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DN50-DN800 Marine Butterfly Valve for Flue Gas Desulfurization Tower, Duplex Stainless Steel Body and PTFE Seal
Product Spotlights
Designed for harsh FGD and marine environments, this butterfly valve features a corrosion-resistant Duplex Stainless Steel body and a reliable PTFE seal for bubble-tight shut-off. It offers long service life, low maintenance, and is available in sizes DN50 to DN800 with various actuation options, backed by ISO 9001 certified manufacturing.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Duplex Stainless Steel Body, PTFE Seal
Size Range:
DN50 to DN800
Application:
Flue Gas Desulfurization Tower, Marine
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Duplex Stainless Steel Body, PTFE Seal
Size Range
DN50 to DN800
Application
Flue Gas Desulfurization Tower, Marine
Connection Type
Wafer or Lug (Optional)
Operation
Manual Lever, Gear, or Actuator
Pressure Rating
PN10/PN16/PN25 (Customizable)
Temperature Range
-20°C to 180°C (PTFE Seal)
Standard
ISO 9001 Quality Management
Design Standard
API 609, ISO 5752
As a leading manufacturer with a strong commitment to quality and innovation, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our specialized DN50-DN800 Marine Butterfly Valve. Engineered specifically for the demanding environments of Flue Gas Desulfurization (FGD) towers and marine applications, this valve is built to deliver reliable isolation and control in corrosive and abrasive service. Since our establishment in 2016, we have focused on providing robust fluid control solutions, and this valve exemplifies our dedication to meeting the stringent requirements of global industries, from power generation to shipbuilding.
This butterfly valve is designed to withstand the harsh conditions present in FGD systems, where flue gases containing sulfur oxides, chlorides, and fly ash can rapidly degrade standard components. Its construction and sealing technology ensure long-term performance, minimizing maintenance downtime and operational costs for our clients worldwide.
Core Product Features & Technical Advantages:
- Superior Corrosion & Erosion Resistance: The valve body is constructed from Duplex Stainless Steel, a material renowned for its excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. This makes it ideal for handling aggressive media like scrubber slurry and seawater.
- High-Performance Sealing: The seat is lined with PTFE (Polytetrafluoroethylene), providing exceptional chemical inertness, a low coefficient of friction, and reliable bubble-tight shut-off even after prolonged cycling.
- Robust Design for Demanding Service: The valve features a streamlined disc design that minimizes pressure drop and turbulence. The stem is designed for high mechanical strength and is fully isolated from the media, preventing stem leakage and corrosion.
- Versatile Operation & Configuration: Available with manual lever, gearbox, or pneumatic/electric actuation for remote or automated control. Connection types include wafer and lug style to suit various piping system requirements.
Detailed Technical Specifications:
| Parameter | Specification / Option |
|---|---|
| Size Range (Nominal Diameter) | DN50, DN65, DN80, DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600, DN700, DN800 |
| Pressure Rating | PN10, PN16, PN25 (Standard). ANSI Class 150/300 available upon request. |
| Body & Disc Material | Duplex Stainless Steel (UNS S31803/S32205) |
| Seat / Liner Material | Virgin PTFE |
| Stem Material | Stainless Steel (17-4PH or equivalent) |
| Operating Temperature | -20°C to +180°C (with PTFE seat) |
| End Connection | Wafer (Double Flange) or Lug (Threaded Holes) |
| Face-to-Face Dimension | Complies with ISO 5752 / API 609 standards |
| Leakage Class | Bubble-tight (Zero Leakage) per industry standards |
Benefits for Your Operation:
- Extended Service Life: The combination of duplex steel and PTFE dramatically reduces wear from abrasive particles and chemical attack, leading to fewer replacements.
- Reduced Maintenance Costs: The robust design and reliable sealing minimize the need for frequent adjustments or repairs, lowering total cost of ownership.
- Enhanced System Safety & Efficiency: Reliable isolation prevents process media leakage, protecting downstream equipment and ensuring environmental compliance in FGD operations.
- Global Supply & Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we efficiently serve markets across North America, South America, Europe, Asia, Africa, and Oceania.
Backed by our ISO 9001 certification, every valve undergoes rigorous quality checks to ensure it meets precise dimensional and performance criteria. Our annual export volume of US$1-1.5 million to diverse global markets is a testament to the reliability and acceptance of our products. We understand the critical nature of FGD and marine systems, and our valve is engineered to be a dependable component in your infrastructure. For a durable, high-performance sealing solution that stands up to corrosive challenges, contact Shanghai Zhibang Valve today to discuss your project requirements or request a detailed quotation.
Frequently Asked Questions (FAQ)
-
Q: Why is Duplex Stainless Steel preferred for FGD applications?
A: Duplex stainless steel offers a superior blend of strength and corrosion resistance compared to standard 316 stainless steel. It performs exceptionally well in chloride-rich environments typical of FGD scrubber slurry and seawater, resisting pitting and stress corrosion cracking effectively. -
Q: What are the advantages of a PTFE seat in this valve?
A: PTFE provides excellent chemical resistance to a wide range of acids, alkalis, and solvents found in flue gas. It also offers a low-friction surface, ensuring smooth operation and consistent, bubble-tight sealing over many cycles. -
Q: Can this valve be used for throttling control in FGD systems?
A: While primarily designed for isolation (on/off service), the valve's disc design allows for moderate throttling. For precise flow control, we recommend consulting our engineers to select the appropriate disc profile and actuator combination. -
Q: What actuation options are available?
A: The valve can be fitted with manual lever handles, gear operators for high-torque applications, or automated actuators (pneumatic, electric, or hydraulic). The choice depends on your system's automation level and required operating torque. -
Q: Are your valves compliant with international standards?
A: Yes. Our manufacturing process is certified to ISO 9001. The valve design and dimensions conform to widely recognized standards such as ISO 5752 and API 609, ensuring compatibility with global piping systems. -
Q: What is the typical delivery lead time for an order?
A: Lead times vary based on size, quantity, and configuration. Standard sizes and materials often have shorter lead times. Please contact our sales team with your specific requirements for an accurate delivery schedule. -
Q: Do you provide customization for special applications?
A: Absolutely. We can customize aspects like material grades (super duplex), special trim, extended stems, locking devices, or painting specifications to meet unique project needs. Please provide your detailed specifications for a tailored solution. -
Q: How do you ensure quality before shipment?
A: Each valve undergoes multiple inspections, including material certification checks, dimensional verification, pressure testing (shell and seat), and operational tests. Detailed test reports can be provided upon request.
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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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