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Help CenterCB/T3191 304 Stainless Steel Marine Ball Valve, DN15-DN100, PN1.6MPa Flanged End
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As a leading manufacturer specializing in industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T3191 304 Stainless Steel Marine Ball Valve. Engineered for demanding marine environments, this valve series combines the corrosion resistance of 304 stainless steel with a robust flanged design, ensuring reliable performance in critical shipboard piping systems. With over seven years of manufacturing expertise and a global export footprint, we deliver valves that meet stringent marine standards, providing shipbuilders and marine engineers with a durable and cost-effective flow control solution.
This valve series is designed to offer superior performance and longevity in saltwater and other harsh marine conditions. Key features and benefits include:
- Superior Corrosion Resistance: Constructed from high-grade 304 stainless steel, the valve body, ball, and stem offer excellent resistance to seawater corrosion, pitting, and crevice attack, significantly extending service life compared to carbon steel alternatives.
- Robust Flanged Connection: The flanged ends conform to standard dimensions, ensuring a secure, leak-proof connection to pipeline systems. This design facilitates easier installation, maintenance, and replacement.
- Reliable Sealing Performance: Equipped with advanced PTFE (Polytetrafluoroethylene) seats and seals (optional), the valve provides a bubble-tight shut-off, even after numerous cycles, minimizing the risk of fluid leakage in vital systems.
- Full Port Design: The full bore design minimizes pressure drop across the valve, allowing for efficient fluid flow and reducing pumping energy costs, which is crucial for large-scale marine applications.
- Easy Operation and Low Maintenance: The standard manual lever handle allows for quick 90-degree operation to open or close the valve. The simple, robust construction requires minimal maintenance, reducing downtime and operational costs.
- Versatile Application: Suitable for a wide range of onboard services including ballast systems, bilge lines, cooling water, fuel oil transfer (with appropriate material verification), freshwater systems, and general service pipelines.
The technical specifications for the CB/T3191 Marine Ball Valve series are detailed below. Please note that specific configurations like seat materials or extended temperature ranges are customizable upon request.
| Parameter | Specification / Value |
|---|---|
| Product Standard | CB/T3191 (China Shipbuilding Standard) |
| Body Material | 304 Stainless Steel (CF8) |
| Ball & Stem Material | 304 Stainless Steel |
| Seat & Seal Material | PTFE (Standard), other materials like RPTFE, Nylon available |
| Connection Type | Flanged End (RF Raised Face) |
| Size Range (Nominal Diameter) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100 |
| Pressure Rating | PN1.6MPa (Class 150) |
| Temperature Range | Standard: -20°C to 150°C. Extended range up to 180°C optional. |
| Operation | Manual Lever Handle (Lockable handle optional) |
| Flow Characteristic | Full Port (Full Bore) |
Choosing our marine ball valve provides tangible benefits for your projects. The long-term corrosion resistance translates to lower lifecycle costs by reducing replacement frequency. The standard-compliant flanged design ensures compatibility and simplifies procurement and installation logistics. Furthermore, the valve's reliable sealing enhances system safety and environmental protection, a critical factor in marine operations.
Shanghai Zhibang Valve Manufacture Co., Ltd. stands behind the quality of every valve we produce. Our operations are certified under the ISO9001 Quality Management System, ensuring consistent manufacturing standards. With an annual export value ranging from US$1 Million to US$1.5 Million, our products have gained the trust of clients across diverse markets including North America, Eastern Europe, Southeast Asia, and the Middle East. We ship efficiently from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring timely delivery. For your next marine or industrial project requiring dependable, standards-compliant valves, contact us to discuss your specific requirements or request a sample.
Frequently Asked Questions (FAQ)
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Q: What does the "CB/T3191" standard signify for this valve?
A: CB/T3191 is a Chinese national standard specifically for marine valves. It defines the design, material, manufacturing, testing, and inspection requirements to ensure the valve's suitability and safety for marine applications, offering assurance of quality and performance in shipboard environments. -
Q: Is 304 stainless steel suitable for full immersion in seawater?
A: While 304 stainless steel offers good general corrosion resistance, for prolonged full immersion in seawater or highly chlorinated environments, 316 or 316L stainless steel is often recommended for superior pitting resistance. For many marine piping applications (e.g., internal ship systems, treated water), 304 is a cost-effective and reliable choice. Material selection should be based on the specific fluid media and service conditions. -
Q: Can this valve be used for fuel oil or chemical services?
A: The 304 stainless steel body is compatible with many fluids. However, the suitability for specific chemicals or fuels depends on the seat and seal material (e.g., PTFE). It is crucial to verify the chemical compatibility of all wetted parts with the intended media. We can advise on or provide alternative sealing materials upon request. -
Q: Are the flanges drilled according to specific standards?
A: Yes. The flanged ends are typically manufactured to match common international flange standards such as ANSI B16.5 or JIS B2220 for the corresponding pressure class (PN1.6MPa/Class 150). Please specify your required flange standard when inquiring or ordering to ensure perfect compatibility. -
Q: What is the lead time for an order of DN50 valves?
A: Lead times vary based on order quantity and current production schedule. For standard DN50 valves from our inventory, shipment can often be arranged quickly. For larger or customized orders, typical production lead time is 4-6 weeks. We provide specific timelines with every quotation. -
Q: Do you offer actuated versions (electric or pneumatic) of this ball valve?
A: Yes. While the standard product is manually operated, we can fit this valve series with electric actuators or pneumatic actuators for remote or automated control systems. Please provide your actuation requirements (torque, voltage, signal type) for a tailored solution. -
Q: What testing is performed on these valves before shipment?
A: Each valve undergoes a series of tests, which typically include a hydrostatic shell test (at 1.5 times the rated pressure) and a seat leakage test per applicable standards. Testing certificates can be provided upon request. Our ISO9001 certification governs our entire quality control process. -
Q: What are the packaging options for export?
A: Valves are typically packed in individual cardboard boxes or wooden crates for optimal protection during ocean freight. Export-standard seaworthy packaging is used to prevent corrosion and damage. Packaging can be customized based on customer needs and shipment method.
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