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Help CenterMarine Grade Electric Regulating Butterfly Valve With 4-20mA Input, Fail-Safe Open/Close Function
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As a leading manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions. Our Marine Grade Electric Regulating Butterfly Valve with 4-20mA Input and Fail-Safe Open/Close Function is engineered for demanding maritime and industrial applications. This valve combines precise flow control with robust construction, ensuring reliable operation in corrosive and high-pressure environments. We leverage our expertise and modern manufacturing facilities to deliver products that meet the stringent requirements of global markets, including North America, Europe, and Southeast Asia.
This valve is designed for superior performance and longevity. Its key features and benefits include:
- Precise Flow Regulation: The integrated 4-20mA control signal input allows for seamless integration with existing PLC or DCS systems, enabling accurate and automated flow control.
- Robust Marine-Grade Construction: The valve body is crafted from high-grade stainless steel, offering exceptional resistance to saltwater corrosion, making it ideal for shipboard systems, offshore platforms, and coastal facilities.
- Critical Fail-Safe Operation: In the event of a power failure or signal loss, the valve automatically moves to a pre-set safe position (fully open or fully closed), preventing system damage and ensuring operational safety.
- High-Torque Electric Actuator: The actuator is designed for reliable performance with a high IP rating for dust and water resistance, ensuring dependable operation in harsh conditions.
- Versatile Sealing Options: Available with EPDM or PTFE seat materials to suit a wide range of media temperatures and chemical compatibilities.
- Easy Installation and Maintenance: The compact wafer or lug design simplifies installation into existing piping systems, while the modular construction allows for easy maintenance and part replacement.
The technical specifications for a standard configuration are detailed in the table below. Please note that many parameters are customizable to meet your specific project requirements.
| Parameter | Specification | Notes |
|---|---|---|
| Valve Size Range | DN50 - DN600 | Other sizes available upon request |
| Pressure Rating | PN10, PN16 | Standard ratings |
| Control Signal | 4-20mA (2-wire) | Standard input for modulating control |
| Power Supply | 24VDC, 110VAC, 220VAC | Optional |
| Actuator Protection | IP67 | Suitable for outdoor/wet locations |
| Fail-Safe Action | Spring Return (Open or Close) | Configurable during order |
| Body Material | Stainless Steel 316/316L | Marine grade standard |
| Seat Material | EPDM (Standard), PTFE (Optional) | For temperature/chemical resistance |
Shanghai Zhibang Valve Manufacture Co., Ltd. brings over eight years of manufacturing excellence and a commitment to quality, evidenced by our ISO9001 certification. Our products are trusted by clients across diverse regions, from North America and Western Europe to Southeast Asia and Africa, with an annual export value reflecting our global reach and reliability. Sourced from major Chinese ports like Shanghai and Guangzhou, our valves are delivered efficiently worldwide. This Marine Grade Electric Regulating Butterfly Valve embodies our dedication to providing durable, safe, and precisely controllable solutions for critical applications. Its combination of corrosion-resistant materials, intelligent fail-safe design, and industry-standard control interface makes it a dependable choice for your marine or industrial projects. Contact us today to discuss your specifications or request a detailed quotation.
Frequently Asked Questions (FAQ)
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What does "Marine Grade" specifically mean for this valve?
"Marine Grade" indicates that the primary valve body material is a stainless steel alloy, such as 316 or 316L, which offers superior resistance to pitting and crevice corrosion caused by chlorides present in seawater and marine atmospheres. This ensures long-term durability in offshore and coastal environments. -
How does the 4-20mA control input work with this valve?
The valve's electric actuator receives a standard 4-20mA analog signal from your control system (e.g., PLC). A 4mA signal typically commands the valve to the closed position, 20mA to the fully open position, and any value in between provides proportional modulating control, allowing for precise flow rate adjustment. -
Can I choose whether the valve fails open or closed?
Yes. The fail-safe function is configurable. You can specify during the ordering process whether you require the valve to automatically spring return to a fully OPEN or fully CLOSED position upon power/signal failure, based on your system's safety requirements. -
What is the typical response time for the valve to open or close?
The response time depends on the valve size and actuator model. Generally, for standard sizes (DN50-DN300), the full travel time (0-100% open) ranges from approximately 15 to 60 seconds. Specific data is available upon request for your selected size. -
Is this valve suitable for fluids other than water?
Yes, with the appropriate seat material selection. While EPDM is standard for water and mild services, we offer PTFE seats for more aggressive chemicals, oils, or high-temperature media. Please consult with our technical team regarding your specific media compatibility requirements. -
Do you provide manual override capability?
Yes, a manual handwheel or crank override is available as an optional feature on the electric actuator. This allows for manual operation during maintenance, commissioning, or in case of an emergency when power is unavailable. -
What are the available communication protocols besides 4-20mA?
While 4-20mA is the standard analog control, other control signal options such as 0-10V DC or discrete on/off control (with feedback signals) may be available. Please inquire for specific protocol compatibility. -
What is your lead time for a custom order?
Lead times vary based on order quantity, valve size, and configuration complexity. For standard models, typical lead times range from 4-6 weeks ex-works. We provide accurate delivery estimates upon receipt of your detailed inquiry or purchase order.
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