Contact Platform Support
Help CenterCB/T3191 Marine Ball Valve Supplied With Mill Test Report and Warranty
Product Spotlights
Related Products
-
CB/T3191 Bronze Marine Ball Valve With PTFE Seals for Seawater Systems DN15 to DN80NegotiableMOQ: 1 Unit -
CB/T3191 Standard Bronze Ball Valve DN50 PN2.5MPa With Mill Test ReportNegotiableMOQ: 1 Unit
-
Threaded Connection CB/T3191 Bronze Ball Valve PN1.6MPa Marine Grade for Ship PipingNegotiableMOQ: 1 Unit
-
Full Port CB/T3191 Bronze Marine Valve DN80 for High Flow Seawater ApplicationsNegotiableMOQ: 1 Unit
-
CB/T3191 Bronze Ball Valve for Bilge Pump Control and Ballast System PipingNegotiableMOQ: 1 Unit
As a professional valve manufacturer with ISO9001:2015 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for the demanding marine and offshore industries. Our CB/T3191 Marine Ball Valve is engineered to meet the rigorous standards of shipbuilding and offshore platform applications, ensuring reliable operation in corrosive saltwater environments. Each valve is supplied with a comprehensive Mill Test Report (MTR) that details material composition and mechanical properties, providing full traceability and peace of mind. Backed by a solid warranty and supported by our global distribution network spanning North America, Europe, Asia, and beyond, we deliver valves that combine durability, safety, and long-term value for your critical marine systems.
The CB/T3191 standard specifies the technical requirements for marine flanged ball valves, and our product range fully complies with these specifications. We understand that marine applications require components that can withstand constant vibration, temperature fluctuations, and exposure to seawater. Therefore, we focus on several critical design and manufacturing aspects:
- Superior Corrosion Resistance: We offer a selection of materials specifically chosen for marine service. Common body materials include CF8M (316 Stainless Steel) for general seawater, Duplex Steel (UNS S31803/S32205) for highly corrosive and high-pressure applications, and Bronze (C95800) for specific seawater services. All materials are certified with Mill Test Reports.
- Robust Seal Integrity: The sealing system is paramount. We utilize advanced seat materials like Reinforced PTFE (RPTFE) and PPL (Para-Poly-Phenylene) for excellent chemical resistance and low friction. For fire-safe applications, metal-seated designs with secondary soft seals are available.
- Reliable Operation Under Pressure: The valves are designed for full-port or standard-port flow with minimal pressure drop. The stem is designed with an anti-blowout feature and is sealed with multiple sets of packing rings to prevent leakage to the atmosphere, a critical safety feature on ships.
- Versatile Actuation Options: To suit various automation needs on vessels, our ball valves can be fitted with manual levers, gear operators, pneumatic actuators, or electric actuators. The design allows for easy retrofitting of actuators in the field if required.
- Extended Service Life: Features like chrome-plated balls for reduced friction and wear, and reinforced body structures contribute to a longer maintenance cycle, reducing total cost of ownership for ship operators.
The technical specifications of our CB/T3191 Marine Ball Valves are detailed below. Please note that specific configurations can be customized upon request.
| Design & Manufacturing Standard | CB/T3191, GB/T12237, API 608, ISO 17292 |
| Pressure-Temperature Rating | PN16, PN25, PN40; Class150, Class300 (Other ratings available) |
| Size Range (Flanged) | DN15 (1/2") to DN500 (20") |
| End Connection | RF (Raised Face) Flange per JIS, ANSI, DIN, GB standards. Threaded ends (NPT, BSP) for smaller sizes. |
| Temperature Range | -29°C to +200°C (Standard Soft Seat). Higher/lower ranges with special seat materials. |
| Fire Safe Design | Optional, compliant with API 607/ISO 10497 standards. |
| Testing & Inspection | 100% Hydrostatic Shell Test, Seat Leak Test (Air or Water), Material Chemical & Mechanical Test per MTR. |
Choosing our marine ball valves brings tangible benefits to shipbuilders, repair yards, and vessel operators:
- Enhanced System Reliability: Reduces the risk of in-service failures, which can lead to costly downtime and safety hazards at sea.
- Simplified Procurement & Compliance: The provided Mill Test Report serves as essential documentation for class society approvals (e.g., ABS, DNV, LR, BV) and simplifies the material certification process.
- Reduced Maintenance Costs: The durable construction and corrosion-resistant materials extend service intervals, lowering long-term operational expenses.
- Global Supply Chain Support: With established export channels and experience shipping to major global markets from ports like Shanghai, Guangzhou, and Hong Kong, we ensure timely delivery to your project location.
