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Home > Industrial Equipment & Components > Valve > Other Valves & Parts > Stainless Steel Electric Regulating Marine Butterfly Valve With 4-20mA Signal for Precise Flow Control

Stainless Steel Electric Regulating Marine Butterfly Valve With 4-20mA Signal for Precise Flow Control

Stainless Steel Electric Regulating Marine Butterfly Valve With 4-20mA Signal for Precise Flow Control thumbnail-3

Stainless Steel Electric Regulating Marine Butterfly Valve With 4-20mA Signal for Precise Flow Control thumbnail-4

Stainless Steel Electric Regulating Marine Butterfly Valve With 4-20mA Signal for Precise Flow Control thumbnail-5

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Stainless Steel Electric Regulating Marine Butterfly Valve With 4-20mA Signal for Precise Flow Control photo-4

Stainless Steel Electric Regulating Marine Butterfly Valve With 4-20mA Signal for Precise Flow Control photo-5

Product Spotlights

Precision marine-grade butterfly valve for accurate flow control. Features stainless steel construction for corrosion resistance in seawater applications. Integrated 4-20mA electric actuator enables seamless DCS/PLC integration and proportional modulating control. Compact design saves space on ships and offshore platforms. Offers reliable performance with options for fail-safe operation and manual override.

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

Key Specifications

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Material:

Stainless Steel (304/316 optional)

Valve Type:

Electric Regulating Butterfly Valve

Control Signal:

4-20mA analog signal for precise control

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
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Material Stainless Steel (304/316 optional)

Valve Type Electric Regulating Butterfly Valve

Control Signal 4-20mA analog signal for precise control

Application Marine, shipbuilding, offshore platforms

Connection Type Wafer, lug, or flange (customizable)

Seat Material PTFE, EPDM, or Viton (available upon request)

Actuator Type Electric modulating actuator

Operating Temperature Standard range -20°C to 150°C

Pressure Rating PN10, PN16, ANSI 150 (customizable)

As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for demanding marine and industrial applications. Our Stainless Steel Electric Regulating Marine Butterfly Valve with 4-20mA Signal represents our commitment to engineering excellence, designed specifically for systems where precise flow modulation is critical. With an annual export value reflecting our global reach across North America, South America, Europe, Asia, Africa, and Oceania, we understand the stringent requirements of international marine projects. This valve combines robust stainless steel construction with intelligent electric control, offering shipbuilders, offshore operators, and marine engineers a reliable component for managing liquids and gases with accuracy and durability in corrosive saltwater environments.

Core Product Features & Technical Advantages:

Precision Flow Regulation: The integrated 4-20mA analog signal input allows for seamless integration with modern Distributed Control Systems (DCS) and Programmable Logic Controllers (PLC). This enables proportional control where the valve position is directly and precisely correlated to the input signal, facilitating accurate flow, pressure, or temperature control loops essential for ballast systems, fuel management, cooling circuits, and cargo handling.
Marine-Grade Stainless Steel Construction: Manufactured from high-quality stainless steel (typically 304 or 316 grades available), the valve body and disc offer superior resistance to corrosion from seawater, salty air, and various chemicals found in marine operations. This material choice ensures a long service life and reduces maintenance needs in harsh offshore and coastal environments.
Intelligent Electric Actuator: The valve is equipped with a modulating electric actuator that provides smooth and precise positioning. Key features often include:
- Fail-safe options (spring return or battery backup) for critical safety applications.
- Local manual override capability for emergency operation or maintenance.
- Position feedback signal (4-20mA or potentiometer) for valve position indication to the control room.
- IP67 or higher ingress protection rating, making it suitable for washdown areas and exposed locations.
Robust Sealing & Bi-Directional Flow: The valve utilizes high-performance seat materials like PTFE, EPDM, or Viton, ensuring bubble-tight shut-off and reliable sealing even after numerous cycles. The symmetrical disc design typically allows for bi-directional flow, simplifying installation and piping layout.
Compact & Space-Saving Design: Butterfly valves are known for their compact wafer or lug-style design, which requires less installation space and is lighter compared to equivalent gate or globe valves. This is a significant advantage in the space-constrained compartments of ships and offshore platforms.
Low Torque & Energy Efficient Operation: The 90-degree rotary motion of the disc requires relatively low operating torque, which translates to smaller, more energy-efficient actuators and lower overall power consumption for the control system.

