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As a leading manufacturer with a strong commitment to quality and safety, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our specialized Explosion-Proof Electric Actuator. Engineered specifically for marine butterfly valves operating in hazardous areas, this actuator integrates robust explosion-proof construction with precise 4-20mA signal control. Since our establishment in 2016, we have focused on delivering reliable valve automation solutions for critical applications worldwide. This product exemplifies our dedication to providing equipment that ensures operational safety, enhances process control, and meets the stringent demands of marine and offshore industries. With an annual export value reflecting our global reach, we understand the challenges of remote and dangerous environments, making this actuator a cornerstone of our portfolio for safe and efficient valve operation.
This actuator is designed to provide reliable and safe automation for butterfly valves in locations where flammable gases, vapors, or dust may be present. Its core value lies in combining intrinsic safety with high performance.
- Robust Explosion-Proof Design: The housing is constructed from durable materials and engineered to contain any internal ignition, preventing it from triggering an explosion in the surrounding hazardous atmosphere. This is critical for compliance with safety regulations in oil & gas terminals, chemical plants, and onboard vessels.
- Precise 4-20mA Control: The integrated 4-20mA analog signal interface allows for seamless integration with existing Distributed Control Systems (DCS) or Programmable Logic Controllers (PLC). This enables precise modulating control of the butterfly valve, not just simple open/close functions, for optimal flow regulation.
- Marine-Grade Durability: Built to withstand the corrosive marine environment, key components feature stainless steel and protective coatings. The high ingress protection (IP) rating ensures reliable operation despite exposure to salt spray, moisture, and dust.
- High Torque Output: Engineered to deliver sufficient torque to operate butterfly valves of various sizes reliably, even under demanding pressure differentials or with sticky media.
- Fail-Safe Options: Configurations are available to provide fail-safe operation (spring return) to a predetermined safe position (open or closed) in case of power loss, enhancing process safety.
- Easy Installation and Maintenance: Designed for straightforward mounting onto standard butterfly valves, with accessible terminals and manual override for emergency use.
Technical specifications for a standard model series are outlined below. Custom configurations for specific voltage, torque, or signal requirements are available.
| Parameter | Specification |
|---|---|
| Actuator Type | Multi-turn Electric, Explosion-Proof |
| Control Signal | 4-20mA Analog (Input/Feedback) |
| Power Supply | 24VDC, 110VAC, 220VAC, 380VAC (Optional) |
| Housing Material | Aluminum Alloy (Explosion-Proof Enclosure) |
| Protection Degree | IP67 (Standard), Higher ratings available |
| Ambient Temperature | -20°C to +60°C (Extended range optional) |
| Duty Cycle | S2 - Short Time Duty or S4 - Intermittent Duty |
| Mounting Interface | ISO 5211 standard mounting pad |
| Manual Override | Integrated handwheel |
The advantages of choosing our actuator translate into direct benefits for your operations:
- Enhanced Safety: Mitigates the risk of ignition in classified hazardous zones, protecting personnel and assets.
- Improved Process Control: Precise 4-20mA modulation allows for fine-tuned flow control, improving efficiency and product quality.
- Reduced Downtime: High reliability and robust construction minimize failures and maintenance needs in harsh environments.
- Global Compliance: Designed to meet common international standards for use in hazardous areas, facilitating project approvals.
- Long Service Life: Corrosion-resistant materials and quality manufacturing ensure a long operational lifespan, providing a strong return on investment.
Backed by our ISO9001 certified quality management system, every Explosion-Proof Electric Actuator from Shanghai Zhibang undergoes rigorous testing to ensure it performs as specified under demanding conditions. Our annual export value of US$1-1.5 Million to diverse markets including North America, Southeast Asia, Europe, and Africa is a testament to the reliability and acceptance of our products globally. We support this with efficient logistics, shipping from major ports like Shanghai, Guangzhou, and Hong Kong. For your critical valve automation needs in hazardous marine and industrial settings, trust a manufacturer with proven expertise and a commitment to safety. Contact us today to discuss your specific requirements and discover how our actuator can be the reliable and safe solution for your project.
Frequently Asked Questions (FAQ)
Q1: What exactly makes this actuator "explosion-proof"?
A1: The term "explosion-proof" means the actuator's enclosure is designed to withstand an internal explosion of flammable gas or vapor without allowing the flames or hot gases to escape and ignite the surrounding hazardous atmosphere. It contains and cools any internal ignition, making it safe for use in designated zones.
Q2: Can this actuator be used for both on/off and modulating control of a butterfly valve?
A2: Yes. The inclusion of the 4-20mA control signal allows it to receive a variable input from a controller, enabling precise positioning of the valve disc for modulating flow control, in addition to performing standard open and close functions.
Q3: Is it suitable for use in Zone 1 hazardous areas?
A3: Our actuators are designed for use in hazardous areas where flammable atmospheres may be present. The specific zone classification (e.g., Zone 1, Zone 2) depends on the exact model's certification. Please consult with our technical team with your area classification requirements for the correct product selection.
Q4: What are the available power supply options?
A4: We offer a range of standard power supply options including 24VDC, 110VAC, 220VAC, and 380VAC to suit different regional and onboard power systems. Other voltages can be discussed as a custom option.
Q5: How do I know which torque rating I need for my butterfly valve?
A5: The required torque depends on valve size, pressure differential, and fluid characteristics. We recommend providing your valve specifications (size, pressure rating) and application details. Our engineers can then assist in selecting or configuring an actuator with the appropriate torque output.
Q6: Do you provide a manual override feature?
A6: Yes, a manual override handwheel is integrated into the actuator design. This allows for manual operation of the valve during commissioning, maintenance, or in the event of a power failure.
Q7: What is the typical lead time for an order?
A7> Lead times vary based on order quantity and specific configuration. For standard models, we often have stock or short production cycles. We provide clear lead time estimates upon receipt of your detailed inquiry.
Q8: From which ports can you ship, and what are your main export markets?
A8: We ship from major Chinese ports including Shanghai, Guangzhou, and Hong Kong. Our products are exported globally, with significant markets in North America, Southeast Asia, Eastern Europe, Africa, and the Middle East, demonstrating wide international acceptance.
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