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Home > Industrial Equipment & Components > Valve > Butterfly Valve > 4-20mA Signal Marine Butterfly Valve With On-Site Technical Support and Calibration Service Available

4-20mA Signal Marine Butterfly Valve With On-Site Technical Support and Calibration Service Available

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4-20mA Signal Marine Butterfly Valve With On-Site Technical Support and Calibration Service Available thumbnail-4

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4-20mA Signal Marine Butterfly Valve With On-Site Technical Support and Calibration Service Available photo-3

4-20mA Signal Marine Butterfly Valve With On-Site Technical Support and Calibration Service Available photo-4

4-20mA Signal Marine Butterfly Valve With On-Site Technical Support and Calibration Service Available photo-5

Product Spotlights

A marine-grade butterfly valve featuring precise 4-20mA analog control for automated flow regulation in shipboard systems. Offers robust construction with material options for corrosive environments. Enhanced by available on-site technical support and calibration services for optimal installation and long-term performance. Ideal for integrating into modern marine automation for safety, efficiency, and reliability.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Signal Type:

4-20mA analog control signal

Valve Type:

Butterfly Valve

Application Field:

Marine, Shipbuilding, Offshore Platforms

Contact Supplier Request Quote Chat Now

Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Signal Type 4-20mA analog control signal

Valve Type Butterfly Valve

Application Field Marine, Shipbuilding, Offshore Platforms

Body Material Optional: Cast Iron, Ductile Iron, Stainless Steel

Disc Material Optional: Stainless Steel, Nickel-plated, Coated

Seat Material Optional: EPDM, NBR, PTFE, Metal

Connection Type Wafer, Lug, Flanged (customizable)

Actuator Type Electric/Pneumatic with 4-20mA signal input

Support Service On-site technical support and calibration available

Standard/Certification ISO9001 Quality Management System

As a professional manufacturer with a strong focus on marine fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our advanced 4-20mA Signal Marine Butterfly Valve. Engineered for the demanding environments of shipbuilding, offshore platforms, and marine engineering, this valve integrates precise analog signal control with robust construction. Since our establishment in 2016, we have dedicated ourselves to providing reliable, high-performance valves that ensure operational safety and efficiency for our global clientele across North America, South America, Europe, Asia, Africa, and Oceania.

This intelligent butterfly valve is designed for seamless integration into modern marine automation systems. Its core value lies in delivering precise flow regulation through a standard 4-20mA control signal, enabling remote operation and monitoring from the ship's control room. This eliminates the need for manual intervention in often hazardous or hard-to-reach areas, significantly enhancing crew safety and operational efficiency. Our commitment extends beyond the product itself; we offer comprehensive on-site technical support and calibration services to ensure optimal performance throughout the valve's lifecycle, a service highly valued in the global maritime industry.

Key Features & Technical Advantages:

Intelligent Control & Integration: The valve actuator accepts a standard 4-20mA analog signal, providing proportional control for precise flow modulation. This allows for easy integration with existing PLCs, DCS, and onboard control systems.
Robust Marine-Grade Construction: Designed to withstand harsh marine conditions, including saltwater corrosion, vibration, and variable pressures. Material options are tailored for specific fluid media and environmental challenges.
High Reliability & Safety: Features fail-safe options (e.g., spring return) and durable sealing to prevent leaks, which is critical for vessel safety and environmental protection.
Versatile Configuration: Available in various sizes, connection types (wafer, lug, flanged), and actuator combinations (electric or pneumatic) to fit diverse piping layouts and system requirements.
Low Maintenance Design: The streamlined butterfly valve design offers minimal flow resistance and is engineered for long service intervals, reducing total cost of ownership.