Trust is built on proven performance and reliable documentation. Since our establishment in 2016, Shanghai Zhibang has consistently supplied valves for marine projects worldwide, supported by our ISO9001 quality management system. Our annual export value reflects the confidence that international clients place in our products. The combination of the CB/T3191 compliant design, full material traceability via the Mill Test Report, and a clear warranty provides a complete, low-risk solution for your marine piping needs. We invite you to contact us with your specific project requirements—whether for newbuilding or retrofit—and let our team provide you with a competitive quotation and detailed technical support.
Frequently Asked Questions (FAQ)
Q1: What is included in the Mill Test Report (MTR) provided with the valve?
A1: The MTR is a certified document from the material mill. It typically includes the heat number/heat code, chemical composition analysis, mechanical property test results (yield strength, tensile strength, elongation), and heat treatment records. This ensures the raw materials meet the specified grades (e.g., AISI 316, CF8M).
Q2: Are your CB/T3191 valves accepted by international marine classification societies?
A2: Yes. While CB/T is a Chinese standard, the technical requirements for materials, design, pressure, and testing are aligned with international norms. Coupled with the complete MTR documentation, our valves are commonly submitted for approval by societies such as ABS, DNV, BV, LR, and others. Specific approval should be confirmed for your project.
Q3: What is the typical lead time for these marine ball valves?
A3: Lead time depends on size, material, and quantity. Standard configurations in common materials may have shorter lead times. For large orders or special materials like duplex steel, please inquire for a specific production schedule. Our multiple shipment ports help optimize logistics.
Q4: Can you provide valves with different flange standards (e.g., ANSI, JIS, DIN) on the same order?
A4: Absolutely. We regularly manufacture valves to match various piping standards. You can specify the flange standard (like ANSI B16.5, JIS B2220, DIN EN 1092-1) and pressure class required for each valve in your order.
Q5: What does the warranty cover, and how long is it?
A5: Our standard warranty covers defects in material and workmanship under normal use and service conditions as specified. The warranty period is typically 12 to 24 months from the date of shipment. The specific terms will be detailed in the warranty certificate provided with the product.
Q6: Do you offer fire-safe (fire-tested) versions of this marine ball valve?
A6: Yes, fire-safe design is an available option. These valves incorporate features like secondary metal seals to maintain a seal in the event a fire destroys the primary soft seats. They can be manufactured to meet API 607 or ISO 10497 test standards upon request.
Q7: What actuation options are available, and can they be installed later?
A7: We offer manual (lever or gear), pneumatic, and electric actuation. Our valve design is actuator-ready, meaning it has a standardized mounting interface (typically ISO 5211). Actuators can be factory-mounted or supplied separately for field installation, offering flexibility.
Q8: How do you ensure protection against corrosion during sea transit and storage?
A8: Valves are thoroughly cleaned, dried, and preserved before packing. Internal cavities and external surfaces are coated with a suitable rust preventive. Openings are sealed with plastic caps or plugs. We use robust export packaging (wooden crates or plywood boxes) suitable for long-distance ocean freight.
Send Inquiry to This Supplier
You May Also Like
-
CB/T3191 Bronze Marine Ball Valve for Seawater Cooling Line Isolation on VesselsNegotiableMOQ: 1 Unit
-
CB/T3191 Bronze Marine Ball Valve With Locking Handle for Secure Offshore OperationNegotiableMOQ: 1 Unit
-
CB/T3191 Bronze Marine Ball Valve With One-Year Warranty Against CorrosionNegotiableMOQ: 1 Unit
-
CB/T3191 Bronze Marine Ball Valve Supplied With Installation Guide and Technical SupportNegotiableMOQ: 1 Unit
-
CB/T3191 Bronze Ball Valve DN25 PN4.0MPa for High Pressure Deck Washdown SystemsNegotiableMOQ: 1 Unit
-
CB/T3191 Standard Flanged Marine Valve With Extended Stem for Insulated PipelinesNegotiableMOQ: 1 Unit
-
CB/T3191 Standard Marine Flanged Ball Valve in Cast Steel, Full Bore DN50-DN200, PN16NegotiableMOQ: 1 Unit
-
Pneumatic Actuated Marine Ball Valve CB/T3191, DN15-DN200, 1.6-6.4MPa Pressure RatingNegotiableMOQ: 1 Unit
-
Marine Ball Valve With Mill Test Report, CB/T3191 Compliant, Cast Steel Body and Full PortNegotiableMOQ: 1 Unit
-
CB/T3191 Flanged Ball Valve for Ship Ballast Systems, Cast Steel Body, PN25 RatingNegotiableMOQ: 1 Unit
