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Help CenterMarine Pipeline Isolation Valve: API 609 Fire Safe Butterfly for Ballast and Cargo Systems
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Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016, is a professional manufacturer specializing in high-performance industrial valves. Our Marine Pipeline Isolation Valve – an API 609 Fire Safe Butterfly Valve – is specifically engineered for ballast and cargo systems on ships. Combining robust fire-safe design with exceptional sealing performance, this valve ensures reliable isolation even under extreme marine conditions, reducing maintenance downtime and enhancing operational safety. With annual exports exceeding US$1 million to markets across North America, South America, Europe, Asia, and Oceania, our valves have earned trust from shipbuilders and marine engineers worldwide.
Key Features & Technical Specifications
Our fire-safe butterfly valve is designed to meet the stringent requirements of marine piping systems. Below are its core features and benefits:
- API 609 Compliant Design – Fully conforms to API 609 for face-to-face dimensions and pressure-temperature ratings, ensuring interchangeability and reliable performance.
- Fire Safe (API 607/API 6FA) – The valve has been tested to maintain sealing integrity during and after fire exposure, preventing leakage of hazardous fluids. (Certification documents available upon request.)
- Bi-Directional Sealing – Provides absolute shut-off in both flow directions, ideal for ballast and cargo systems where reverse flow may occur.
- Corrosion-Resistant Materials – Available in ductile iron, stainless steel (CF8/CF8M), or dual-plate construction with epoxy coating for long service life in seawater environments.
- Low Torque Operation – Optimized disc profile reduces operating torque, allowing for smaller actuators and easier manual operation.
- Zero Leakage Class (FCI 70-2 Class VI) – Soft-seat option ensures bubble-tight shut-off, critical for ballast water management and cargo handling.
- Multiple Actuation Options – Lever, gearbox, pneumatic, or electric actuator available, with custom mounting brackets for integration into ship automation systems.
- Compact & Lightweight – Wafer-style body reduces weight and space requirement, simplifying installation in confined engine rooms or pipe racks.
| Parameter | Specification |
|---|---|
| Standard | API 609, ISO 5752, EN 593 |
| Nominal Diameter | DN50 (2") to DN600 (24") – larger sizes customizable |
| Pressure Rating | PN10, PN16, Class 150 (higher ratings on request) |
| Body Material | Ductile Iron (GJS 400-15), WCB, CF8, CF8M, or duplex stainless steel |
| Disc Material | Stainless steel (SS304, SS316), Duplex, or Ni-Al Bronze |
| Seat Material | PTFE, RPTFE, or Fire-Safe graphite + PTFE |
| Temperature Range | -20°C to +200°C (higher with special materials) |
| Leakage Rate | Soft seat: API 598 Zero Leakage (Class VI); Metal seat: API 598 Class II |
| Certifications | ISO9001:2015; Fire-Safe test report available |
Advantages for Marine Ballast & Cargo Systems
- Fire Safety Compliance – Essential for ballast and cargo lines where flammable liquids (e.g., crude oil, fuel) may be present. Our valve meets API 607 fire-safe test, providing peace of mind for ship operators.
- Seawater Compatibility – Duplex stainless steel disc and nickel-aluminum bronze trim offer excellent resistance to pitting and crevice corrosion in seawater ballast systems.
- Reduced Lifecycle Cost – Low-maintenance design with replaceable seat and O-rings; long service life minimizes spare parts inventory and replacement costs.
- Easy Retrofit – Wafer or lug style fits between existing flanges (PN10/16 or Class 150) without special adaptors, ideal for upgrading older vessels.
- High Flow Capacity – Thin disc profile and streamlined body reduce pressure drop, improving pump efficiency and flow rates in cargo loading/unloading operations.
Trust & Reliability from Shanghai Zhibang Valve
Since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd has focused on delivering precision valves for critical applications. Our manufacturing facility in Shanghai operates under an ISO9001:2015 quality management system, ensuring consistent product quality from raw material inspection to final pressure testing. With an annual export value of US$1–US$1.5 million and shipping to ports including Shanghai, Guangzhou, Hong Kong, and Beijing, we have supplied valves to shipyards and marine operators in over 20 countries. Our technical team provides full support for valve selection, actuator sizing, and installation guidance. We also offer customization services such as special coatings, extended stems, and locking devices to meet specific vessel requirements.
Choose our Marine Pipeline Isolation Valve for a dependable solution that enhances safety, reduces downtime, and meets the most demanding marine standards. Contact us today for a quote or technical datasheet – your satisfaction is our priority.
Frequently Asked Questions (FAQ)
Q1: Is this valve suitable for both ballast water and crude oil cargo systems?
A: Yes, this fire-safe butterfly valve is designed for a wide range of media including seawater, ballast water, crude oil, fuel oil, and chemical products (depending on material selection). For specific compatibility, please consult our technical team.
Q2: Does the valve have fire-safe certification? Can you provide test certificates?
A: The valve is designed and tested according to API 607 fire-safe requirements. Test reports and certificates are available upon request. We do not include unverified certifications in standard documentation, but you can request a copy for your project.
Q3: What is the difference between wafer and lug styles for marine use?
A: Wafer style is lighter and less costly, suitable for dead-end service with pipe supports. Lug style allows removal of downstream piping without draining the system, which is beneficial for cargo tanks. Both are available.
Q4: Can you supply the valve with a pneumatic actuator and positioner for remote control?
A: Absolutely. We offer pneumatic (double-acting or spring-return) and electric actuators, with options for limit switches, solenoid valves, and smart positioners. Actuator sizing is included in our scope.
Q5: What is the typical lead time for a standard order?
A: For standard sizes (DN50 to DN300) and common materials, lead time is approximately 15–25 working days after order confirmation. Larger sizes or special materials may require 30–40 days. We ship from Shanghai, Guangzhou, or Hong Kong ports.
Q6: Is the valve suitable for high-pressure cargo system up to 16 bar?
A: Yes, our valve is available in PN10, PN16, and Class 150 (approximately 10–20 bar working pressure). For higher pressures (e.g., PN25 or Class 300), we can manufacture special versions upon request.
Q7: Do you offer warranty and after-sales support?
A: We provide a standard 12-month warranty from date of shipment against manufacturing defects. Our Shanghai-based team can also arrange remote technical support or on-site assistance for large projects.
Q8: How do I determine the correct valve size and pressure class for my marine system?
A: Please provide your pipeline diameter, design pressure, temperature, and media type. Our engineers will recommend the appropriate size, material, and actuation based on API 609 and your system parameters.
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