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4-20mA Proportional Control Marine Butterfly Valve, Modbus Communication Optional, Cast Iron Body
Product Spotlights
Marine-grade butterfly valve featuring precise 4-20mA proportional control for accurate flow modulation. Robust cast iron body ensures durability in harsh saltwater environments. Optional Modbus communication enables easy integration into shipboard automation networks. Designed for reliability in critical marine applications like cooling, ballast, and fuel systems.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine
Body Material:
Cast Iron
Control Signal:
4-20mA Proportional
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Body Material
Cast Iron
Control Signal
4-20mA Proportional
Communication Protocol
Modbus (Optional)
Valve Type
Butterfly Valve
Operation
Electric Actuator Proportional Control
Connection Type
Wafer or Lug (Specify)
Seat Material
EPDM, NBR, or Viton (Selectable)
Disc Material
Cast Iron, Stainless Steel Coated
Certification
ISO9001 Quality Management System
As a professional manufacturer with a solid foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents its advanced 4-20mA Proportional Control Marine Butterfly Valve. Designed specifically for the demanding environments of marine and offshore applications, this valve integrates precise flow control with robust construction. Our expertise in serving global markets across North America, Europe, Asia, and beyond ensures that this product meets the high standards required for critical fluid handling systems on vessels and offshore platforms. The core value lies in its ability to provide accurate, automated flow modulation directly tied to a standard industrial control signal, enhancing system efficiency and reliability.
This marine-grade butterfly valve is engineered for performance and durability. The key features and technical specifications are detailed below:
- Precise Proportional Control: The valve actuator responds linearly to a standard 4-20mA input signal, allowing for seamless integration with existing PLCs, DCS, or control panels. This enables fine-tuned flow rate adjustments from 0% to 100% opening.
- Rugged Cast Iron Body: The valve body is constructed from high-grade cast iron, providing excellent corrosion resistance and structural integrity to withstand harsh marine conditions, including saltwater exposure.
- Optional Modbus Communication: For advanced networking and centralized monitoring, an optional Modbus RTU or TCP/IP communication module can be integrated. This allows for remote valve status monitoring, diagnostics, and control within a SCADA system.
- Versatile Application Design: Ideal for seawater cooling systems, ballast water management, fuel oil transfer, bilge systems, firefighting lines, and general service applications on ships, tankers, and offshore rigs.
- Reliable Sealing Performance: Available with various seat materials like EPDM, NBR, or Viton to ensure tight shut-off and compatibility with different media (water, oil, chemicals).
- Fail-Safe Options: The electric actuator can be configured with fail-safe features (spring return) to move to a predefined safe position (open or closed) in case of power loss, a critical feature for marine safety.
The technical advantages translate into significant benefits for our clients:
- Enhanced Process Control: Achieve more stable system parameters (pressure, temperature) through precise flow modulation, improving overall operational efficiency.
- Reduced Operational Costs: Automation minimizes manual intervention, leading to labor savings and reduced risk of human error.
- Improved System Integration: The 4-20mA signal and optional Modbus make it easy to integrate into modern, automated ship management systems.
- Increased Durability & Lower Maintenance: The robust cast iron construction and quality components ensure a long service life with minimal maintenance needs, even in corrosive environments.
Key technical specifications are summarized in the following table:
| Attribute | Specification / Description |
| Control Signal | 4-20mA DC, Proportional |
| Communication | Modbus RTU/TCP (Optional, Available upon request) |
| Body Material | Cast Iron |
| Disc Material | Cast Iron with Epoxy Coating or Stainless Steel |
| Seat Material | EPDM (Standard), NBR, Viton (Customizable) |
| Pressure Rating | PN10, PN16, ANSI Class 125/150 (Selectable) |
| Temperature Range | Depends on seat material (e.g., EPDM: -20°C to +120°C) |
| Power Supply | 24VDC, 110VAC, 220VAC, 380VAC (Customizable) |
| Protection Class | IP67 (Typical for actuator, suitable for marine decks) |
Shanghai Zhibang Valve Manufacture Co., Ltd. operates under an ISO9001 certified quality management system, ensuring consistent product quality and reliable performance. With an annual export value between US$1 Million and US$1.5 Million, our products have gained trust in diverse markets worldwide, including North America, South America, Europe, Southeast Asia, Africa, and Oceania. Our strategic location in Shanghai and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing) enable efficient logistics and timely delivery to global clients. Choosing our proportional control marine butterfly valve means partnering with a dedicated manufacturer committed to providing durable, precise, and integrable flow control solutions for the marine industry. Contact us today to discuss your specific requirements or to request a detailed quotation.
Frequently Asked Questions (FAQ)
-
What is the primary advantage of a 4-20mA proportional control valve over an on/off valve?
A proportional control valve allows for precise modulation of flow rate, not just simple open/close functions. This enables fine control over process variables like pressure or temperature, which is crucial for optimizing system performance and efficiency in applications like cooling or fuel mixing. -
Is the Modbus communication module included by default?
No, the Modbus communication capability is an optional feature. The standard valve operates with the 4-20mA analog signal. The Modbus module can be added upon request for applications requiring network integration and remote data access. -
Can this valve handle seawater effectively?
Yes, the cast iron body with suitable protective coatings (like epoxy) and the availability of corrosion-resistant seat materials (like EPDM or Viton) make it well-suited for seawater service. The specific material combination should be selected based on the water chemistry and temperature. -
What are the available sizes for this marine butterfly valve?
Sizes are customizable. Typical ranges for marine applications are from DN50 (2") to DN600 (24") or larger. Please provide your required port size and pressure class for an accurate specification. -
How does the fail-safe function work?
The electric actuator can be ordered with a spring-return mechanism. In case of a power failure, the stored energy in the spring automatically drives the valve to a pre-set safe position (fully open or fully closed), which is essential for maintaining system safety on marine vessels. -
What is the lead time for an order?
Lead times vary based on order quantity, valve size, and specific configuration (like Modbus option). Standard configurations typically have shorter lead times. We provide estimated timelines upon receipt of your detailed inquiry. -
Do you provide technical support for system integration?
Yes, as a manufacturer, we offer technical support. We can provide wiring diagrams, communication protocol details for Modbus, and guidance on integrating the valve into your control system to ensure proper operation. -
Are spare parts readily available?
Yes, we maintain an inventory of common spare parts such as seals, seats, and actuator components. This ensures that maintenance can be performed promptly, minimizing vessel downtime.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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