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Help CenterAPI 6D Marine Ball Valve With 5-Year Warranty on Seal and Stem, Mill Test Report Provided
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As a leading manufacturer with a strong track record since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance fluid control solutions for demanding global markets. Our API 6D Marine Ball Valve is engineered to meet the rigorous standards of marine and offshore operations, offering exceptional reliability and durability. We back our commitment to quality with a robust 5-year warranty on the seal and stem and provide a comprehensive Mill Test Report (MTR) for full material traceability, giving you the confidence and documentation required for critical projects.
This valve is designed to perform under the harshest conditions, ensuring safe and efficient flow control in pipelines carrying water, fuel, oil, gas, and other media. Its robust construction and adherence to API 6D specifications make it a trusted choice for shipbuilding, offshore platforms, FPSOs, and coastal infrastructure. We understand the importance of minimizing downtime and maintenance costs, which is why our valve is built for long service life and backed by an industry-leading warranty on its most critical wear components.
Key Features and Technical Advantages:
- API 6D Compliance: Manufactured in strict accordance with API 6D (Pipeline Valves) specifications, ensuring it meets the dimensional, design, testing, and performance requirements for pipeline service, particularly in severe service applications common in marine environments.
- Extended 5-Year Warranty: We offer an unprecedented 5-year warranty specifically covering the seal and stem assembly. This demonstrates our confidence in the material quality, design, and manufacturing process, significantly reducing your long-term operational risk and total cost of ownership.
- Full Material Traceability: Each valve is supplied with a Mill Test Report (MTR) from the raw material mill. This certificate provides detailed chemical composition and mechanical properties, which is crucial for quality audits, regulatory compliance, and engineering documentation in marine projects.
- Robust Construction for Marine Use: The valve body, ball, and stem are constructed from materials selected for corrosion resistance in saline and offshore atmospheres, such as carbon steel with special coatings, stainless steel (CF8M, CF3M), or duplex/super duplex steels.
- Superior Sealing Performance: Features advanced seat and seal materials (such as reinforced PTFE, RPTFE, or metal seats) that provide excellent sealing integrity, even after prolonged exposure to seawater, varying temperatures, and high-cycle operations.
- Fire-Safe Design Option: Available with fire-safe design per API 607/API 6FA standards, providing an additional layer of safety by maintaining sealing capability in the event of a fire, a critical requirement for offshore platforms and tankers.
- Versatile Operation and Configuration: Can be supplied with a standard lever, manual gear operator for larger sizes, or automated with pneumatic/hydraulic/electric actuators for remote control, integrating seamlessly into modern ship automation systems.
Detailed Technical Specifications:
| Parameter | Specification |
| Design Standard | API 6D, ASME B16.34 |
| Face-to-Face | API 6D, ASME B16.10 |
| Flange End Standard | ASME B16.5, JIS, DIN, GB Standards |
| Pressure Class | Class 150, 300, 600, 900, 1500, 2500 (ANSI) / PN10 to PN420 |
| Size Range | 2" to 48" (DN50 to DN1200) |
| Body Material | WCB, LCB, CF8, CF8M, CF3, CF3M, Duplex, Super Duplex |
| Ball & Stem Material | SS316, SS304, 17-4PH, Duplex Steel, with optional coatings |
| Seat & Seal Material | RPTFE, PTFE, Nylon, PEEK, Metal Seated (optional) |
| Temperature Range | -29°C to +200°C (standard); wider ranges available upon request |
| Leakage Class | API 598 / ISO 5208 (Zero Leakage achievable) |
| Operation | Lever, Gear Operator, Pneumatic/Hydraulic/Electric Actuator |
Benefits to Our Customers:
- Enhanced Project Credibility: The API 6D certification and provided MTR simplify your approval processes with shipyards, classification societies (like ABS, DNV, LR, BV), and end-clients.
- Reduced Lifecycle Costs: The extended warranty on key components lowers maintenance budgets and protects against unexpected failure costs, while the durable construction minimizes the frequency of replacements.
- Operational Safety and Reliability: Designed for zero-leakage performance and high-pressure integrity, these valves ensure the safety of personnel, assets, and the marine environment.
- Global Supply Chain Support: With annual exports ranging between US$1-1.5 million and serving markets across North America, South America, Europe, Asia, Africa, and Oceania, we have the experience and logistics network to support your global projects from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing.
Our commitment to quality is underpinned by our ISO9001-certified manufacturing system, ensuring consistent production standards. With years of experience supplying to diverse international markets, we understand the specific needs of marine engineering. The combination of API 6D compliance, a strong 5-year warranty on critical parts, and full material documentation makes this valve a reliable and value-driven choice. We encourage you to contact us to discuss your specific size, pressure, material, and actuation requirements for your next marine or offshore project.
Frequently Asked Questions (FAQ):
Q1: What does "API 6D" mean for this marine ball valve?
A1: API 6D is a specification from the American Petroleum Institute for pipeline valves. It defines stringent requirements for design, materials, dimensions, testing, and performance. For a marine ball valve, this ensures it is suitable for high-pressure, high-integrity applications common in offshore oil & gas, ship fuel systems, and ballast lines, providing assurance of reliability and safety.
Q2: Why is a 5-year warranty on the seal and stem significant?
A2: The seal and stem are the primary moving parts most susceptible to wear and failure. A 5-year warranty demonstrates the manufacturer's confidence in the quality of these components. It offers you long-term protection against premature failure, reducing maintenance costs and operational risks over the valve's lifespan, which is particularly valuable in hard-to-access marine installations.
Q3: What information is included in the Mill Test Report (MTR)?
A3: The MTR is a material certificate from the steel mill. It typically includes the heat number, chemical composition (percentages of elements like Carbon, Chromium, Nickel), mechanical properties (yield strength, tensile strength, elongation), and results of hardness and impact tests. This traceability is essential for quality control, regulatory compliance, and documentation required by classification societies.
Q4: Can this valve be used with seawater?
A4: Yes, when specified with appropriate materials. For seawater service, we recommend materials like Duplex Stainless Steel (UNS S31803/S32205), Super Duplex, or 6% Molybdenum Austenitic Stainless Steel (UNS S31254). Standard stainless steel (316) may also be used depending on chloride content and temperature. We can advise on the best material selection for your specific seawater application.
Q5: Is this valve suitable for fire-safe applications?
A5: Yes, we offer a fire-safe design option. These valves are tested and certified to standards like API 607, API 6FA, or ISO 10497. In a fire event, special secondary seals (often graphite) expand to maintain a seal even if the primary soft seals are compromised, which is a mandatory requirement for many offshore and tanker applications.
Q6: Can you provide valves with actuators for automated control?
A6: Absolutely. We can supply the valves fitted with pneumatic (double-acting or spring-return), hydraulic, or electric actuators. We work with reputable actuator brands and can provide complete packages ready for installation, including limit switches, solenoid valves, and positioners as required by your control system.
Q7: What are your main export markets, and what is your delivery capability?
A7: We have successfully supplied valves to a wide range of markets including North America, South America, Eastern and Western Europe, Southeast Asia, Africa, Oceania, and the Middle East. We ship from major Chinese ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring flexible and efficient logistics. Our annual export volume of US$1-1.5 million reflects our capability and experience in handling international orders.
Q8: Do you offer customization for non-standard sizes or pressures?
A8: Yes, as a manufacturer, we have the engineering capability to customize valves. This includes non-standard sizes, special pressure ratings, unique material combinations, extended stem lengths for insulation, or special painting/coating requirements per client specifications. Please share your detailed requirements for a tailored solution.
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