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As a professional manufacturer of industrial valves since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-reliability fluid control solutions for demanding environments. Our Marine Butterfly Valves with Full Traceability and Documentation are engineered specifically to meet the rigorous standards of the global maritime industry. We understand that on-board systems require components that offer uncompromising performance, durability, and complete accountability from raw material to final installation. With an annual export value exceeding US$1 million, our valves are trusted by shipyards and vessel operators across North America, Southeast Asia, Europe, and beyond, ensuring smooth and safe operations in critical marine applications.
This product line represents our commitment to quality and transparency. Every valve is manufactured under our ISO9001 certified quality management system, guaranteeing consistent excellence. The core value of these valves lies in their robust construction, reliable sealing, and the comprehensive documentation package that provides full lifecycle traceability—a crucial factor for maintenance, safety audits, and regulatory compliance in the marine sector.
We will now detail the key features, technical specifications, and tangible benefits that make our Marine Butterfly Valve an intelligent choice for your maritime projects.
Product Features and Technical Advantages
- Superior Corrosion Resistance: Manufactured from materials like ductile iron with epoxy coating, cast steel, or stainless steel (CF8/CF8M), these valves are designed to withstand prolonged exposure to seawater, salt spray, and harsh marine atmospheres, ensuring a long service life.
- Reliable Bubble-Tight Shut-off: Features a precision-machined disc and a resilient seat (available in EPDM, NBR, PTFE, or Viton) that ensures a bubble-tight seal, critical for controlling ballast, cooling, and general service lines.
- Full Material and Process Traceability: Each valve is supplied with complete documentation, including material test certificates (MTC), heat number traceability, pressure test reports, and certification of conformity. This provides peace of mind and simplifies compliance with international maritime regulations.
- Versatile Actuation Options: Available with manual lever, gearbox, electric actuator, or pneumatic actuator configurations, allowing for seamless integration into both manual and automated shipboard control systems.
- Robust and Compact Design: The wafer or lug-type design offers a space-saving and lightweight solution without compromising on pressure integrity, making installation in tight engine rooms and piping spaces straightforward.
- Low Maintenance and Easy Operation: The simple design with minimal moving parts reduces the need for frequent maintenance. The stem is sealed effectively to prevent leakage, and the disc offers low torque operation for easy handling.
Technical Specifications
| Parameter | Specification |
| Size Range | DN50 to DN1200 (2" to 48") |
| Pressure Rating | PN10, PN16, ANSI 150 |
| Body Material | Ductile Iron, Cast Steel (WCB), Stainless Steel (304/316) |
| Disc Material | Ductile Iron / Stainless Steel, Epoxy Coated or Nylon Coated |
| Seat Material | EPDM, NBR, PTFE, VITON (Standard: EPDM for water) |
| Stem Material | Stainless Steel (420/304/316) |
| Operation Temperature | -10°C to +120°C (depending on seat material) |
| End Connection | Wafer, Lug, Double Flange |
| Standards | ISO, DIN, JIS, GB, or as per customer request |
Benefits for Your Operations
- Enhanced Safety and Compliance: Full documentation supports vessel safety certifications and port state control inspections, reducing operational downtime and risks.
- Reduced Total Cost of Ownership: Durable construction and corrosion-resistant materials minimize replacement frequency and maintenance costs over the valve's lifespan.
- Operational Efficiency: Reliable performance ensures consistent flow control in critical systems like ballast management, firefighting, and cooling, contributing to overall vessel efficiency.
- Supply Chain Confidence: Sourcing from an ISO9001 certified manufacturer with a proven export track record to major global markets ensures product quality and reliable supply.
- Flexibility: A wide range of sizes, materials, and actuation methods allows for customization to fit specific project requirements and existing shipboard piping.
Frequently Asked Questions (FAQ)
Q1: What does "full traceability" mean for your marine butterfly valves?
A1: It means we provide complete documentation tracing the valve's history. This includes certificates for the raw materials used (with heat numbers), records of the manufacturing processes, results of all pressure and functional tests, and a final certificate of conformity. This is essential for maritime regulatory compliance.
Q2: Are these valves suitable for seawater applications?
A2: Yes, they are specifically designed for marine environments. We offer body materials like epoxy-coated ductile iron or stainless steel 316, along with seawater-resistant seat materials like EPDM, which together provide excellent corrosion resistance against seawater.
Q3: What pressure classes are available?
A3: Our standard marine butterfly valves are typically available in PN10, PN16, and ANSI 150 pressure ratings. Other pressure classes can be considered based on your specific design requirements.
Q4: Can I get valves with electric or pneumatic actuators?
A4: Absolutely. We offer a variety of actuation solutions. You can choose manual lever or gear operation, or we can fit the valve with electric or pneumatic actuators from reputable brands or as per your specifications for automated control systems.
Q5: What is your lead time for standard sizes?
A5: For standard configurations and sizes within our inventory, lead times are generally competitive. Exact timelines depend on the order quantity and specific specifications. We prioritize efficient production and shipping from our ports in Shanghai, Guangzhou, Hong Kong, or Beijing.
Q6: Do you provide custom markings or packaging?
A6: Yes, customization is available. We can provide valve markings according to your purchase order requirements, such with specific tags, nameplates, or color coding. Export-standard wooden crate packaging is standard to ensure safe ocean freight delivery.
Q7: How do I select the right seat material?
A7: Seat material selection depends on the fluid media and temperature. EPDM is standard for cold water and seawater, NBR for oils, PTFE for chemicals and higher temperatures, and Viton for more aggressive fluids. Our technical team can assist you in selecting the optimal material.
Q8: What after-sales support do you offer?
A8: We provide technical documentation, installation guidance, and support for spare parts like seals and gaskets. Our goal is to ensure the long-term, reliable performance of your valve investment.
Choosing Shanghai Zhibang Valve as your marine valve supplier means partnering with a dedicated manufacturer whose products are proven across continents—from the shipyards of Eastern Europe to the fleets operating in Oceania and the Americas. Our ISO9001 certification is a testament to our systematic approach to quality, ensuring every valve that leaves our factory, backed by full traceability documentation, meets stringent performance criteria. We invite you to leverage our manufacturing expertise and global logistics network to equip your vessels with reliable, documented, and high-performance butterfly valves. Contact us today to discuss your project specifications or to request a detailed quotation.
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