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Home > Industrial Equipment & Components > Valve > Butterfly Valve > CB/T3191 Bronze Marine Ball Valve for Seawater Cooling Line Isolation on Vessels

CB/T3191 Bronze Marine Ball Valve for Seawater Cooling Line Isolation on Vessels

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CB/T3191 Bronze Marine Ball Valve for Seawater Cooling Line Isolation on Vessels photo-4

CB/T3191 Bronze Marine Ball Valve for Seawater Cooling Line Isolation on Vessels photo-5

Product Spotlights

Corrosion-resistant bronze construction for long life in seawater. Bubble-tight PTFE sealing ensures reliable isolation. Low-torque operation with full-port design for efficient flow. Complies with CB/T3191 and global standards. Optional fire-safe design and various end connections for versatile marine applications.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Application:

Other, Seawater Cooling Line Isolation on Vessels

Standard:

CB/T3191, GB/T, JIS, DIN

Material:

Bronze (C95800 or equivalent)

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Application Other, Seawater Cooling Line Isolation on Vessels

Standard CB/T3191, GB/T, JIS, DIN

Material Bronze (C95800 or equivalent)

Connection Type Flanged, Threaded, or Welded

Pressure Rating PN16/PN25, Class 150/300

Temperature Range -20°C to 200°C

Operation Manual Lever, Gear, or Actuated

Seat Material PTFE, Reinforced PTFE, or Metal

Fire Safe Design Optional, Available Upon Request

As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for the global marine industry. Our CB/T3191 Bronze Marine Ball Valve is engineered specifically for the demanding task of isolating seawater cooling lines on various vessels. With an annual export value exceeding US$1 million, we have established a trusted reputation across North America, Southeast Asia, Europe, and beyond, ensuring our products meet the rigorous standards required for reliable marine operation.

This valve is designed to offer superior durability and leak-proof performance in corrosive seawater environments. Its robust construction and thoughtful design features address the common challenges faced in marine cooling systems.

Key Features and Technical Advantages:

Corrosion-Resistant Bronze Body: Manufactured from high-grade bronze alloys (such as C95800), the valve body offers excellent resistance to seawater corrosion, pitting, and cavitation, ensuring a long service life even in harsh marine conditions.
Bubble-Tight Sealing: Features precision-machined ball and seats, typically made from PTFE or reinforced PTFE, which provide reliable, bubble-tight shut-off to prevent cooling system leakage and maintain operational efficiency.
Low Torque Operation: The smooth, polished ball surface and low-friction seat design ensure easy operation with minimal torque, whether operated by a manual lever, gearbox, or an automated actuator, reducing operator fatigue.
Full Port Design: Many models feature a full port (full bore) design, which minimizes pressure drop across the valve and allows for efficient flow of seawater, pigging, or cleaning tools through the pipeline.
Versatile End Connections: Available with flanged, threaded, or weld end connections to seamlessly integrate with existing piping systems on board, complying with international standards like GB/T, JIS, and DIN.
Robust Stem Design: The stem is designed with an anti-blowout feature and effective sealing to prevent stem leakage, enhancing safety and reliability.
Fire-Safe Option: For applications requiring enhanced safety, fire-safe designs with metal secondary seals are available upon request to maintain functionality in emergency scenarios.

Technical Specifications Table:

Parameter	Specification
Product Standard	CB/T3191, with options for GB/T, JIS, DIN
Body Material	Bronze (C95800 / Naval Brass)
Pressure Rating	PN16, PN25, Class 150, Class 300
Temperature Range	-20°C to 200°C (-4°F to 392°F)
Port Type	Standard Port or Full Port
Seat & Seal Material	PTFE, Reinforced PTFE, Metal (Optional)
Operation Mode	Manual Lever, Gear Operator, Pneumatic/Hydraulic/Electric Actuator
Connection Standards	Flanged (e.g., ANSI, JIS), Threaded (NPT, BSP), Butt Weld

Benefits for Our Clients:

Enhanced System Reliability: Prevents unplanned downtime by providing a dependable isolation point for maintenance or emergency shutdown of seawater cooling lines.
Reduced Maintenance Costs: The corrosion-resistant materials and durable construction minimize wear and the need for frequent replacements or repairs.
Operational Safety: Secure sealing and robust design contribute to a safer working environment by preventing leaks that could lead to equipment damage or slip hazards.
Global Compliance: Manufactured in accordance with CB/T3191 and other common international standards, facilitating smooth installation and approval processes for vessels operating worldwide.

Shanghai Zhibang Valve's commitment to quality is underscored by our ISO9001 certification and consistent annual export performance. Our valves are shipped from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring timely delivery to shipyards and vessel operators across the globe. Choosing our CB/T3191 Bronze Marine Ball Valve means partnering with a reliable manufacturer dedicated to supporting the critical infrastructure of the maritime industry. Contact us today to discuss your specific requirements and secure a reliable solution for your vessel's seawater cooling system isolation needs.

Frequently Asked Questions (FAQ)

Q: What is the primary advantage of using a bronze valve for seawater applications?
A: Bronze, particularly alloys like naval brass, offers superior resistance to corrosion from saltwater compared to many other metals, significantly extending the valve's service life and reliability in marine environments.
Q: Can this valve be used with fluids other than seawater?
A: While designed for seawater, it is generally suitable for other non-aggressive fluids like fresh water, oil, or gas within its specified pressure and temperature ratings. Always confirm material compatibility for specific media.
Q: What types of end connections are typically available?
A: We offer flanged, threaded (NPT/BSP), and weld end connections. The choice depends on your existing pipeline design and installation requirements.
Q: Is a fire-safe version of this valve available?
A: Yes, fire-safe designs with secondary metal seals are available as an optional feature. Please specify this requirement when inquiring.
Q: What is the lead time for an order?
A: Lead times vary based on order quantity, specification complexity, and actuator requirements. Standard configurations typically have shorter lead times. We provide accurate timelines upon receipt of your detailed inquiry.
Q: Do you provide customization for specific pressure ratings or sizes?
A: Yes, as a manufacturer, we can customize valves to meet non-standard pressure ratings, sizes, or special operational requirements. Contact our technical team with your specifications.
Q: How do I select between a manual lever and a gear operator?
A: Manual levers are suitable for smaller sizes and lower operating pressures. Gear operators are recommended for larger valve sizes or higher pressures where reduced operating torque is needed.
Q: What after-sales support do you offer?
A: We provide technical documentation, installation guidance, and support for spare parts. Our quality management system ensures traceability and consistent product performance.