Detailed Technical Specifications:

Parameter	Specification / Option
Control Signal	4-20mA DC (Two-wire or four-wire system)
Valve Body Material	Cast Iron, Ductile Iron, Stainless Steel (304/316), Aluminum Bronze
Disc Material	Stainless Steel, Nickel-plated Steel, Coated Steel
Seat Material	EPDM, NBR, Viton, PTFE, Metal Seat
Pressure Rating (PN)	PN10, PN16, PN25, PN40 (Customizable)
Size Range (DN)	DN50 (2") to DN600 (24") or as requested
Connection Standard	ISO, ANSI, JIS, DIN, GB standards available
Actuator Power Supply	24VDC, 110VAC, 220VAC, or pneumatic supply (0.4-0.7MPa)
Protection Class	IP67, IP68 (Optional for marine harsh environment)
Ambient Temperature	-20°C to +80°C (Extended range optional)

Benefits for Your Marine Operations:

Enhanced Automation: Enables centralized control of ballast, cooling, fuel, and bilge systems, reducing manpower needs.
Improved Accuracy: Proportional control allows for fine-tuned flow rates, optimizing system performance and energy usage.
Reduced Downtime: Durable construction and available on-site support minimize unplanned maintenance and operational interruptions.
Global Compliance Support: Our experience supplying to major maritime markets helps ensure configurations meet regional and international standards.
Scalable Solutions: Whether for a single valve replacement or a complete ship valve package, we provide scalable solutions.

Backed by our ISO9001 certified quality management system and an annual export value reflecting consistent global trust, Shanghai Zhibang stands as a reliable partner. Our products are shipped worldwide from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. Choosing our 4-20mA Marine Butterfly Valve means investing not just in a component, but in a comprehensive solution supported by technical expertise and a commitment to your project's success. We encourage you to contact us with your specific requirements for a tailored quotation and to discuss how our on-site calibration service can benefit your operations.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of a 4-20mA signal over a simple on/off control?
A: A 4-20mA signal provides proportional control, allowing the valve to be positioned anywhere between fully open and fully closed based on the current value. This enables precise flow rate adjustment, which is essential for processes like tank level control or cooling system modulation, leading to greater efficiency and control compared to simple on/off operation.
Q: Can this valve be used with seawater or other corrosive fluids?
A: Yes. We offer material combinations specifically designed for corrosive media. For seawater applications, we typically recommend a stainless steel (316) body and disc with an appropriate seat material like EPDM or PTFE. The exact specification depends on concentration, temperature, and flow velocity.
Q: What does your on-site technical support and calibration service include?
A: Our service can include initial installation supervision, commissioning, signal loop checking, calibration of the valve's position against the 4-20mA input, functional testing, and operator training. The scope is customizable based on your project needs and location.
Q: How do I choose between an electric and a pneumatic actuator for this valve?
A: The choice depends on your ship's available power sources and safety requirements. Electric actuators are common where electrical power is readily available and offer precise control. Pneumatic actuators are often preferred in hazardous areas where explosion-proof requirements are stringent, as they use compressed air. We can advise based on your system layout.
Q: Is the valve suitable for high-pressure applications on ships?
A: Our valves are available in various pressure ratings (PN10 to PN40 and higher). You need to specify your system's maximum working pressure and fluid type. We engineer the valve with appropriate materials and a robust design to ensure safe operation at the rated pressure.
Q: What is the typical lead time for an order?
A: Lead time varies based on order quantity, customization, and material availability. Standard configurations typically have a shorter lead time. We provide a clear production schedule upon order confirmation to facilitate your project planning.
Q: Do you provide documentation like calibration certificates and material test reports?
A> Yes, upon request, we can provide relevant documentation, including calibration reports for the actuator/signal unit and material certificates of conformity. This is part of our comprehensive quality assurance under the ISO9001 framework.
Q: Can you supply valves compatible with specific shipboard control system brands?
A> The 4-20mA signal is an industry-standard interface. Our valves are designed to be compatible with most major PLC and control system brands (e.g., Siemens, Allen-Bradley, ABB). We ensure the signal interface matches your specified requirements.