Technical Specifications Table:

Parameter	Specification / Options
Body Material	Stainless Steel 304 / 316 / CF8M
Disc Material	Stainless Steel, often with protective coating
Size Range (DN)	DN50 to DN600 (2" to 24") commonly available
Pressure Rating	PN10, PN16, ANSI 150, JIS 10K
Control Signal	4-20mA DC (Input & Position Feedback)
Power Supply (Actuator)	24VDC, 110VAC, 220VAC, 380VAC (options)
Operating Temperature	-20°C to 150°C (seat material dependent)
Seat Material	PTFE, EPDM, Viton, HNBR (selectable)
Connection Standard	Wafer, Lug, Double Flange per ANSI, DIN, JIS

Benefits for Your Marine Application:

Enhanced System Control: Achieve precise and repeatable flow control for processes like tank level management, fuel oil blending, and cooling water regulation, improving overall system efficiency and stability.
Reduced Operational Costs: The reliability and low maintenance requirements of stainless steel and quality components minimize downtime and repair expenses. Energy-efficient actuation also contributes to lower power costs.
Improved Safety & Compliance: Reliable shut-off and precise control contribute to safer vessel operations. The robust construction is suitable for demanding marine classifications and can be supplied with relevant documentation.
Simplified Integration: The standard 4-20mA control interface ensures easy connection to most modern marine automation and control systems, reducing engineering and commissioning time.
Global Supply & Support: With shipment capabilities from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, and a presence in markets worldwide, we ensure timely delivery and support for your international projects.

Our operations are backed by a commitment to quality management, as reflected in our ISO9001 certification. This framework ensures consistent product quality, reliable performance, and traceability from raw material to finished valve. With millions in annual exports and a supply chain serving every major continent, we have proven our ability to meet the diverse and stringent demands of the global marine industry. When you choose this Electric Regulating Marine Butterfly Valve, you are selecting a component engineered for precision, built for endurance in the toughest environments, and supported by a manufacturer with a global footprint. Contact our engineering team today to discuss your specific application requirements, pressure ratings, size needs, and customization options for your next marine or offshore project.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of using a 4-20mA signal with this butterfly valve?
A: The 4-20mA analog signal is an industry-standard for process control. It allows for continuous, proportional positioning of the valve (not just open/close), enabling precise flow, pressure, or level regulation. It is also highly resistant to signal degradation over long distances compared to voltage signals.
Q: Can this valve be used for seawater applications?
A: Yes, it is specifically designed for marine use. When ordered with 316 stainless steel body/disc and compatible seat materials like EPDM or Viton, it offers excellent corrosion resistance for seawater, ballast water, bilge systems, and other saltwater services.
Q: What happens if the control signal or power is lost?
A: The actuator can be configured with optional fail-safe features. A common option is a spring-return mechanism that drives the valve to a predefined safe position (fully open or fully closed) upon signal/power failure, which is crucial for safety-critical applications.
Q: Is local manual operation possible?
A: Yes, most electric actuators on these valves include a manual handwheel or lever for local manual override. This allows for operation during maintenance, commissioning, or in case of an emergency when automatic control is unavailable.
Q: What is the typical delivery time for a custom-sized valve?
A: For standard sizes and specifications, delivery can be relatively quick. For custom sizes, specific materials, or special certifications, lead times may vary. We recommend contacting our sales team with your specific requirements for an accurate production schedule.
Q: Can you provide valves with different flange standards (e.g., ANSI, DIN, JIS)?
A: Absolutely. We can manufacture valves with wafer, lug, or flanged connections to meet various international standards such as ANSI, DIN, JIS, BS, and GOST, ensuring compatibility with your existing piping systems.
Q: What kind of warranty or after-sales support do you offer?
A> We stand behind the quality of our products. Specific warranty terms are provided with the commercial contract. Our technical support team is available to assist with installation guidance, troubleshooting, and spare parts inquiries.
Q: Are these valves suitable for controlling viscous fluids like heavy fuel oil?
A> They can be, but the application must be reviewed. For highly viscous fluids, special considerations regarding seat material, actuator torque sizing, and potential heating jackets may be necessary. Please provide detailed fluid properties for our engineering assessment.