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As a leading manufacturer in the flow control industry, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our specialized line of Corrosion-Resistant Marine Butterfly Valves. Engineered for the demanding environments of the maritime and offshore sectors, these valves are designed to provide reliable shut-off and regulation of seawater, ballast, fuel, and other critical shipboard fluids. Our commitment to quality, backed by our ISO9001 certified manufacturing processes and approvals from leading classification societies like CCS and LR, ensures that every valve meets the stringent requirements for safety, durability, and performance at sea. We understand that equipment failure is not an option in marine applications, which is why our valves are built to withstand harsh saline atmospheres, constant vibration, and wide pressure variations.
Our marine butterfly valves are distinguished by several key features and technical advantages that make them a preferred choice for shipbuilders, shipowners, and offshore platform operators worldwide.
- Superior Corrosion Resistance: The valve body, disc, and stem are meticulously crafted from high-grade corrosion-resistant materials such as 316L stainless steel or duplex stainless steel. This material selection is crucial for combating the accelerated corrosion caused by saltwater, ensuring a long service life even in the most aggressive marine environments.
- Robust and Leak-Tight Design: The valve features a resilient seat, available in EPDM, PTFE, or other compatible elastomers, which provides a bubble-tight seal in both directions. The disc design ensures low operating torque and minimizes pressure drop across the valve, contributing to overall system efficiency.
- Versatile Actuation Options: To suit various automation needs onboard, our valves can be equipped with different actuators. They are compatible with manual lever/handwheel, gear-operated, pneumatic, and electric actuators. This flexibility allows for easy integration into both manually operated and fully automated control systems.
- Compact and Lightweight Construction: The butterfly valve design is inherently compact compared to other valve types like gate or globe valves. This saves valuable space and weight on vessels and offshore structures, a critical factor in marine design where every kilogram counts.
- Easy Installation and Maintenance: Designed with the end-user in mind, our wafer and lug-style valves allow for easy installation between pipe flanges without the need for nuts on both sides, simplifying the process. The simple design also means fewer wearing parts and easier in-situ maintenance, reducing downtime and operational costs.
Below is a summary of common technical specifications for our standard marine butterfly valve range. Custom configurations are available upon request to meet specific project requirements.
| Parameter | Specification / Option |
|---|---|
| Size Range (Nominal Diameter) | DN50 (2") to DN600 (24") |
| Pressure Rating | PN10, PN16 / Class 150 |
| Body & Disc Material | CF8M (316), CF3M (316L), Duplex Stainless Steel |
| Stem Material | 17-4PH Stainless Steel or equivalent |
| Seat Material | EPDM, NBR, PTFE, FKM (Viton) |
| Operating Temperature | -20°C to +120°C (EPDM), up to +200°C (PTFE) |
| Connection Type | Wafer, Lug, Double Flange |
| Operation | Lever, Gear, Pneumatic Actuator, Electric Actuator |
The primary benefit for our clients is enhanced operational reliability and safety. By using valves specifically designed and approved for marine service, ship operators mitigate the risk of leaks, failures, and subsequent costly repairs or environmental incidents. The corrosion-resistant build translates directly into reduced lifecycle costs, as the valves require less frequent replacement and maintenance compared to standard industrial valves. Furthermore, the availability of CCS and LR approvals streamlines the vessel classification and certification process for our customers, saving them significant time and administrative effort.
With nearly a decade of manufacturing expertise since our establishment in 2016, Shanghai Zhibang Valve has built a solid reputation for delivering quality-engineered valve solutions. Our annual export value, ranging between US$1 Million and US$1.5 Million, is a testament to the trust placed in us by a global clientele spanning North and South America, Europe, Asia, Africa, and Oceania. We ship efficiently from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery to your project site. When you choose our Corrosion-Resistant Marine Butterfly Valves, you are not just purchasing a component; you are investing in peace of mind, backed by formal certifications and a manufacturer dedicated to maritime excellence. Contact us today to discuss your specific requirements and receive a competitive quotation.
Frequently Asked Questions (FAQ)
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Q: What do CCS and LR approvals mean for this valve?
A: CCS (China Classification Society) and LR (Lloyd's Register) are internationally recognized marine classification societies. Their approval signifies that the valve design, materials, and manufacturing process have been reviewed and tested to meet specific standards for use in marine and offshore applications. This is often a mandatory requirement for equipment installed on classed vessels. -
Q: Can these valves be used for both seawater and fuel oil lines?
A: Yes, they are suitable for a variety of shipboard fluids. The key is selecting the appropriate seat material. For example, EPDM is excellent for seawater, while PTFE or FKM (Viton) may be recommended for fuel oils or chemicals. Please consult with our engineers for your specific media. -
Q: Are spare parts readily available?
A: Absolutely. As the direct manufacturer, we maintain an inventory of common spare parts such as seals, seats, and stems. This ensures quick turnaround for maintenance kits, minimizing vessel downtime. -
Q: What is the typical delivery lead time for an order?
A: Lead time varies based on order quantity, size, and configuration. For standard sizes and materials, we often have stock or can produce within 4-6 weeks. We provide a confirmed timeline with every quotation. -
Q: Do you provide valves with actuators already mounted?
A: Yes, we offer a complete package. We can supply the valve pre-assembled with a manual gearbox, pneumatic actuator, or electric actuator from reputable brands. This ensures proper compatibility and saves you installation time. -
Q: How does the corrosion resistance of 316L compare to Duplex stainless steel?
A: Both offer excellent corrosion resistance. 316L is a standard marine-grade austenitic stainless steel. Duplex stainless steels offer higher strength and superior resistance to stress corrosion cracking, making them suitable for more demanding applications. The choice depends on the specific service conditions and budget. -
Q: Is the ISO9001 certification for your company or the product?
A: Our manufacturing facility holds the ISO9001:2015 Quality Management System certification. This certifies our processes for design, production, and inspection, which directly contributes to the consistent quality and reliability of every valve we produce. -
Q: Can you produce valves to other international standards like ANSI, JIS, or GOST?
A: Yes, customization is a core part of our service. We can manufacture valves to meet dimensional, pressure, and testing requirements of ANSI, JIS, GOST, and other standards upon request. Please provide the detailed standard specification with your inquiry.
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