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Help Center304 Stainless Steel CB/T3191-92 High Pressure Ball Valve for Marine
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Shanghai Zhibang Valve Manufacture Co., Ltd. is a specialized manufacturer of high-quality marine valves, established in 2016 with an annual export value of US$1–1.5 million. Our 304 Stainless Steel CB/T3191-92 High Pressure Ball Valve for Marine is engineered to meet the rigorous demands of shipbuilding and offshore applications. Crafted from premium 304 stainless steel, this valve offers exceptional corrosion resistance, durability, and reliable performance under extreme pressure conditions, making it an ideal choice for ballast systems, fuel oil lines, and hydraulic circuits on vessels.
Designed strictly in accordance with the Chinese standard CB/T3191-92, this ball valve ensures full compliance with marine industry specifications. It features a robust forged body, blow-out-proof stem, and PTFE or reinforced PTFE seats that provide bubble-tight shut-off even after repeated cycles. The quarter-turn operation reduces wear and allows quick on/off control, while the low torque handle design facilitates easy manual operation in confined spaces. Every valve is factory-tested for shell and seat leakage, guaranteeing zero defects before shipment.
Key Technical Specifications
| Parameter | Value / Description |
| Material | 304 Stainless Steel (body, ball, stem) |
| Design Standard | CB/T3191-92 |
| Pressure Rating | High Pressure (up to 10.0 MPa, customizable) |
| Size Range | DN15 – DN150 (1/2" – 6") |
| Connection Type | Threaded (NPT/BSP) or Flanged (optional) |
| Seat Material | PTFE / Reinforced PTFE |
| Operating Temperature | -20°C to +180°C (depending on seat) |
| Applicable Media | Water, oil, gas, hydraulic fluids, seawater |
| Certification | ISO9001:2015 |
Product Advantages & Customer Benefits
- Superior Corrosion Resistance: 304 stainless steel withstands seawater, moisture, and aggressive chemicals, extending service life in marine environments.
- High Pressure Capability: Designed for heavy-duty applications (up to 10.0 MPa), ensuring safe operation in hydraulic and fuel systems.
- Bubble-Tight Shut-Off: Precision-machined ball and PTFE seats provide zero leakage, meeting stringent marine safety standards.
- Low Torque Operation: Smooth quarter-turn mechanism reduces manual effort and allows easy integration with actuators.
- Full Compliance: Manufactured per CB/T3191-92, recognized by Chinese shipbuilding authorities and classification societies.
- Customizable Options: Available in various sizes, connection types, and pressure ratings to fit specific piping layouts.
- Rigorous Quality Control: Each valve undergoes hydrostatic shell test (1.5x rated pressure) and pneumatic seat test (1.1x rated pressure).
- Low Maintenance: Self-lubricating PTFE seats and blow-out-proof stem design minimize wear and reduce downtime.
Whether you are refitting an existing vessel or building a new ship, this ball valve offers a reliable, cost-effective solution for critical flow control tasks. Its compact design saves space, and the standardized flange dimensions make installation straightforward. With our ISO9001 certified production facility, every batch is traceable and backed by consistent quality assurance.
Frequently Asked Questions (FAQ)
-
Q: What is the material of the ball and stem?
A: Both the ball and stem are made of 304 stainless steel, ensuring excellent corrosion resistance and mechanical strength. The seat is PTFE or reinforced PTFE. -
Q: What pressure ratings are available?
A: Our standard high-pressure rating is up to 10.0 MPa (100 bar). Custom pressure ratings can be manufactured upon request to meet specific system requirements. -
Q: Can this valve be used for seawater?
A: Yes, 304 stainless steel is suitable for seawater applications. However, for prolonged exposure to highly saline environments, we recommend 316 stainless steel as an alternative option. -
Q: Does your product have any marine classification approvals?
A: The valve is designed to meet CB/T3191-92, which is recognized by major Chinese classification societies. For specific class approvals (e.g., CCS, DNV, BV), please contact us for customized solutions. -
Q: What connection types are offered?
A: We offer threaded (NPT/BSP) and flanged (ANSI, DIN, JIS) connections. The flanged option is most common for marine piping systems. Please specify your requirement when ordering. -
Q: What is the typical lead time?
A: For standard sizes and materials, lead time is 15–25 working days. Custom orders may require 30–45 days. We ship from Shanghai, Guangzhou, Hong Kong, or Beijing. -
Q: How is the valve tested before shipment?
A: Every valve undergoes a hydrostatic shell test at 1.5 times the rated pressure and a pneumatic seat test at 1.1 times the rated pressure. Test reports are available upon request. -
Q: Do you provide a warranty?
A: Yes, we offer a 12-month warranty from the date of shipment against manufacturing defects. Extended warranty options are available for bulk orders.
As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve has been exporting to markets across North America, South America, Europe, Southeast Asia, Africa, and Oceania since 2016. Our annual export value of US$1–1.5 million is a testament to the trust our global customers place in our products. We are committed to delivering high-quality marine valves that meet your exact specifications, with competitive pricing and reliable after-sales support. Contact us today for a quote or technical consultation – let us help you secure the perfect flow control solution for your marine project.
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