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CB/T3191 Duplex Stainless Steel Ball Valve for Offshore Platform Seawater Cooling Systems
Product Spotlights
Engineered for harsh offshore environments, this CB/T3191 compliant ball valve uses duplex stainless steel for exceptional corrosion/erosion resistance in seawater cooling systems. It ensures reliable bubble-tight shutoff, offers versatile actuation (manual/pneumatic/electric), and is backed by ISO9001 manufacturing. Available in wide size/pressure ranges, it reduces maintenance and enhances safety for global platform operations.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T3191 Marine Industry Standard
Application:
Other, Seawater Cooling Systems on Offshore Platforms
Material:
Duplex Stainless Steel (e.g., UNS S31803/S32205)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
CB/T3191 Marine Industry Standard
Application
Other, Seawater Cooling Systems on Offshore Platforms
Material
Duplex Stainless Steel (e.g., UNS S31803/S32205)
Connection Type
Flanged, Threaded, or Welded
Pressure Rating
PN16 to PN100 (or Class 150 to Class 600)
Size Range
DN15 to DN500 (1/2“ to 20“)
Operation
Manual Lever, Gearbox, Pneumatic, or Electric Actuator
Temperature Range
-20°C to +200°C
Seat/Seal Material
PTFE, Reinforced PTFE, or Metal Seated
End Connection Standard
ANSI, DIN, JIS, GB, or Customizable
As a specialized manufacturer with a proven track record since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is dedicated to providing robust and reliable fluid control solutions for demanding industrial applications. Our CB/T3191 Duplex Stainless Steel Ball Valve is engineered specifically for the harsh environments of offshore platform seawater cooling systems. This valve combines the superior corrosion resistance of duplex stainless steel with the stringent requirements of marine standards, offering a durable and low-maintenance solution that ensures long-term system integrity and operational safety. Designed to withstand the challenges of seawater, high pressure, and corrosive atmospheres, it represents a smart investment for operators seeking to minimize downtime and lifecycle costs.
The core of this valve's performance lies in its construction and design features:
- Superior Corrosion & Erosion Resistance: Manufactured from duplex stainless steel (grades like UNS S31803/S32205), the valve body, ball, and stem offer excellent resistance to pitting, crevice corrosion, and stress corrosion cracking caused by chloride-rich seawater. This material provides approximately twice the yield strength of standard austenitic stainless steels (304/316), significantly enhancing its durability against erosion from sand and particulates in seawater.
- Compliance with Marine Standards: The valve is designed and tested in accordance with the Chinese CB/T3191 standard for marine valves, ensuring it meets specific requirements for materials, pressure ratings, dimensions, and performance in marine applications. This provides a recognized benchmark for quality and suitability.
- Bubble-Tight Shut-off: Advanced seat materials, such as reinforced PTFE or metal seats, ensure reliable, bubble-tight sealing even after prolonged cycling and exposure to seawater, preventing costly leaks and ensuring efficient system operation.
- Low Torque Operation & Extended Service Life: A precision-machined ball and low-friction seat design contribute to smooth, low-torque operation, which is crucial for both manual and actuated applications. This reduces wear on the stem seals and extends the overall service life of the valve.
- Versatile Actuation Options: To suit various levels of automation and remote control needs on offshore platforms, the valve can be equipped with manual levers, gear operators, or integrated with pneumatic and electric actuators available upon request.
- Fire-Safe Design (Optional): For applications requiring additional safety, fire-safe designs compliant with standards like API 607/API 6FA can be provided, featuring secondary metal seals that maintain sealing integrity in the event of a fire.
