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CB/T3191 Marine Ball Valve For Seawater, 316L Stainless Steel, Standard Compliant With Technical Support

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Product Spotlights

Engineered for demanding marine seawater systems, this CB/T3191 compliant ball valve utilizes corrosion-resistant 316L stainless steel for extended service life. It offers reliable sealing, versatile sizing (DN15-DN300), and multiple actuation options. Backed by ISO9001 manufacturing and global export experience, it provides a durable, standard-compliant solution supported by technical expertise.
Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T3191
Application:
Other, Marine seawater systems
Material:
316L Stainless Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
Standard CB/T3191
Application Other, Marine seawater systems
Material 316L Stainless Steel
Connection Type Flanged (common), threaded optional
Size Range DN15 to DN300 (customizable)
Pressure Rating PN10 to PN40 (available)
Operation Manual, pneumatic, or electric actuator optional
Sealing PTFE or reinforced seals for seawater
Design Full port or standard port design

As a professional manufacturer with a strong foundation in the valve industry, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T3191 Marine Ball Valve specifically engineered for seawater applications. Built with premium 316L stainless steel, this valve is designed to withstand the corrosive challenges of marine environments while ensuring reliable flow control. Since our establishment in 2016, we have dedicated ourselves to producing high-performance valves that meet stringent industry standards, supported by our ISO9001 certified quality management system. Our valves are trusted globally, exported from major ports like Shanghai and Guangzhou to markets across North America, Europe, Asia, and beyond.

This marine ball valve is not just a component; it is a critical solution for shipbuilding, offshore platforms, and seawater treatment systems. Its compliance with the CB/T3191 standard guarantees its suitability for marine use, providing engineers and procurement specialists with a product that combines durability, technical precision, and long-term cost-effectiveness.

  • Corrosion Resistance Champion: The use of 316L stainless steel, with its low carbon content and added molybdenum, offers superior resistance to pitting and crevice corrosion caused by chloride-rich seawater, significantly extending service life.
  • Standard-Compliant Reliability: Manufactured in accordance with the Chinese CB/T3191 standard for ship valves, ensuring dimensional accuracy, material requirements, and performance benchmarks suitable for marine applications.
  • Robust Sealing Performance: Equipped with advanced sealing materials such as PTFE or specially reinforced elastomers that maintain integrity against seawater pressure and temperature variations.
  • Versatile Operation & Configuration: Available with manual handwheel, lever, or optional pneumatic/electric actuators for remote or automated control, adapting to various system designs.
  • Full Flow Efficiency: The full port design (optional) minimizes flow resistance and pressure drop, ideal for systems requiring high throughput.
  • Technical Support Backing: Every valve comes with comprehensive technical documentation and access to our engineering team for installation, maintenance, and application consultation.

The technical specifications of our CB/T3191 Marine Ball Valve are detailed below to provide clear and actionable information for your project planning.

Primary Material 316L Stainless Steel (Body, Ball, Stem)
Standard Compliance CB/T3191 (Marine Valve Standard)
Nominal Size Range DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 (Other sizes customizable)
Pressure Rating (PN) PN10, PN16, PN25, PN40 (Selectable based on design)
Connection Types Flanged (RF, FF), Threaded (NPT, BSPT) - available upon request
Sealing Material PTFE (Standard), Enhanced PTFE, Special Elastomers for seawater
Temperature Range -20°C to +200°C (depending on seal selection)
Actuation Options Manual (Handwheel/Lever), Pneumatic Actuator, Electric Actuator (optional)

Choosing this valve brings tangible benefits to your operations:

  • Enhanced System longevity: The exceptional corrosion resistance reduces failure rates and maintenance intervals, lowering overall lifecycle costs.
  • Uninterrupted Operations: Reliable sealing and robust construction prevent leaks and ensure consistent system performance in demanding conditions.
  • Design Flexibility: A wide range of sizes, pressure ratings, and actuation methods allows for seamless integration into new or existing seawater systems.
  • Regulatory Confidence: Compliance with the recognized CB/T3191 standard simplifies approval processes for marine projects.
  • Expert Support: Our technical team provides guidance from selection to installation, ensuring optimal valve performance.

Our commitment to quality and customer satisfaction is reflected in our track record. With an annual export value ranging between US$1 Million and US$1.5 Million, Shanghai Zhibang Valve has established a strong presence in key markets worldwide, including North America, Eastern Europe, Southeast Asia, Africa, and Oceania. This global reach is built on the reliability of our products and the trust of our partners. Our ISO9001 certification underpins our manufacturing processes, ensuring consistent quality control from raw material inspection to final testing. When you select our CB/T3191 Marine Ball Valve, you are not just purchasing a component; you are investing in a solution backed by years of manufacturing expertise, a robust quality system, and a proven ability to serve diverse international markets. We encourage you to contact us for detailed quotations, technical datasheets, or to discuss custom requirements for your specific seawater application.

Frequently Asked Questions (FAQ)

  1. Why is 316L stainless steel specifically recommended for seawater valves?
    316L stainless steel contains molybdenum, which greatly enhances its resistance to chloride-induced corrosion (like pitting and crevice corrosion), common in seawater. Its low carbon content also improves weldability and reduces susceptibility to sensitization.
  2. What does compliance with the CB/T3191 standard mean for my project?
    CB/T3191 is a Chinese national standard specifically for valves used on ships. Compliance ensures the valve meets defined requirements for materials, dimensions, pressure ratings, and testing methods suitable for marine environments, aiding in regulatory acceptance.
  3. Can this valve be used with other corrosive fluids besides seawater?
    Yes, the 316L material offers good resistance to many corrosive media, including certain acids, alkalis, and other chloride solutions. However, suitability for a specific fluid should be verified with our technical team.
  4. What are the available options for automating this ball valve?
    We offer optional pneumatic actuators (single or double-acting) and electric actuators (on/off or modulating). The valve can be pre-assembled with an actuator or supplied separately for field mounting.
  5. How do I select the correct pressure rating (PN) for my application?
    The pressure rating should be selected based on the maximum operating pressure in your system. Common ratings are PN16 or PN25 for many seawater applications. Our engineers can assist in selection based on your system design pressure.
  6. Is the valve suitable for high-temperature seawater applications?
    The 316L body can withstand high temperatures, but the sealing material determines the operational temperature limit. Standard PTFE seals are suitable up to around 200°C. For higher temperatures, special seal materials can be inquired.
  7. What kind of technical support is provided with the valve?
    We provide detailed product drawings, material certificates, installation manuals, and performance test reports. Additionally, our engineers are available for consultation on application suitability, installation procedures, and maintenance practices.
  8. What is the typical delivery lead time for these valves?
    Lead times vary based on size, configuration, and order quantity. Standard sizes and configurations often have shorter lead times. For accurate delivery schedules, please inquire with your specific requirements.
Product Tags: 316L Stainless Steel Marine Ball Valve , CB/T3191 Seawater Ball Valve , Marine Standard Ball Valve

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Gold Verified Supplier
1Yr
Verified Business License
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001