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Help CenterShip Desulfurization Tower Check Valve, Dual Plate Non-Slam, Duplex Steel, DN50-DN200, PN10-PN40
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We are Shanghai Zhibang Valve Manufacture Co., Ltd., a professional valve manufacturer established in 2016 with ISO9001 certification. Our Ship Desulfurization Tower Check Valve is specifically engineered for marine exhaust gas cleaning systems, combining a dual plate non-slam design with duplex steel construction to ensure reliable shut-off and long-term durability in corrosive environments. This valve is the ideal solution for preventing backflow in desulfurization towers while minimizing water hammer and maintenance costs.
The dual plate non-slam mechanism allows the valve to close quickly and smoothly as flow reverses, eliminating slamming noise and protecting downstream equipment. Each valve is precision-manufactured from high-grade duplex steel (e.g., 2205 or 2507), offering exceptional resistance to chloride stress corrosion and high mechanical strength. Available in sizes from DN50 to DN200 and pressure ratings from PN10 to PN40, these check valves meet a wide range of system specifications for shipboard desulfurization and other marine applications.
| Material | Duplex Steel (2205, 2507 optional) |
| Size Range | DN50 – DN200 (2" – 8") |
| Pressure Rating | PN10 – PN40 (Class 150 – 300) |
| Connection Type | Wafer or Lug (ANSI/DIN available) |
| Operating Temperature | Customizable upon request |
Key Features and Benefits:
- Non-Slam Operation: The dual plates are spring-assisted to close instantly upon flow reversal, preventing water hammer and extending valve life.
- Duplex Steel Excellence: Superior corrosion resistance to seawater, chlorides, and acidic condensates found in desulfurization towers.
- Wide Selection: DN50 to DN200 sizes and PN10 to PN40 pressure classes provide flexibility for different system designs.
- Compact Design: Wafer or lug style minimizes installation space and reduces weight, ideal for shipboard piping.
- Low Pressure Drop: Streamlined flow path reduces energy consumption compared to swing check valves.
- Bidirectional Sealing: Optional seal materials (EPDM, Viton) can be selected for specific temperature or chemical compatibility.
Our valves are manufactured in Shanghai, China, and exported to markets including North America, Europe, Southeast Asia, and Oceania. With an annual export value of US$1–1.5 million, Shanghai Zhibang Valve Co., Ltd. is committed to quality assurance. Each valve undergoes hydrostatic and leak testing before shipment. Supported by ISO9001 management systems, we ensure consistency and reliability in every product.
Trust Shanghai Zhibang Valve for your ship desulfurization tower check valve needs. Our experienced team can help you select the right materials, sizes, and connections for your specific marine application. Contact us today for a quote or technical consultation.
Frequently Asked Questions
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What is the material of the valve body and disc?
The standard material is duplex steel (e.g., 2205 or 2507). Both body and disc are made from duplex stainless steel for optimal corrosion resistance. -
Can this valve be used for seawater applications?
Yes, duplex steel is highly resistant to chloride-induced corrosion, making it suitable for seawater and other marine environments. -
What is the operating temperature range?
The temperature range depends on the sealing material. Standard is -20°C to 150°C; higher or lower temperatures can be accommodated with custom seals. -
Is the valve suitable for vertical installation?
Yes, the dual plate design can be installed in horizontal or vertical piping; however, for vertical lines with upward flow, a spring-loaded design is recommended. -
What standards does the valve comply with?
Our valves are designed to meet general industrial standards such as API 594, BS 1868, and DIN 3202. Please contact us for specific compliance details. -
Do you offer sizes outside DN50-DN200?
Custom sizes are available upon request. We can manufacture check valves from DN25 up to DN600 in various materials. -
What is the typical lead time?
Lead time ranges from 15 to 30 days depending on order quantity and custom requirements. Please inquire for precise scheduling. -
How do you ensure quality control?
We follow ISO9001 procedures, and each valve is tested for pressure, leak, and functionality before packaging. Test reports can be provided upon request.
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