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Help CenterDN200 Marine Ball Valve for Desulfurization Tower Installation, Flanged Connection
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As a professional manufacturer with a strong foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance industrial valves for critical applications worldwide. Our DN200 Marine Ball Valve is engineered specifically for the demanding environment of desulfurization tower installations onboard vessels and offshore platforms. This valve offers reliable shut-off and control for flue gas treatment systems, ensuring operational safety and environmental compliance in marine scrubber applications. With an annual export value reflecting our global reach, we understand the stringent requirements of the maritime industry and deliver products that meet those challenges head-on.
The core value of this valve lies in its robust construction and application-specific design. It is built to handle the corrosive and abrasive media often present in desulfurization processes, such as seawater slurry and treated flue gas. The flanged connection ensures a secure, leak-proof integration into the piping system, which is crucial for maintaining system integrity under variable pressure and thermal conditions.
Key Product Features & Technical Specifications:
- Superior Sealing Performance: Utilizes advanced seat materials like reinforced PTFE (RPTFE) or metal seats for tight shut-off, even after prolonged exposure to process media. The design minimizes fugitive emissions.
- Robust Construction for Marine Use: The valve body is typically constructed from carbon steel with corrosion-resistant coatings (e.g., epoxy) or stainless steel (CF8M/316) for enhanced durability against saltwater and chemical exposure.
- Easy Operation and Maintenance: Features a low-torque design. Can be equipped with a standard lever, manual gearbox, or automated actuators (pneumatic/electric) for remote operation, which is essential for hard-to-reach locations on a ship.
- Fire-Safe Design Available: Optional fire-safe design in accordance with API 607/API 6FA standards, where the seat materials provide a secondary metal-to-metal seal in case of fire.
- Full Port or Reduced Port: Available in full bore (full port) design to minimize pressure drop across the valve, which is critical for efficient system flow in desulfurization circuits.
Below is a summary of typical specifications for the DN200 Marine Ball Valve:
| Parameter | Specification / Option |
| Size (Nominal Diameter) | DN200 (8") |
| Pressure Rating | PN16, PN25, Class 150, Class 300 |
| Connection Standard | Flanged per ANSI B16.5, EN 1092-1, JIS B2220 |
| Body Material (Common) | WCB (Carbon Steel), CF8 (304 SS), CF8M (316 SS) |
| Ball & Stem Material | Stainless Steel (304/316/17-4PH) with optional coatings |
| Seat Material | PTFE, RPTFE, PCTFE, PEEK, Metal (Inconel/Stellite) |
| Operating Temperature | Standard: -20°C to 200°C; Extended ranges available |
| Actuation | Manual Lever, Gear Operator, Pneumatic Actuator, Electric Actuator |
Benefits for Your Desulfurization System:
- Enhanced System Reliability: Reduces unplanned downtime by providing a dependable sealing solution in a critical part of the exhaust gas cleaning system (EGCS).
- Compliance Support: Helps vessel operators meet IMO (International Maritime Organization) MARPOL Annex VI regulations for sulfur oxide emissions by ensuring the reliable operation of the scrubber system.
- Long Service Life & Low Maintenance: The selection of corrosion-resistant materials and robust design reduces wear and tear, leading to lower total cost of ownership over the valve's lifecycle.
- Operational Flexibility: The availability of various actuation methods allows for integration into automated control systems, improving operational efficiency and safety.
- Global Compatibility: Flanged design per international standards ensures easy replacement and compatibility with existing piping on vessels and in shipyards worldwide.
Shanghai Zhibang Valve backs its products with a commitment to quality, demonstrated by our ISO9001 certification. Our valves are trusted in diverse markets across North America, South America, Europe, Asia, Africa, and Oceania, shipped efficiently from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing. This DN200 Marine Ball Valve is not just a component; it's a critical investment in the operational integrity and environmental compliance of your marine desulfurization system. We invite you to contact us for a detailed quotation, technical drawings, or to discuss customizing this valve to your project's exact specifications. Let our manufacturing expertise provide the reliable valve solution your application requires.
Frequently Asked Questions (FAQ)
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Q: Is this valve suitable for handling seawater in an open-loop scrubber system?
A: Yes, it is designed for such applications. We recommend specifying materials like 316 stainless steel or carbon steel with suitable internal and external epoxy coatings to resist corrosion from seawater and the abrasive slurry. -
Q: Can you provide valves with specific flange face types (RF, FF, RTJ) and standards?
A: Absolutely. We can manufacture the valve with Raised Face (RF), Flat Face (FF), or Ring Type Joint (RTJ) flanges according to ANSI, DIN, JIS, or other international standards as required by your piping specifications. -
Q: What is the typical delivery lead time for a DN200 valve?
A: For standard material configurations, the lead time is generally 4-6 weeks. Customized orders (special materials, actuators, coatings) may require additional time, which we will confirm upon order review. -
Q: Do you offer actuated versions of this valve for remote control?
A: Yes, we can supply the valve pre-assembled with pneumatic (double-acting or spring-return) or electric actuators from reputable brands. We ensure proper mounting and torque setting for reliable operation. -
Q: How does the valve perform in high-temperature flue gas streams before the scrubber?
A: For high-temperature applications, we offer options with high-performance seat materials like metal seats (e.g., Stellite-faced) or advanced polymers like PEEK, which can withstand temperatures significantly higher than standard PTFE. -
Q: Are spare parts like seals and seats available for long-term maintenance?
A: Yes, we maintain an inventory of critical spare parts and can provide maintenance kits. We recommend keeping a set of spare seals for critical valves to minimize downtime during planned maintenance. -
Q: What documentation is provided with the valve?
A: Standard documentation includes a material test certificate (MTC/EN 10204 3.1), dimensional drawing, pressure test certificate, and operation manual. Additional certifications like NACE MR0175 can be provided upon request. -
Q: Can the valve be used in other marine applications besides desulfurization towers?
A: While optimized for scrubber service, its robust marine-grade construction makes it suitable for other shipboard services handling seawater, ballast, fuel oil (with appropriate material selection), or general utility lines.
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