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Marine Double Eccentric Butterfly Valve PN16 Cast Steel Body Gearbox Operated
Product Spotlights
Designed for harsh marine duty, this PN16-rated valve features a durable cast steel body and a double eccentric design that minimizes seat wear for long life and bubble-tight shut-off. The integral gearbox ensures easy manual operation even for large sizes. Ideal for seawater, ballast, and cooling systems, it offers reliable performance backed by ISO9001 manufacturing standards and global export experience.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine & Offshore Systems
Body Material:
Cast Steel
Pressure Rating:
PN16
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine & Offshore Systems
Body Material
Cast Steel
Pressure Rating
PN16
Operation Type
Gearbox Operated
Design Type
Double Eccentric
Seat Material
Optional (e.g., Metal, PTFE)
Connection Type
Wafer or Lug (Optional)
Temperature Range
Available upon request
Size Range
Customizable
As a specialized manufacturer with a strong foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine Double Eccentric Butterfly Valve PN16. Engineered for demanding marine and offshore applications, this valve combines robust cast steel construction with a reliable gearbox operation to deliver superior flow control, exceptional sealing performance, and long-term durability in harsh saltwater environments. Our commitment to ISO9001-certified quality management ensures every valve meets the high standards required for global maritime operations.
This valve is designed to address the specific challenges of shipboard piping systems, ballast systems, cooling water lines, and other critical marine services. Its double eccentric (double offset) design significantly reduces seat wear and provides bubble-tight shut-off, making it a dependable choice for engineers and procurement specialists seeking a balance of performance, longevity, and value.
Core Product Features & Technical Advantages:
- Double Eccentric Design: The disc rotation axis is offset from both the seat centerline and the valve centerline. This design minimizes friction during operation, allowing for smooth 90-degree opening/closing and dramatically extending the service life of the seat seal by reducing abrasive contact.
- Cast Steel Body (PN16): Manufactured from high-grade cast steel, the valve body provides excellent mechanical strength and corrosion resistance, suitable for a wide range of media including seawater, fresh water, oils, and gases at pressures up to 16 bar.
- Gearbox Operation: The integrated gear operator offers significant mechanical advantage, enabling easy manual control of larger valve sizes even under high differential pressures. This feature enhances operational safety and reduces the effort required by personnel.
- Bubble-Tight Shut-off: The precision-engineered disc and seat interface ensure reliable, leak-proof sealing when fully closed, which is critical for system isolation, safety, and environmental protection on vessels.
- Low Maintenance & High Durability: The robust construction and wear-minimizing design translate to reduced maintenance intervals and lower total cost of ownership over the valve's lifespan.
- Versatile Mounting Options: Typically available in wafer or lug style body designs to suit different piping connection requirements and space constraints.
Detailed Technical Specifications:
| Design Standard | API 609, ISO 5752, or equivalent marine standards |
| Pressure Rating | PN16 (16 bar) |
| Body Material | Cast Steel (WCB, LCB, etc., customizable) |
| Disc Material | Stainless Steel (CF8M, 316SS) or Cast Steel with coating |
| Seat Material | Metal (Stainless Steel) or Resilient (PTFE, EPDM) - Optional |
| Stem Material | Stainless Steel (416, 304, 316) for corrosion resistance |
| Operation | Manual Gearbox (Standard), can be fitted with actuator (Optional) |
| Temperature Range | Depends on seat material; typically -29°C to +200°C for metal seats |
| End Connection | Wafer or Lug (RF face finish standard) |
| Size Range | Commonly from DN50 (2") to DN600 (24"), other sizes available |
Benefits for Your Marine Projects:
- Enhanced System Reliability: Provides dependable isolation and control, minimizing downtime and operational risks.
- Corrosion Resistance: Material selections are tailored to withstand aggressive marine atmospheres and media.
- Operational Efficiency: The gearbox allows for smooth, low-torque operation, saving time and labor during routine valve cycling.
- Long Service Life: The double eccentric design is proven to offer extended service intervals compared to concentric valves.
- Global Compliance: Designed and manufactured to meet international standards commonly referenced in marine projects.
Frequently Asked Questions (FAQ):
-
Q: What is the main advantage of a double eccentric design over a standard butterfly valve?
A: The double offset design drastically reduces wear on the seat because the disc lifts away from the seat immediately upon opening. This results in lower operating torque, significantly longer seat life, and more reliable sealing performance, especially for frequent operation cycles. -
Q: Is this valve suitable for seawater applications?
A: Yes, it is specifically designed for marine environments. We recommend material combinations like cast steel body with stainless steel internals (disc, stem) and appropriate coatings to enhance corrosion resistance against seawater. Specific material grades can be selected based on your service conditions. -
Q: Can this valve be automated?
A: Absolutely. The manual gearbox operator can be easily replaced or supplemented with a pneumatic, hydraulic, or electric actuator. The valve design includes a standardized mounting interface to accommodate various actuators upon request. -
Q: What types of end connections are available?
A: The valve is primarily offered in wafer or lug style. Wafer style is sandwiched between pipe flanges, while lug style has threaded inserts allowing it to be bolted directly to each flange, providing added strength for end-of-line applications. -
Q: What is the delivery lead time for custom sizes or materials?
A: As a manufacturer, we maintain flexibility. Standard sizes typically have shorter lead times. For custom requirements, the lead time will be confirmed based on the specific order details and current production schedule. Our efficient supply chain helps manage timelines effectively. -
Q: Do you provide documentation and certifications with the valves?
A> Yes. As an ISO9001-certified manufacturer, we provide essential documentation such as material test certificates (MTC), pressure test reports, and a manual. Specific third-party certifications can be arranged if required by the project. -
Q: How does the gearbox benefit operation?
A> The gearbox provides a high gear ratio, multiplying the input force from the operator. This allows a single person to open or close larger diameter valves against significant line pressure with relative ease, improving safety and reducing the need for large wrench tools. -
Q: What after-sales support do you offer?
A> We provide technical support for installation and operation. Spare parts like seals, gaskets, and even complete gearbox units are available. Our experience serving diverse global markets ensures we understand the importance of reliable support.
Shanghai Zhibang Valve backs its products with the credibility of an established manufacturer, exporting to key regions across the globe including North America, Europe, Southeast Asia, and the Middle East. Our annual export volume reflects consistent trust from international clients in demanding sectors. Sourced directly from our ISO9001-managed facility, this Marine Double Eccentric Butterfly Valve represents a combination of proven engineering, material integrity, and manufacturing precision. We invite you to experience the reliability and value this valve brings to your marine systems. Contact us today for detailed quotations, technical data sheets, or to discuss your specific project requirements for a tailored solution.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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