensive size range (DN50-DN600) and with various seat and accessory options, this valve can be customized to fit the specific pressure, temperature, and media requirements of your project.
Backed by Shanghai Zhibang Valve's proven track record of exporting high-quality valves to global markets including North America, Europe, Southeast Asia, and Africa, with an annual export value ranging between US$1 Million and US$1.5 Million, you can be confident in the reliability and international acceptance of our products. Our valves are shipped from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring efficient logistics to your project site anywhere in the world. This Hydraulic Marine Wafer Butterfly Valve embodies our commitment to delivering solutions that meet the stringent demands of the marine industry. For a valve that offers uncompromising corrosion resistance, reliable actuation, and long-term value, contact us today to discuss your specifications or request a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: What are the main advantages of using a hydraulic actuator over a manual or electric one on this valve?
A1: Hydraulic actuators provide significantly higher torque density in a compact package, making them ideal for larger valve sizes (like DN600) or high-pressure applications common in marine systems. They are also highly reliable, explosion-proof by nature, and offer smooth, precise control for throttling duties.
Q2: Is this valve suitable for seawater service?
A2: Yes, absolutely. The 316 stainless steel material is specifically chosen for its excellent resistance to chloride-induced corrosion, which is prevalent in seawater. Combined with an appropriate elastomer seat like EPDM, it is a standard choice for seawater cooling, ballast, and bilge systems.
Q3: Can this wafer-style valve be used for dead-end service?
A3: Our marine butterfly valve features a fully lugged wafer design. This means it has threaded inserts or through-holes on both sides, allowing it to be bolted directly to a flange without needing downstream flanges to hold it in place, making it suitable for dead-end service.
Q4: What is the typical delivery time for an order of DN300 valves?
A4: Delivery time depends on the order quantity and specific configuration. For standard configurations, we typically maintain stock for common sizes. For larger or customized orders, our production lead time is efficient, and we can provide a precise schedule upon receipt of your official inquiry.
Q5: Do you provide the hydraulic power unit (HPU) with the valve?
A5: The valve package typically includes the valve body, disc, seat, and the hydraulic actuator. The hydraulic power unit (HPU) is a separate system that generates and controls the hydraulic fluid pressure. We can supply compatible HPUs as part of a complete system package upon request.
Q6: What certifications do your valves hold?
A6: Our manufacturing process is certified under the ISO9001 Quality Management System, ensuring consistent quality control. The valves are manufactured to international standards such as ISO 5752 and API 609. Specific product certifications (like ABS, DNV, etc.) for marine use can be discussed and arranged based on project requirements.
Q7: What is the difference between PN10, PN16, and PN25 pressure ratings?
A7: These are nominal pressure ratings. PN10 is suitable for 10 bar (~145 psi) service, PN16 for 16 bar (~232 psi), and PN25 for 25 bar (~363 psi). The appropriate rating should be selected based on the maximum working pressure in your specific pipeline system.
Q8: Are spare parts like seals and seats readily available?
A8: Yes. As the manufacturer, we maintain an inventory of critical spare parts. We recommend purchasing a maintenance kit with your initial order to ensure you have essential seals and gaskets on hand for future servicing, minimizing downtime.
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