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Home > Industrial Equipment & Components > Valve > Butterfly Valve > CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against Corrosion

CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against Corrosion

CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against Corrosion thumbnail-3

CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against Corrosion thumbnail-4

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CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against Corrosion photo-3

CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against Corrosion photo-4

CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against Corrosion photo-5

Product Spotlights

Marine-grade bronze ball valve designed per CB/T3191, offering exceptional corrosion resistance for seawater and shipboard systems. Features robust construction, bubble-tight PTFE seals, and easy quarter-turn operation. Backed by a one-year corrosion warranty from an ISO9001 certified manufacturer, ensuring reliability and reducing lifecycle costs for global marine applications.

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

Key Specifications

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Application:

Other, Marine and offshore piping systems

Material:

Bronze (C95800 or equivalent)

Connection Type:

Threaded (NPT, BSP) or Flanged

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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, Marine and offshore piping systems

Material Bronze (C95800 or equivalent)

Connection Type Threaded (NPT, BSP) or Flanged

Size Range 1/2 inch to 4 inches (or as per request)

Pressure Rating Class 150 to 300 (or as per standard)

Operation Type Manual lever or gear operated

Seat Material PTFE or reinforced PTFE

Design Standard CB/T3191 or other marine standards

Valve Type Full port or standard port

Warranty One year against corrosion

As a professional valve manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve is proud to present our reliable CB/T3191 Bronze Marine Ball Valve. Engineered for demanding marine environments, this valve is built to provide long-lasting, leak-tight shutoff for seawater, ballast, fuel, and other critical shipboard systems. Our commitment to precision manufacturing and rigorous testing ensures each valve delivers the performance and durability that marine engineers and shipyards demand, backed by a solid one-year warranty against corrosion.

This marine-grade ball valve is designed to withstand the harsh conditions at sea, including saltwater exposure, vibration, and variable pressures. Key features and benefits include:

Superior Corrosion Resistance: The valve body is constructed from high-grade bronze alloy, specifically chosen for its excellent resistance to seawater corrosion and biofouling, ensuring a longer service life and reduced maintenance.
Robust Construction & Reliable Sealing: Featuring a robust one-piece or two-piece design with reinforced internals. The seats are typically made from PTFE or similar materials, providing a bubble-tight seal and low operating torque even after prolonged use.
Easy Operation and Maintenance: Designed for quick quarter-turn operation with a sturdy lever or optional gear operator for larger sizes. The stem sealing system is designed to be easily adjustable or repackable in the field, minimizing downtime.
Versatile Configurations: Available in a range of sizes, pressure ratings, and end connections to fit various piping specifications onboard vessels and offshore platforms.

Below is a summary of typical technical specifications. Custom specifications are available upon request to meet your specific project requirements.

Parameter	Specification / Option
Body Material	Bronze (C95800 / UNS C95800, or equivalent naval brass)
Ball Material	Chrome-plated bronze or stainless steel
Seat & Seal Material	PTFE, Reinforced PTFE, or other engineered polymers
Stem Material	Stainless Steel (e.g., SS304/SS316)
Pressure Rating	Class 150, Class 200, Class 300 (ANSI) or PN16, PN25, PN40
Temperature Range	-20°C to 180°C (depending on seat material)
End Connections	Threaded (NPT, BSP), Socket Weld, or Flanged (RF, FF)
Operation	Lever Handle, Gear Operator (for sizes above 2")
Fire Safe Design	Optional, available upon request
Compliance	Designed to meet CB/T3191, and other relevant marine standards

For ship owners, shipyards, and marine equipment suppliers, the advantages are clear:

Enhanced System Reliability: Reduces the risk of leaks and failures in critical systems, contributing to overall vessel safety and operational efficiency.
Reduced Lifecycle Cost: The corrosion-resistant construction and durable components lower the frequency of replacements and repairs, offering significant cost savings over time.
Global Supply Chain Support: With annual export values between US$1 Million and US$1.5 Million and major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we reliably serve a global clientele across North and South America, Europe, Asia, Africa, and Oceania.

Our track record speaks for itself. Established in 2016, Shanghai Zhibang Valve has rapidly grown into a trusted supplier for marine applications worldwide. Our ISO9001 certification underpins our consistent quality control from raw material inspection to final testing. The one-year warranty against corrosion is our tangible commitment to the product's durability. We invite you to experience the reliability of our CB/T3191 Bronze Marine Ball Valves. Contact us today to discuss your specifications, request samples, or place an order for your next marine project.

Frequently Asked Questions (FAQ)

Q: What is the CB/T3191 standard, and why is it important for this valve?
A: CB/T3191 is a Chinese national standard specifically for marine bronze globe valves, but it is widely referenced for quality and material requirements in marine valves. Our ball valve is designed to meet or exceed the material, pressure, and performance criteria outlined in such marine standards, ensuring suitability for shipboard use.
Q: Does the one-year warranty cover all types of corrosion failure?
A: The warranty covers material or manufacturing defects that lead to corrosion failure under normal marine service conditions within one year of operation. It does not cover corrosion caused by improper installation, operation outside specified parameters, or exposure to incompatible media.
Q: What specific bronze alloy do you use, and is it suitable for seawater?
A: We typically use bronze alloys like C95800 (aluminum bronze) or equivalent naval brass, which are renowned for their excellent resistance to seawater corrosion, dezincification, and erosion.
Q: Can these valves be used for fuel oil lines on ships?
A: Yes, they are suitable for various shipboard fluids, including fuel oil, lubricating oil, seawater, and compressed air. Please specify the exact media during inquiry so we can confirm seat material compatibility.
Q: Are the valves available with anti-static and fire-safe features?
A: These are optional features. Anti-static devices and fire-safe designs (to API 607/API 6FA standards) can be provided upon request for applications requiring these safety certifications.
Q: What is the lead time for standard sizes and bulk orders?
A: Standard sizes often have stock availability or short production cycles. For bulk orders, the lead time depends on the quantity and specifications; we provide accurate timelines upon receiving your detailed inquiry.
Q: Do you provide documentation like material certificates and test reports?
A: Yes, as an ISO9001 certified manufacturer, we can provide relevant documentation, including material test certificates (MTC) and factory acceptance test reports, upon request.
Q: How do I select between threaded and flanged connections?
A: The choice depends on your piping system design. Threaded connections are common for smaller lines (typically below 2"), while flanged connections are preferred for larger diameters and easier maintenance. Our team can advise based on your system drawings.