API 6D 316 Stainless Steel Marine Ball Valve, DN50-DN200, Class 150/300, Flanged End
Product Spotlights
As a leading manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium range of API 6D 316 Stainless Steel Marine Ball Valves. Engineered for demanding marine and offshore applications, these valves combine robust construction with precise engineering to ensure leak-proof performance and long service life in corrosive and high-pressure environments. Our dedication to excellence, backed by ISO9001 certified manufacturing processes, ensures every valve meets the stringent requirements of global maritime and industrial standards. We understand the critical need for dependable fluid control in your operations, and our valves are designed to deliver just that—superior durability, ease of operation, and minimal maintenance.
Our API 6D Marine Ball Valves are specifically crafted to withstand the harsh conditions of saltwater, chemicals, and variable pressures. The core of their performance lies in the meticulous selection of materials and adherence to international design codes.
- Superior Corrosion Resistance: The valve body, ball, stem, and trim are constructed from ASTM A351 CF8M / AISI 316 stainless steel. This material offers excellent resistance to pitting and crevice corrosion caused by chlorides, making it ideal for seawater, brackish water, and chemical cargo handling systems on ships, oil rigs, and coastal plants.
- Robust Pressure Containment: Designed and tested per API 6D and API 608 standards, these valves are available in pressure classes 150 and 300, suitable for a wide range of working pressures. The full-port or reduced-port design ensures minimal pressure drop and efficient flow.
- Reliable Sealing Performance: Equipped with advanced seat materials like PTFE or reinforced PTFE, the valves provide a bubble-tight seal. Optional fire-safe design per API 607/API 6FA standards is available for applications where fire integrity is a concern.
- Durable Operation & Low Maintenance: Features include a blow-out proof stem, anti-static device, and self-lubricating bushings. They can be operated via a standard lever or an optional gear operator for larger sizes, ensuring smooth quarter-turn operation even after prolonged periods of inactivity.
- Versatile Flanged Connections: The flanged ends conform to ASME B16.5 standards, with Raised Face (RF) or Ring Type Joint (RTJ) facings available. This ensures easy and secure installation into existing piping systems common in marine engineering.
Detailed technical specifications for common sizes are summarized below:
| Nominal Size (DN) | Pressure Class | Approx. Weight (kg) | Standard Bore |
|---|---|---|---|
| 50 (2") | 150 / 300 | 8 - 12 | Full / Reduced |
| 80 (3") | 150 / 300 | 15 - 22 | Full / Reduced |
| 100 (4") | 150 / 300 | 25 - 38 | Full / Reduced |
| 150 (6") | 150 / 300 | 55 - 85 | Full / Reduced |
| 200 (8") | 150 / 300 | 95 - 140 | Full / Reduced |
Benefits for Your Business: Choosing our valves translates to tangible advantages. You gain a component that reduces the risk of unplanned downtime due to valve failure, lowers long-term maintenance and replacement costs, and ensures compliance with marine classification society rules (such as ABS, DNV, BV). Their reliable performance protects your valuable assets and cargo, contributing to safer and more efficient operations.
Since our establishment in 2016, Shanghai Zhibang Valve has grown into a trusted supplier, exporting over US$1 million worth of high-quality valves annually to markets across North America, Europe, Asia, and beyond. Our ISO9001 certification is a testament to our unwavering focus on quality management at every stage of production. With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and cost-effective delivery to your project site anywhere in the world. Partner with us for valves that are built to last and perform under pressure. Contact our team today for a detailed quotation, technical datasheets, or to discuss custom requirements for your specific marine application.
Frequently Asked Questions (FAQ):
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Q: What is the main advantage of an API 6D ball valve compared to a standard ball valve?
A: API 6D is a specific standard for pipeline valves, emphasizing design, manufacturing, testing, and documentation for the oil, gas, and related industries. Valves meeting API 6D typically offer higher integrity, more rigorous testing (like shell and seat tests), and traceability, making them suitable for critical service applications, including marine and offshore. -
Q: Is 316 stainless steel suitable for seawater applications?
A: Yes, AISI 316 stainless steel, with its molybdenum content, provides significantly better corrosion resistance in chloride environments (like seawater) compared to 304 stainless steel. It is a standard and reliable choice for marine ball valves handling seawater, ballast, and other corrosive media. -
Q: Can these valves be supplied with different end connections besides flanged?
A: This specific product line is designed with flanged ends as standard. However, as a manufacturer, we can provide other end types such as butt-weld or socket-weld on a custom order basis. Please inquire with our sales team for such modifications. -
Q: What is the delivery lead time for an order of DN100, Class 300 valves?
A: Lead times vary based on order quantity and current production schedule. For standard specifications, we typically maintain some inventory or can produce within 4-6 weeks. We provide accurate lead time estimates upon receipt of your official inquiry or purchase order. -
Q: Do you provide certification documents with the valves?
A: Yes. Each valve can be supplied with a standard material test report (MTR). Additional certifications, such as a 3.1 material certificate per EN 10204 or specific NDT reports, are available upon request and may incur extra charges. -
Q: Are these valves fire-safe certified?
A: Our standard valves are not fire-safe by default. However, we offer a fire-safe design option that complies with API 607/API 6FA standards. This feature must be specified at the time of ordering. -
Q: What is the warranty period for your marine ball valves?
A> We offer a standard warranty against defects in materials and workmanship for a period of 12 months from the date of shipment, under normal service conditions as specified in our technical documentation. -
Q: How do I determine whether I need Class 150 or Class 300?
A: The pressure class selection depends on your system's maximum working pressure and temperature. Class 300 valves have a higher pressure rating than Class 150 at the same temperature. Please consult your system design specifications or provide the operating conditions to our engineers for a recommendation.
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