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Home > Industrial Equipment & Components > Valve > Butterfly Valve > CB/T3191 Duplex Stainless Steel Ball Valve With PTFE Seats, Full Port Design DN50 PN16
CB/T3191 Duplex Stainless Steel Ball Valve With PTFE Seats, Full Port Design DN50 PN16
Product Spotlights
Engineered for demanding industrial applications, this CB/T3191 standard ball valve features duplex stainless steel for exceptional corrosion and strength resistance, PTFE seats for reliable low-friction sealing, and a full port DN50 design to minimize flow restriction. With a PN16 pressure rating and flanged connections, it ensures durable performance, long service life, and efficient fluid control in chemical, marine, and oil & gas systems.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T3191
Application:
Other, Industrial Fluid Control Systems
Material:
Duplex Stainless Steel (Body/Ball)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
CB/T3191
Application
Other, Industrial Fluid Control Systems
Material
Duplex Stainless Steel (Body/Ball)
Seat Material
PTFE (Polytetrafluoroethylene)
Port Design
Full Port
Size
DN50 (Nominal Diameter)
Pressure Rating
PN16
Connection Type
Flanged (Standard)
Operation
Manual (Lever/Handwheel)
Temperature Range
Customizable based on media
As a professional manufacturer, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance industrial valves, including our CB/T3191 Duplex Stainless Steel Ball Valve with PTFE Seats. Established in 2016 and backed by ISO9001 quality management certification, we combine rigorous manufacturing standards with extensive export experience, serving markets globally from North America to Southeast Asia. This DN50 PN16 full port valve is engineered for demanding applications where corrosion resistance, reliable sealing, and minimal flow restriction are paramount. It represents a robust solution for industries requiring durable and efficient fluid control.
This valve is designed to offer superior performance in challenging environments. Below are its key characteristics and advantages:
- Exceptional Corrosion and Stress Resistance: The duplex stainless steel construction provides a high strength-to-weight ratio and outstanding resistance to chloride-induced corrosion and stress corrosion cracking, making it suitable for seawater, chemical, and offshore applications.
- Low-Friction, Durable Sealing: The PTFE (Polytetrafluoroethylene) seats ensure a tight seal with very low friction during operation, enhancing longevity and reducing wear on the ball and stem components.
- Full Port Design for Efficient Flow: The full port (full bore) design means the bore diameter matches the pipeline's nominal diameter (DN50), minimizing pressure drop and turbulence, allowing for nearly unrestricted flow, which is critical for processes requiring high volume or sensitive media.
- Standardized Compliance: Manufactured according to the CB/T3191 standard, this valve meets specific Chinese technical requirements for marine and industrial valves, ensuring dimensional consistency, performance benchmarks, and interchangeability.
- Robust Pressure Handling: With a pressure rating of PN16 (approximately 16 bar), it is capable of handling moderate to high-pressure systems common in industrial piping.
- Versatile Connection and Operation: Typically furnished with flanged connections for secure pipeline integration, it is operated manually via a lever or handwheel, offering straightforward control.
The technical specifications of this valve are detailed in the following table:
| Parameter | Specification |
| Product Standard | CB/T3191 |
| Nominal Size (DN) | 50 |
| Pressure Rating (PN) | 16 |
| Port Type | Full Port (Full Bore) |
| Body & Ball Material | Duplex Stainless Steel |
| Seat Material | PTFE |
| Connection Type | Flanged (Standard) |
| Operation Type | Manual (Lever/Handwheel) |
| Typical Applications | Marine Systems, Chemical Processing, Oil & Gas, Water Treatment, Power Plants |
Choosing this valve brings concrete benefits to your operations:
- Long Service Life: The corrosion-resistant duplex steel and wear-resistant PTFE seats significantly reduce maintenance needs and extend valve lifespan, lowering long-term replacement costs.
- Process Efficiency: The full port design maintains system pressure and flow rate, improving the efficiency of pumping systems and reducing energy consumption.
- Reliable Shut-off: The combination of a precision-machined ball and PTFE seats guarantees a bubble-tight seal when closed, preventing leakage and ensuring process safety and environmental protection.
- Broad Compatibility: Suitable for a wide range of media, including corrosive chemicals, seawater, oils, and gases, due to its material properties.
- Easy Installation and Operation: Standard flanged ends facilitate integration into existing piping, and manual operation provides simple, direct control without need for complex actuators.
Shanghai Zhibang Valve Manufacture Co., Ltd. stands behind this product with a commitment to quality evidenced by our ISO9001 certification. Since 2016, we have built a strong reputation, exporting valves worth between US$1 Million to US$1.5 Million annually to diverse markets including North America, Eastern Europe, Southeast Asia, and Africa. Our products are shipped from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, ensuring reliable logistics. This CB/T3191 Duplex Stainless Steel Ball Valve is a testament to our focus on manufacturing valves that meet stringent industrial demands. For a durable, efficient, and reliable solution for your fluid control systems, contact us for more details or to discuss your specific requirements.
Frequently Asked Questions (FAQ):
-
Q: What is the main advantage of using duplex stainless steel instead of standard stainless steel for this ball valve?
A: Duplex stainless steel offers a combination of higher strength and superior corrosion resistance, particularly against chloride-induced stress corrosion cracking. This makes it more suitable for aggressive environments like seawater or chemical processing, where standard austenitic stainless steels might fail. -
Q: Why are PTFE seats used in this valve?
A: PTFE provides excellent chemical resistance, a low coefficient of friction, and good sealing properties. It ensures smooth valve operation, reduces wear, and maintains a tight seal over many cycles, even with abrasive or corrosive media. -
Q: What does "Full Port" or "Full Bore" design mean, and what are its benefits?
A: A full port valve has an internal bore diameter equal to the nominal pipe diameter (DN50 in this case). This design minimizes flow resistance and pressure drop across the valve, allowing for higher flow rates and reducing turbulence, which is beneficial for systems requiring maximum flow or handling slurries or sensitive fluids. -
Q: Can this DN50 PN16 valve be used for higher pressure applications?
A: The PN16 rating indicates a nominal pressure rating of 16 bar. It is designed for systems operating within this range. For higher pressures, valves with corresponding higher pressure ratings (e.g., PN25, PN40) would be required. Always match the valve's pressure rating to your system's maximum working pressure. -
Q: Is this valve suitable for high-temperature services?
A: While duplex stainless steel can withstand elevated temperatures, the PTFE seats have a limited temperature range. The operational temperature limit depends primarily on the seat material. For high-temperature applications, alternative seat materials (like reinforced PTFE or metal seats) may be available upon request or customization. -
Q: What types of connections are available?
A: This valve is typically supplied with flanged ends according to relevant standards (like ASME/ANSI or DIN), which is common for DN50 size. Other connection types, such as threaded, might be customizable based on specific order requirements. -
Q: Does the CB/T3191 standard imply any specific testing or quality requirements?
A: Yes, CB/T3191 is a Chinese technical standard primarily for marine valves. It specifies requirements for materials, dimensions, pressure testing, performance, and marking, ensuring the valve meets defined quality and safety benchmarks for industrial and marine use. -
Q: Can I request a different valve size or pressure rating?
A: Absolutely. As a manufacturer, we offer a range of sizes and pressure ratings. While this specific listing is for DN50 PN16, other sizes (DN15 to DN200) and pressure classes (PN10, PN25, PN40, etc.) can be produced. Please contact us with your detailed requirements.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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