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As a specialized manufacturer of industrial valves since 2016, Shanghai Zhibang Valve is proud to present our premium range of 316 Stainless Steel Marine Butterfly Valves. Engineered to meet the rigorous demands of the global maritime industry, these valves are designed for reliable performance in critical shipboard applications such as seawater, ballast, and cooling systems. Holding both CCS and ABS certifications, our valves offer shipbuilders and marine engineers a trusted solution that combines superior corrosion resistance with robust construction, ensuring long-term durability and operational safety in harsh marine environments.
Our commitment to quality, backed by ISO9001 certification, is reflected in every valve we produce. With an annual export value demonstrating our global reach across markets from North America to Southeast Asia, we understand the specific requirements of international marine projects. Our valves are shipped from major ports like Shanghai and Hong Kong, ensuring efficient logistics for our partners worldwide.
Core Product Features & Technical Advantages:
- Premium Material Construction: Manufactured from 316 stainless steel, offering exceptional resistance to pitting and crevice corrosion caused by chlorides in seawater, far superior to 304 stainless steel.
- Rugged Marine-Grade Design: The valve body and disc are precision-machined to withstand high pressures, vibration, and thermal cycling typical of marine operations.
- Versatile Sealing Options: Available with a variety of seat materials including EPDM, PTFE, and Viton to suit different fluid media and temperature ranges, ensuring a bubble-tight seal.
- Multiple Actuation Methods: Designed for flexibility, our valves can be fitted with manual levers, gear operators, or automated pneumatic/electric actuators for remote control integration.
- Optimized Flow Characteristics: The disc design minimizes pressure drop and turbulence, promoting efficient system performance and reducing pump energy consumption.
- Easy Installation & Maintenance: The compact wafer or lug design allows for straightforward installation between flanges, saving space and weight – a critical factor in marine applications.
Detailed Technical Specifications:
| Parameter | Specification |
| Body & Disc Material | AISI 316 / 316L Stainless Steel |
| Size Range (Nominal Diameter) | DN50 (2") to DN600 (24") |
| Pressure Rating (PN) | PN10, PN16, PN25 (Standard) |
| Temperature Range | -20°C to +180°C (depends on seat material) |
| Connection Standards | ISO, DIN, ANSI, JIS (customizable) |
| Face-to-Face Dimensions | Compliant with ISO 5752 / EN 558 Series |
| Seat Material Options | EPDM, NBR, PTFE, Viton |
| Operation Types | Manual (Lever/Gear), Pneumatic, Electric |
| Flow Coefficient (Cv) | Available upon request for each size |
| Leakage Class | Zero Leakage (Soft Seat), ANSI Class VI (optional) |
Benefits for Your Marine Projects:
- Enhanced System Reliability: The certified design and quality materials minimize the risk of in-service failure, reducing downtime and maintenance costs.
- Compliance Assurance: CCS and ABS certifications provide confidence that the valves meet stringent international marine standards, simplifying approval processes for new builds and retrofits.
- Long Service Life: Superior corrosion resistance extends valve lifespan even in aggressive seawater applications, offering a better total cost of ownership.
- Operational Safety: Robust construction ensures safe containment and control of fluids under pressure, protecting personnel and equipment.
- Global Supply Support: With established export channels to key maritime regions, we provide reliable supply and technical support wherever your projects are located.
Choosing Shanghai Zhibang Valve means partnering with a manufacturer whose products are proven in the field. Our valves are trusted by shipyards and operators across continents, from Eastern Europe to Oceania. The combination of our ISO9001 quality management system, direct manufacturing control, and deep understanding of marine specifications allows us to deliver products that perform consistently. We invite you to experience the reliability and value of our certified marine butterfly valves. Contact us today to discuss your specific requirements, request detailed technical data sheets, or to place a sample order. Let us be your valve solution for smoother sailing ahead.
Frequently Asked Questions (FAQ)
Q1: What is the key difference between 304 and 316 stainless steel for marine valves?
A: 316 stainless steel contains molybdenum, which significantly enhances its resistance to chloride-induced corrosion, such as pitting and crevice corrosion commonly encountered in seawater. This makes 316SS the preferred and often mandatory material for critical marine valve applications.
Q2: Are your CCS and ABS certifications valid for all valve sizes and configurations?
A: Yes, our certification scope covers the standard range of sizes and pressure classes we offer. Certificates and type approval documents are available for review upon request to confirm compliance for your specific project.
Q3: Can these butterfly valves be used for both on/off service and flow regulation?
A: While primarily designed for reliable isolation (on/off), the design of our valves allows for moderate throttling control in many applications. For precise flow regulation, we recommend consulting our engineers to select the optimal disc and seat combination.
Q4: What is the typical lead time for an order?
A: Lead times vary based on order quantity, size, and actuation type. Standard configurations are typically available from stock or have shorter production cycles. We provide accurate lead time estimates with every quotation.
Q5: Do you offer custom modifications, such as special flange standards or extended stems?
A: Absolutely. As a manufacturer, we have the flexibility to customize various aspects, including flange drilling patterns (ANSI, JIS, DIN), stem length, locking devices, and special paint or marking requirements to meet specific shipyard or owner specifications.
Q6: What kind of warranty do you provide?
A: We stand behind the quality of our products with a comprehensive warranty against defects in material and workmanship. The specific warranty period and terms are provided with the commercial contract.
Q7: How do I select the correct seat material (EPDM, PTFE, Viton)?
A: Selection depends on the fluid media (seawater, chemicals, oil), temperature range, and required sealing performance. Our technical team can guide you through the selection process based on your system parameters.
Q8: Can you supply the valves with pneumatic or electric actuators?
A: Yes, we offer a complete package including the valve and compatible pneumatic or electric actuators from reputable brands. We can pre-assemble and test the actuated unit before shipment for plug-and-play installation.
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