The technical specifications below provide a clear overview of the valve's capabilities. Please note that specific parameters can be customized based on your project requirements.
| Parameter | Specification / Range |
| Design Standard | CB/T3191 |
| Body Material | Duplex Stainless Steel (UNS S31803/S32205 or equivalent) |
| Pressure Rating | PN16, PN25, PN40, PN64, PN100 (or ANSI Class 150, 300, 600) |
| Size Range (Nominal Diameter) | DN15 (1/2") to DN500 (20") |
| Temperature Range | -20°C to +200°C (Standard Seat); Higher ranges customizable |
| End Connection | Flanged (ANSI, DIN, JIS, GB), Threaded (NPT, BSP), Butt-Weld |
| Seat Material (Standard) | Reinforced PTFE (RPTFE) |
| Operation | Manual Lever, Gear Operator, Pneumatic Actuator, Electric Actuator |
Choosing our CB/T3191 Duplex Stainless Steel Ball Valve delivers tangible benefits for your offshore operations:
- Enhanced System Reliability: Reduces the risk of unexpected failures in critical cooling circuits, supporting continuous platform operation.
- Reduced Maintenance Costs: The exceptional corrosion resistance translates to fewer replacements and less frequent maintenance interventions, lowering total cost of ownership.
- Operational Safety: Reliable shut-off and robust construction contribute to a safer working environment by preventing leaks of process fluids or seawater.
- Global Supply Chain Support: With an annual export value ranging between US$1 Million and US$1.5 Million, and major shipment ports including Shanghai, Guangzhou, Hong Kong, and Beijing, we have the experience and logistics network to supply projects worldwide, from North America and Europe to Southeast Asia, Africa, and the Middle East.
Backed by our ISO9001-certified quality management system, every valve undergoes rigorous inspection and testing to ensure it meets the promised specifications and performance standards. Our position as a manufacturer allows for direct control over quality and cost, enabling us to offer competitive pricing without compromise. Trusted by clients across diverse global markets, we understand the specific needs of offshore applications. For your next seawater cooling system project, partner with a supplier that combines material expertise, manufacturing precision, and proven export capability. Contact us today to discuss your specifications, request a detailed quotation, or explore customization options tailored to your platform's unique requirements.
Frequently Asked Questions (FAQ)
-
Q: Why is duplex stainless steel specifically recommended for seawater cooling systems?
A: Duplex stainless steel offers an optimal balance of high strength and superior resistance to chloride-induced corrosion (like pitting and stress corrosion cracking) compared to standard 316 stainless steel. This makes it particularly suitable for the aggressive, saline environment of seawater, ensuring longer service life. -
Q: Does compliance with CB/T3191 mean the valve is suitable for international projects?
A: Yes. While CB/T3191 is a Chinese marine industry standard, it specifies rigorous requirements for materials, pressure, and testing. The valve can also be manufactured to meet other international standards like ANSI/API, DIN, or JIS upon request, making it suitable for global offshore projects. -
Q: What are the available actuation methods, and how do I choose?
A: We offer manual (lever/gear), pneumatic, and electric actuation. The choice depends on your system's automation level, available power source (air or electricity), required speed of operation, and need for remote control. Our team can advise based on your specific setup. -
Q: Can this valve handle seawater with sand or other suspended solids?
A: Yes. The combination of duplex stainless steel's erosion resistance and potential design features like hardened trim or specific seat materials can be selected to handle abrasive media commonly found in untreated seawater. -
Q: What is the typical delivery lead time for standard sizes?
A: Lead times vary based on size, pressure rating, and order quantity. For standard configurations, typical lead times range from 4 to 8 weeks. We provide accurate timelines upon receipt of your detailed inquiry. -
Q: Do you provide full documentation and certification with the valves?
A: Yes. As an ISO9001-certified manufacturer, we provide essential documentation, which may include material test certificates, pressure test reports, and a certificate of conformity. Specific certification requirements can be discussed. -
Q: Is the valve suitable for both above-deck and submerged service?
A: The standard valve is designed for general seawater service in piping systems. For fully submerged applications or particularly severe conditions, specific design considerations, such as enhanced sealing or cathodic protection compatibility, should be reviewed. Please consult our engineers. -
Q: What after-sales support do you offer?
A: We provide technical support for installation and operation. Additionally, we maintain an inventory of common spare parts like seals and gaskets to support maintenance needs and ensure minimal downtime for our clients.
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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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