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Help CenterElectric Regulating Butterfly Valve for Marine Use, 4-20mA Input, 0-90° Adjustable, Manual Override
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As a professional manufacturer specializing in industrial valves since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our Electric Regulating Butterfly Valve designed specifically for demanding marine applications. Engineered for precise flow control in shipboard systems, offshore platforms, and port facilities, this valve combines reliable electric actuation with a fail-safe manual override, ensuring operational continuity even in challenging environments. With an annual export value reflecting our global reach across markets from North America to Southeast Asia, we deliver products that meet the stringent requirements of the marine industry.
Our Marine Electric Butterfly Valve is built to provide accurate and responsive regulation of liquids and gases. The core of its functionality lies in the integration of a precision actuator that accepts a standard 4-20mA control signal, allowing for seamless integration with existing ship automation and control systems. The valve's disc can be adjusted smoothly from a fully closed (0°) to a fully open (90°) position, enabling fine-tuned flow management. This is crucial for applications such as ballast water control, fuel transfer, cooling water systems, and cargo handling.
- Robust Construction for Marine Environments: The valve body and disc are constructed from materials selected for corrosion resistance and durability in saltwater and humid conditions, such as stainless steel or specially coated carbon steel.
- Precision Electric Actuation: The actuator provides precise positioning based on the 4-20mA input signal, offering excellent repeatability and control accuracy for process automation.
- Essential Manual Override: A built-in handwheel or lever allows for manual operation in case of power loss or during maintenance, ensuring system safety and reliability.
- Flexible Configuration: Available in various sizes and connection types (flanged, wafer, lug) to suit different pipeline layouts and installation requirements.
- Adaptable Power Options: The actuator can be supplied with different voltage inputs (e.g., 24V DC, 110V AC, 220V AC) to match the electrical standards of the vessel or facility.
The technical specifications of the valve are detailed below to provide a clear overview of its capabilities and options.
| Parameter | Specification / Option |
|---|---|
| Valve Type | Electric Regulating Butterfly Valve |
| Primary Application | Marine & Offshore Systems |
| Standard Size Range | DN50 (2"), DN80 (3"), DN100 (4"), DN150 (6"), DN200 (8"), DN250 (10"), DN300 (12"), DN400 (16"), DN500 (20"), DN600 (24") |
| Control Signal Input | 4-20mA (Analog) |
| Adjustment Range (Rotation) | 0° (Closed) to 90° (Fully Open) |
| Manual Override Type | Handwheel or Lever (Model Dependent) |
| Body Material Options | Carbon Steel (with protective coating), Stainless Steel (304/316), Other Marine-grade Alloys |
| Seat Material | EPDM, NBR, Viton, or PTFE (depending on media) |
| Actuator Power Supply | 24V DC, 110V AC, 220V AC (Customizable) |
| Connection Standard | Flanged (ISO, ANSI, DIN), Wafer, Lug |
| Operating Pressure Range | Up to 16 Bar (232 PSI) typical |
| Operating Temperature Range | -20°C to +120°C (-4°F to +248°F), depending on seat material |
The advantages of using our Electric Regulating Butterfly Valve extend beyond its basic specifications. For marine operators and engineers, it translates into tangible benefits:
- Enhanced System Automation: The 4-20mA interface allows for easy integration with PLCs and control panels, enabling centralized monitoring and adjustment of flow rates, which improves operational efficiency and reduces manual intervention.
- Improved Process Control: Precise disc positioning ensures accurate flow regulation, which is vital for maintaining system balance, preventing overflows, and optimizing fuel or water usage.
- Critical Safety Feature: The manual override provides a reliable backup, allowing crew to maintain control during electrical failures, which is a key safety consideration in marine standards.
- Reduced Maintenance: The robust design and suitable materials minimize corrosion and wear, leading to longer service intervals and lower lifecycle costs.
- Global Compatibility: With our products shipped from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, and our experience supplying to diverse markets worldwide, we ensure our valves meet various international and regional specifications.
Shanghai Zhibang Valve Manufacture Co., Ltd. operates under an ISO9001 certified quality management system, ensuring consistent product quality and reliable performance. Our annual export value of US$1 Million to US$1.5 Million demonstrates our capacity and commitment to serving global clients. With a presence in markets across North America, South America, Europe, Asia, Africa, and Oceania, we understand the specific needs of the marine industry. This Electric Regulating Butterfly Valve embodies our dedication to providing durable, precise, and safe solutions for fluid control on ships and offshore installations. We encourage you to contact us for detailed quotations, technical consultations, or to discuss custom requirements tailored to your specific marine application.
Frequently Asked Questions (FAQ)
Q1: Is this valve suitable for controlling seawater?
A: Yes, it is designed for marine use. When selecting the appropriate body material (such as stainless steel 316) and seat material (like EPDM or Viton), it can effectively handle seawater, ballast water, and other corrosive marine fluids.
Q2: How does the 4-20mA input work with my existing control system?
A: The 4-20mA signal is a standard analog input in industrial automation. Your control system (PLC, DCS, or panel) sends a current signal proportional to the desired valve position. Our actuator interprets this signal and precisely moves the valve disc to the corresponding angle between 0° and 90°.
Q3: What happens if the power supply fails? Can the valve still operate?
A: Absolutely. The valve features a manual override mechanism (handwheel or lever). In the event of a power failure, personnel can manually open, close, or adjust the valve position to maintain system operation or safely isolate sections.
Q4: Can I request a specific voltage for the actuator, like 24V DC?
A: Yes, the power supply for the electric actuator is customizable. Common options include 24V DC, 110V AC, and 220V AC. You can specify your required voltage during the ordering process to match your vessel's electrical system.
Q5: What is the maximum pressure this valve can handle?
A: The typical operating pressure range is up to 16 Bar (232 PSI). The exact maximum pressure may vary slightly depending on the size and material configuration. Specific pressure ratings for your chosen model can be provided upon request.
Q6: Are different flange standards available?
A: Yes, we offer valves with flanges conforming to common standards such as ISO, ANSI, and DIN. Wafer and lug type connections are also available. Please specify your connection requirement when inquiring.
Q7: How is the quality of the valve ensured?
A: Our manufacturing process is ISO9001 certified, which means we follow a stringent quality management system. Each valve undergoes inspection and testing to ensure it meets performance specifications before shipment.
Q8: What is the lead time for delivery?
A: Lead times depend on the specific model, size, and customization. Standard configurations typically have shorter lead times. Since we ship from multiple ports (Shanghai, Guangzhou, Hongkong, Beijing), we can arrange efficient logistics. An estimated delivery timeline will be provided with your quotation.
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