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Help CenterDIN 3202 Flanged Butterfly Valve for Seawater Systems, 316L Stainless Steel Disc, EPDM Seat, DN50-600 PN16
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As a leading manufacturer with a strong export footprint across global markets, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium DIN 3202 Flanged Butterfly Valve. Engineered specifically for demanding seawater systems, this valve combines robust 316L stainless steel construction with high-performance EPDM seating to deliver reliable shut-off and long service life in corrosive marine environments. Our commitment to quality, backed by ISO9001 certification, ensures that every valve meets stringent performance standards, providing our clients in sectors like offshore platforms, shipbuilding, and coastal processing plants with a trustworthy fluid control solution.
This valve is designed for optimal performance and durability. Key features and benefits include:
- Superior Corrosion Resistance: The disc is crafted from 316L stainless steel, offering excellent resistance to pitting and crevice corrosion caused by chlorides in seawater, significantly outperforming standard 304 stainless steel.
- Reliable Bubble-Tight Seal: The EPDM (Ethylene Propylene Diene Monomer) seat provides exceptional sealing performance, ensuring leak-proof operation even under PN16 pressure. Its resilience accommodates minor seat wear and offers good chemical resistance.
- Robust Flanged Connection: Manufactured to DIN 3202 F1 standard dimensions, the flanged ends ensure a secure, leak-free connection to piping systems, facilitating easy installation and maintenance.
- Versatile Operation: Available with a manual lever for quick quarter-turn operation, a gearbox for higher torque applications, or can be fitted with pneumatic/electric actuators for remote or automated control systems.
- Wide Size and Application Range: With sizes from DN50 to DN600, this valve series is suitable for a broad spectrum of pipeline diameters in seawater intake/discharge, cooling systems, ballast water handling, and other marine or industrial fluid applications.
- Durable Construction: The valve body is typically offered in ductile iron with epoxy coating or cast steel, with other materials like stainless steel available upon request to match specific corrosion and pressure requirements.
Below is a summary of key technical specifications:
| Parameter | Specification |
|---|---|
| Product Standard | DIN 3202 F1 |
| Nominal Diameter (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600 |
| Pressure Rating (PN) | 16 |
| Disc Material | 316L Stainless Steel (Standard) |
| Seat Material | EPDM |
| Body Material Options | Ductile Iron (Epoxy Coated), Cast Steel WCB, Stainless Steel CF8M |
| Stem Material | Stainless Steel 431 or 17-4PH |
| Operation Types | Lever, Gear Operator, Pneumatic Actuator, Electric Actuator |
| Temperature Range (Seat Dependent) | -10°C to +120°C (for EPDM) |
| Face-to-Face Dimension | Per DIN 3202 F1 Series |
Choosing our DIN 3202 butterfly valve brings tangible benefits to your operations. Its low torque requirement ensures easy operation, reducing manpower and maintenance costs. The compact and lightweight design compared to gate valves saves space and simplifies installation. The reliable sealing minimizes fluid loss and prevents environmental contamination, which is critical in sensitive marine ecosystems. Furthermore, the interchangeability of parts and adherence to international standards streamline inventory management and future replacements.
Shanghai Zhibang Valve, established in 2016, has rapidly grown into a trusted supplier, exporting valves worth between US$1 Million to US$1.5 Million annually to key markets including North America, Europe, Southeast Asia, and the Middle East. Our ISO9001 certified manufacturing processes guarantee consistent quality and reliability. With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure efficient and flexible logistics to meet your project timelines. Our proven track record in supplying critical components for seawater systems worldwide is a testament to the valve's performance. For a durable, efficient, and cost-effective solution for your marine fluid control needs, contact us for detailed specifications, pricing, and to discuss custom requirements.
Frequently Asked Questions (FAQ)
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Q: Why is 316L stainless steel specifically recommended for seawater applications?
A: Seawater contains high levels of chlorides, which can cause pitting and crevice corrosion in standard stainless steels. 316L stainless steel has a higher molybdenum content, which greatly enhances its resistance to this type of corrosion, making it a suitable choice for prolonged exposure to seawater. -
Q: Can this valve be used with media other than seawater?
A: Absolutely. While optimized for seawater, this valve is suitable for a wide range of mildly corrosive fluids, fresh water, chilled water, and other industrial applications where its material compatibility and pressure rating are appropriate. Always verify chemical compatibility for specific media. -
Q: What are the available actuation options, and how do I choose?
A: We offer manual lever handles, gear operators for higher torque, and pneumatic or electric actuators. The choice depends on your system's requirements: manual for simple on/off, gear for larger sizes or higher pressure, and actuators for automated, remote-controlled, or frequent operation scenarios. -
Q: Is the EPDM seat suitable for high temperatures?
A: The standard EPDM seat is rated for temperatures from -10°C to +120°C. For applications exceeding this range, alternative seat materials like PTFE or metal seats can be explored as optional configurations. -
Q: Are the flanges drilled according to DIN 3202, and are gaskets and bolts included?
A: Yes, the valve flanges are drilled to the precise hole pattern and dimensions specified in the DIN 3202 F1 standard. Typically, valves are supplied without gaskets and bolts, as these are often project-specific. However, they can be provided as part of a complete package upon request. -
Q: What is the lead time for an order of DN400 valves?
A: Lead times vary based on order quantity, material specifications, and actuation type. Standard configurations often have shorter lead times. We recommend contacting our sales team with your specific requirements for an accurate production and delivery schedule. -
Q: Do you offer customization, such as different coatings or special testing?
A: Yes, we provide customization options. This can include special epoxy or paint coatings for the body, different seat materials, extended stems, locking devices, and specific testing requirements like shell tests or seat leak tests. Please discuss your needs during inquiry. -
Q: What kind of warranty or after-sales support do you provide?
A: We stand behind the quality of our products. Specific warranty terms are provided with each order. Our technical support team is available to assist with installation guidance, troubleshooting, and sourcing spare parts like seals or discs if needed.
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