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DN50 Duplex Stainless Steel Ball Valve for Ship Desulfurization, Acidic Flue Gas Resistant
Product Spotlights
DN50 ball valve crafted from corrosion-resistant Duplex Stainless Steel, specifically engineered for harsh marine desulfurization systems. Handles acidic flue gas and slurry with high strength, bubble-tight sealing, and optional automation. Offers durability, low maintenance, and compliance with international standards for reliable shipboard operation.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Duplex Stainless Steel (e.g., UNS S31803/S32205)
Application:
Other, Ship Exhaust Gas Cleaning (EGC) Systems
Connection Type:
Flanged (e.g., ANSI B16.5, DIN)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Duplex Stainless Steel (e.g., UNS S31803/S32205)
Application
Other, Ship Exhaust Gas Cleaning (EGC) Systems
Connection Type
Flanged (e.g., ANSI B16.5, DIN)
Nominal Diameter (DN)
50
Pressure Rating (PN)
16, 25, 40, 64 (Customizable)
Seat Material
PTFE, RPTFE, PPL, Metal (Optional)
Operating Temperature
-20°C to +200°C (varies with seat)
Operation Type
Lever, Gearbox, Pneumatic, Electric Actuator
End Connection Standard
ANSI, DIN, JIS, GB (Available)
Design Standard
API 608, API 6D, ISO 17292
As a leading manufacturer with ISO 9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable industrial valve solutions. Our DN50 Duplex Stainless Steel Ball Valve is engineered specifically for the demanding environments of marine exhaust gas cleaning (EGC) and desulfurization systems. This valve is designed to withstand the corrosive attack of acidic flue gases, offering shipbuilders and system integrators a durable and high-performance sealing solution that ensures long-term operational integrity and minimal maintenance.
Constructed from premium-grade Duplex Stainless Steel, this valve combines high strength with exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, which are common challenges in wet flue gas desulfurization (FGD) and scrubber systems on ships. The unique metallurgical structure of duplex steel provides superior performance compared to standard austenitic stainless steels, making it an ideal choice for handling aggressive media containing chlorides, sulfides, and other acidic compounds.
Key Features & Technical Advantages:
- Superior Corrosion Resistance: The duplex stainless steel body offers excellent resistance to acidic flue gases, seawater, and scrubber slurry, significantly extending service life in harsh marine environments.
- High Strength & Durability: Possesses approximately twice the yield strength of standard 316 stainless steel, allowing for a more compact and lightweight design without compromising pressure integrity.
- Bubble-Tight Sealing: Features precision-machined ball and seat assemblies. Multiple seat material options (PTFE, RPTFE, PPL, metal) are available to match specific temperature, pressure, and chemical compatibility requirements.
- Versatile Actuation: Can be supplied as a manual valve with a lever or gear operator, or configured for automated control with pneumatic or electric actuators, facilitating integration into shipboard control systems.
- Low Maintenance Design: The stem sealing system is designed for easy adjustment and long-term reliability, reducing downtime and total cost of ownership.
- Full Port Design (Optional): Minimizes pressure drop and allows for efficient flow of slurry and gases, which is critical for the efficiency of the desulfurization process.
Technical Specifications:
| Parameter | Specification |
| Size (DN) | 50 |
| Pressure Rating | PN16, PN25, PN40, PN64 (Class 150, 300, 600) |
| Body Material | Duplex Stainless Steel (UNS S31803/S32205) |
| Ball & Stem Material | Duplex Stainless Steel or SS316 |
| Seat Material | PTFE, Reinforced PTFE, PPL, Metal (Selectable) |
| Temperature Range | -20°C to +200°C (dependent on seat material) |
| End Connection | Flanged (RF, RTJ), Threaded (NPT, BSP) |
| Fire Safe Design | Available upon request (API 607/API 6FA) |
Benefits for Your Marine Application:
- Enhanced System Reliability: Reduces the risk of unplanned valve failure in critical scrubber loops, ensuring continuous compliance with emission regulations (e.g., IMO 2020).
- Cost-Effective Operation: The extended lifespan and reduced maintenance frequency lower the total lifecycle cost compared to valves made from less resistant materials.
- Design Flexibility: Customizable options for pressure rating, end connections, and actuation allow for perfect integration into new builds or retrofit projects.
- Global Compliance: Manufactured to international standards, facilitating installation and approval processes for ships operating worldwide.
Backed by our ISO 9001 certified manufacturing processes and an annual export value reflecting our global reach across North America, Europe, Asia, and beyond, Shanghai Zhibang Valve stands as a trusted partner for marine equipment. We ship efficiently from major Chinese ports like Shanghai and Guangzhou. Choosing our DN50 Duplex Stainless Steel Ball Valve means investing in a component built for resilience, designed for performance, and supported by a manufacturer committed to quality. Contact us today to discuss your specific requirements for ship desulfurization systems and receive a competitive quotation.
Frequently Asked Questions (FAQ):
-
Q: Why is Duplex Stainless Steel specifically recommended for ship desulfurization applications?
A: Duplex stainless steel offers an optimal balance of high strength and superior corrosion resistance, particularly against chlorides and acidic environments present in scrubber slurry and flue gas. This makes it more durable than standard 316 stainless steel in these harsh conditions. -
Q: Can this valve handle both the slurry and the acidic gas phases in a scrubber system?
A: Yes, it is designed for such multiphase flow. The material resistance and sealing design are suitable for handling abrasive slurry in the scrubber loop as well as the corrosive acidic gases, depending on the selected seat material for optimal performance. -
Q: What are the available actuation options for remote operation?
A: For automated control, the valve can be equipped with pneumatic (double-acting or spring-return) or electric actuators. We can provide the complete assembled package ready for installation and connection to your ship's control system. -
Q: Is the DN50 size suitable for main scrubber inlet/outlet lines?
A: DN50 is a common size for various auxiliary, bypass, and sampling lines within a marine EGC system. For main process lines, larger sizes are typically used. We can manufacture duplex steel ball valves in a full range of sizes upon request. -
Q: How does the fire-safe option work, and is it necessary for this application?
A: A fire-safe design includes secondary metal seals that engage if the primary soft seals (like PTFE) are damaged by fire, preventing catastrophic leakage. While not always mandatory for all scrubber lines, it is a critical safety feature for certain classified areas on a vessel and is available as an option. -
Q: What flange standards do you offer?
A: We can supply valves with flanges conforming to ANSI B16.5, DIN, JIS, GB, and other international standards to match your existing pipeline specifications. Please specify your required standard when inquiring. -
Q: What is the typical lead time for an order of these valves?
A: Lead time varies based on order quantity, customization (actuation, special testing), and current production schedule. Standard configured valves typically have a shorter lead time. We provide accurate delivery estimates with every quotation. -
Q: Do you provide documentation and certification with the valves?
A> Yes. Along with the ISO 9001 certificate of our company, we can provide material test certificates (MTC), pressure test reports, and other documentation as required for marine classification society approvals.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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