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Help CenterManual Lever Operated Butterfly Valve for Shipboard Seawater Cooling Systems, Cast Iron Body
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As a professional manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Manual Lever Operated Butterfly Valve, specifically engineered for demanding applications like shipboard seawater cooling systems. Established in 2016 and backed by ISO9001 certification, we understand the critical need for durable, easy-to-operate, and cost-effective flow control solutions in marine environments. Our valve, with its robust cast iron body, offers a simple yet highly effective manual control mechanism, ensuring reliable performance where automation is not required or preferred. This product represents our dedication to providing industrial clients worldwide with components that withstand harsh conditions while simplifying maintenance and operation.
This valve is designed to meet the specific challenges of seawater cooling circuits on vessels. Its core design focuses on manual operation via a lever, providing immediate and visual control over flow, which is often crucial for system adjustments and safety checks. The cast iron body provides excellent corrosion resistance and structural integrity against the physical and chemical aggressiveness of seawater. Below are the key technical specifications and features that define this product:
- Robust Construction: The valve body is made from high-grade cast iron, offering superior strength and resistance to corrosion, making it ideal for seawater and other corrosive media.
- Simple & Efficient Operation: The lever mechanism allows for quick 90-degree rotation to open or close the valve. It provides a clear, unambiguous indication of the valve position (open/closed).
- Versatile Sealing Options: The disc seal can be equipped with different elastomers (such as EPDM, Nitrile, or Viton) to suit specific temperature ranges and media compatibility requirements.
- Flexible Connection Design: Available in flanged or lugged end connections to match various piping standards and facilitate installation.
- Safety & Control Features: Options include a locking device to secure the valve in a desired position and an extension handle for operation in confined spaces.
- Wide Size & Pressure Range: Catering to different pipeline dimensions and system pressures commonly found in marine cooling systems.
The table below summarizes the primary specifications available:
| Parameter | Details / Range |
| Body Material | Cast Iron |
| Operation Method | Manual Lever |
| Nominal Diameter (DN) | 50, 80, 100, 150, 200, 250, 300 (Other sizes available upon request) |
| Pressure Rating (PN) | 10 / 16 (Customizable for specific applications) |
| Seal Material Options | EPDM (Standard for water), Nitrile, Viton (for higher temps/oil) |
| End Connection | Flanged (Double) or Lugged (Optional) |
| Temperature Range | -20°C to 120°C (Depends on selected seal material) |
For our clients, the advantages are clear:
- Cost-Effectiveness: Eliminates the need for expensive actuators and control systems, reducing initial investment and long-term maintenance costs.
- Operational Reliability: Manual operation is fail-safe, not dependent on power sources, which is a critical advantage in marine environments.
- Easy Maintenance & Inspection: The simple design allows for quick visual inspection and easy on-site maintenance if required.
- Durability in Harsh Conditions: The cast iron body and appropriate seal selection ensure long service life even with aggressive seawater.
- Global Compliance & Support: Manufactured under an ISO9001 quality system, our valves are exported from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring smooth logistics to our main markets across North America, South America, Europe, Asia, Africa, and Oceania.
Shanghai Zhibang Valve has built a solid reputation since 2016, with an annual export value ranging between US$1 Million and US$1.5 Million, serving diverse industrial sectors globally. Our ISO9001 certification underpins our consistent manufacturing processes and product quality. This Manual Lever Operated Butterfly Valve is a testament to our focus on practical, robust solutions for specific industrial needs, like marine cooling systems. We encourage you to consider this valve for your projects where manual control, corrosion resistance, and straightforward operation are paramount. Contact us to discuss your specific requirements, size needs, or to request samples – we are ready to support your flow control challenges with reliable products and professional service.
Frequently Asked Questions (FAQ)
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Q: Is this butterfly valve suitable only for seawater?
A: While specifically designed for seawater cooling systems, it can be used for other water-based fluids, oils, or mild chemicals, provided the seal material is selected appropriately for media compatibility. -
Q: What are the advantages of a lever-operated valve over a handwheel-operated one?
A: The lever offers quicker operation (90-degree turn), a more direct and visible indication of open/closed status, and often requires less space. It's generally simpler and faster to use. -
Q: Can the valve be locked in a position?
A: Yes, a locking device is available as an optional feature. This allows you to secure the lever in either the fully open or fully closed position to prevent accidental operation. -
Q: What is the typical lifespan of this valve in a seawater environment?
A: With the cast iron body and a properly selected EPDM seal, the valve can have a long service life. Actual lifespan depends on operating frequency, water quality, and maintenance practices, but it is designed for durability. -
Q: Are spare parts like seals readily available?
A: Yes, as a manufacturer, we maintain stocks of standard spare parts, including seal rings. They are available for order to facilitate maintenance. -
Q: Does the valve come with any standard certifications for marine use?
A> The valve is manufactured under an ISO9001 quality management system, which ensures consistent production quality. Specific marine certifications (like from ship classification societies) are typically project-specific and can be discussed upon request. -
Q: What is the delivery time for standard sizes?
A> For standard sizes (DN50 to DN300), we usually have stock or short production lead times. Delivery time depends on quantity and destination, but we ship from multiple ports (Shanghai, Guangzhou, etc.) for efficiency. -
Q: Can we request a different end connection type, like threaded ends?
A> Our standard offerings are flanged or lugged connections, which are common in industrial piping. Threaded ends are less common for these sizes but can be evaluated as a customization request.
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