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Help CenterDIN 3202 Marine Butterfly Valve For Seawater - 316L SS Disc, EPDM Seal, PN10/PN16, DN50-DN600
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As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our premium DIN 3202 Marine Butterfly Valve. Engineered for the demanding conditions of marine and seawater applications, this valve is built to deliver reliable flow control, exceptional corrosion resistance, and long-term durability. Our commitment to ISO9001-certified quality control ensures that every valve meets stringent performance standards, providing a dependable solution for shipbuilding, offshore platforms, and coastal installations worldwide.
The core value of this valve lies in its robust construction and material selection, specifically designed to withstand aggressive seawater environments. We understand that equipment failure in marine settings can lead to significant operational downtime and costs. Therefore, our butterfly valve is meticulously crafted to offer a perfect balance of performance, longevity, and ease of maintenance, making it a smart investment for any maritime project.
Key Features & Technical Advantages:
- Superior Corrosion Resistance: The disc is manufactured from 316L Stainless Steel, an austenitic chromium-nickel alloy with added molybdenum. This composition provides outstanding resistance to pitting and crevice corrosion caused by chlorides in seawater, far exceeding the performance of standard 304 stainless steel.
- Reliable Sealing Performance: The seat utilizes EPDM (Ethylene Propylene Diene Monomer) rubber, known for its excellent resistance to seawater, ozone, and weathering. It ensures a bubble-tight seal over a wide temperature range, minimizing leakage and ensuring system integrity.
- Robust Structural Design: Compliant with the DIN 3202 standard, the valve features a sturdy lug or wafer body design (configurable based on requirement), ensuring a secure connection to the pipeline and even distribution of pipeline stresses.
- Wide Size and Pressure Compatibility: Available in a comprehensive size range from DN50 to DN600, it caters to various pipeline diameters. With pressure ratings of PN10 and PN16, it is suitable for a broad spectrum of low to medium-pressure seawater systems, including cooling water, ballast, firefighting, and bilge lines.
- Low Torque Operation & Easy Maintenance: The streamlined disc design and high-quality bearing system ensure low operating torque. The simple design allows for easy in-line maintenance or seat replacement without removing the entire valve body, significantly reducing downtime.
- Versatile Actuation Options: The valve can be operated manually via a handle, gearbox, or can be fitted with pneumatic or electric actuators for automated remote control, integrating seamlessly into modern ship automation systems.
Detailed Technical Specifications:
| Parameter | Specification |
| Product Standard | DIN 3202 |
| Disc Material | 316L Stainless Steel (UNS S31603) |
| Seat / Seal Material | EPDM |
| Body Design | Lug Type or Wafer Type (Optional) |
| Nominal Pressure | PN10, PN16 |
| Nominal Diameter (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600 |
| Connection Standard | Flanged as per DIN standard dimensions |
| Temperature Range (Seat Dependent) | Typically -15°C to +130°C for EPDM (Specific range available upon request) |
| Operation | Lever, Gear, Pneumatic Actuator, Electric Actuator |
Benefits for Our Clients:
- Extended Service Life: The combination of 316L SS and EPDM drastically reduces maintenance frequency and replacement costs in corrosive seawater environments.
- Enhanced System Safety: Reliable shut-off and sealing prevent seawater ingress or leakage, protecting sensitive onboard equipment and ensuring operational safety.
- Global Compliance: The DIN 3202 design is widely recognized and accepted in international marine projects, facilitating procurement and installation.
- Operational Efficiency: Low torque operation reduces the effort needed for manual control and allows for the use of smaller, more cost-effective actuators for automation.
- Supply Chain Reliability: With an annual export value ranging between US$1 Million and US$1.5 Million, we have a proven track record of supplying high-quality valves to markets across North America, South America, Europe, Asia, Africa, and Oceania, ensuring dependable delivery.
Backed by our ISO9001 quality management system and years of manufacturing expertise since 2016, Shanghai Zhibang Valve guarantees a product that is not only built to specification but also built to last. Our strategic location with multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing) enables flexible and efficient logistics to meet your project timelines anywhere in the world. Choose our DIN 3202 Marine Butterfly Valve for a solution that combines technical excellence with proven reliability in the toughest marine conditions.
Frequently Asked Questions (FAQ):
Q1: What is the main advantage of using 316L stainless steel instead of 304 for the disc?
A: 316L stainless steel contains molybdenum (2-3%), which significantly enhances its resistance to chloride-induced corrosion, such as pitting and crevice corrosion, commonly encountered in seawater. 304 stainless steel lacks sufficient molybdenum and is more susceptible to failure in such environments, making 316L the preferred choice for marine applications.
Q2: Can this valve be used with other media besides seawater?
A: Yes. While optimized for seawater, the 316L/EPDM material combination is also suitable for a variety of other corrosive fluids, including many chemicals, brackish water, and treated wastewater, provided the fluid's chemical compatibility with EPDM is verified within the specified temperature and pressure limits.
Q3: What is the difference between lug-type and wafer-type body designs?
A: A wafer-type valve is installed between two flanges using long bolts that pass through the entire pipeline assembly. A lug-type valve has threaded inserts (lugs) on both sides, allowing it to be bolted directly to each flange independently. Lug-type valves are often preferred for end-of-line service or when one side of the pipeline may need to be disconnected.
Q4: Is the valve suitable for high-temperature seawater applications?
A: The standard EPDM seat has a typical temperature range. For applications involving higher temperatures, alternative seat materials like Viton (FKM) may be available upon request. It is crucial to specify your operating temperature during inquiry to ensure the correct seal material is selected.
Q5: Are actuators included with the valve?
A: Actuators (pneumatic, electric) are typically offered as optional accessories. We can supply the valve alone (manual operation) or provide a complete package with an actuator matched to your required torque, control signal, and fail-safe mode. Please provide your actuation requirements for a precise quotation.
Q6: Do you provide documentation and certifications with the valves?
A: Yes. As an ISO9001-certified manufacturer, we can provide standard documentation including material test reports, inspection certificates, and operational manuals. Specific certification requirements can be discussed and fulfilled based on your project needs.
Q7: What is the typical lead time for an order of DN200 valves?
A: Lead times vary based on order quantity, specific configuration (actuation, body type), and current production schedule. Generally, for standard configurations, production can be completed within a few weeks. We prioritize efficient communication to provide accurate lead time estimates upon receiving your detailed inquiry.
Q8: How do you ensure quality control during manufacturing?
A: Our quality control is integrated throughout the production process, from raw material inspection (certified mill test reports for metals) to machining, assembly, and final testing. Each valve undergoes pressure tests (shell and seat tests) according to relevant standards before shipment to ensure it meets the declared performance specifications.
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