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Help CenterDouble Acting Pneumatic Actuator Butterfly Valve, DN80-DN300
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As a leading manufacturer with a strong commitment to quality and innovation, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Double Acting Pneumatic Actuator Butterfly Valve series. Engineered for demanding industrial applications, this valve combines robust construction with precise pneumatic control, offering a reliable solution for fluid management in pipelines from DN80 to DN300. Our years of expertise, backed by ISO9001 certified processes, ensure each valve delivers consistent performance, durability, and ease of integration into your automated systems. We understand the critical need for dependable flow control, and our product is designed to meet those challenges head-on, providing excellent shut-off and regulating capabilities for a wide range of media including water, air, gases, and mild chemicals.
This valve is a cornerstone for modern process automation, providing efficient on/off or modulating control in various industrial settings. Its design prioritizes longevity and minimal maintenance, making it a cost-effective choice for long-term operations.
- Robust Double Acting Pneumatic Actuator: The core of this valve is its high-performance double-acting pneumatic actuator. It utilizes air pressure from both sides of the piston to drive the valve open and closed, providing reliable bi-directional operation. This design is known for its simplicity, fast response time, and consistent torque output, ensuring the valve operates effectively even under varying line pressures.
- Durable Butterfly Valve Construction: The valve body is typically constructed from ductile iron or cast iron with epoxy coating for corrosion resistance, while stainless steel options are available for more aggressive environments. The disc, often made from stainless steel, is precision-machined to ensure a tight seal against the resilient seat.
- Superior Sealing Performance: We offer a selection of seat materials like EPDM, NBR, and PTFE to suit different media and temperature ranges. The eccentric disc design reduces wear on the seat during operation, extending the valve's service life and maintaining bubble-tight shut-off over time.
- Easy Installation and Maintenance: The compact and lightweight design of the butterfly valve, combined with a standardized actuator mounting interface, allows for straightforward installation in space-constrained areas. The modular design also facilitates easy maintenance; seats and seals can often be replaced without removing the valve body from the pipeline.
- Versatile Control and Accessories: The actuator can be equipped with various positioners, limit switches, solenoid valves, and fail-safe systems (with the addition of a spring return module) to meet specific control requirements. This flexibility allows integration into complex PLC or DCS-controlled systems.
- Wide Application Range: This valve series is suitable for numerous industries including water and wastewater treatment, HVAC, chemical processing, power generation, food and beverage, and general industrial manufacturing.
To provide a clear overview, here are some typical specifications for our standard offering:
| Parameter | Specification / Option |
|---|---|
| Valve Size (DN) | 80, 100, 125, 150, 200, 250, 300 |
| Pressure Rating (PN) | PN10, PN16, PN25 (Standard) |
| Body Material | Ductile Iron (GGG40), Cast Iron, CF8/CF8M Stainless Steel |
| Disc Material | Stainless Steel 304/316, Ductile Iron with Ni-plate |
| Seat Material | EPDM (Standard), NBR, PTFE, Viton |
| Actuator Air Supply | 4-7 bar (Standard), other ranges available |
| Actuator Action | Double Acting (Air to Open, Air to Close) |
| Control Options | On/Off, Proportional Control with Positioner |
The primary advantage of choosing our Double Acting Pneumatic Butterfly Valve is the combination of reliable performance and operational efficiency. The pneumatic actuation allows for rapid cycle times and remote operation, enhancing plant safety and automation levels. The robust valve design ensures minimal pressure drop and a long service life, reducing total cost of ownership. For our clients, this translates into a dependable component that minimizes downtime, simplifies process control, and offers flexibility for system upgrades or modifications.
Shanghai Zhibang Valve Manufacture Co., Ltd. stands behind every product we ship. Established in 2016, we have grown into a trusted supplier with an annual export value ranging between US$1 Million and US$1.5 Million, serving major markets across North and South America, Europe, Asia, Africa, and Oceania. Our ISO9001 certification is a testament to our unwavering commitment to quality management at every stage of production. We ship efficiently from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery to your project site. When you choose our pneumatic actuator butterfly valve, you are not just buying a product; you are gaining a reliable partner dedicated to supporting your industrial fluid control needs with proven quality and global service reach. Contact us today to discuss your specifications and discover how our valves can optimize your operations.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between double-acting and spring-return actuators?
A: A double-acting actuator uses air pressure to both open and close the valve. A spring-return (single-acting) actuator uses air to drive the valve in one direction and a spring to return it to its fail-safe position (open or closed) upon air loss. Double-acting is preferred for applications where air supply is constant and no specific fail-safe position is required.
Q2: Can this valve be used for throttling or flow control?
A: Yes. When paired with a pneumatic positioner (like a 4-20mA or 0-10V input type), the valve can provide precise proportional control, making it suitable for throttling applications to regulate flow rates.
Q3: What air supply pressure and quality are required for the actuator?
A: The standard actuator operates on 4-7 bar (approx. 60-100 psi) of clean, dry, lubricated or non-lubricated air. A filter-regulator-lubricator (FRL) unit is recommended upstream to ensure optimal performance and longevity.
Q4: Are customization options available for materials and accessories?
A> Absolutely. We offer various material combinations for body, disc, and seat to handle different media (acids, alkalis, oils, steam) and temperatures. Accessories like limit switches, solenoid valves, manual overrides, and positioners can be pre-mounted.
Q5: What is the typical delivery lead time for an order?
A: Lead times vary based on order quantity and customization. Standard configurations in popular sizes often have shorter lead times. Please contact our sales team with your specific requirements for an accurate delivery schedule.
Q6: How do I determine the correct valve size (DN) for my pipeline?
A> The valve size should match the nominal diameter (DN) of your pipeline. It's also crucial to consider flow rate (Cv/Kv values), pressure drop, and the media characteristics. Our technical team can assist you with sizing based on your application data.
Q7: What maintenance does this valve require?
A> Maintenance is generally minimal. Periodic checks of the actuator for air leaks and lubrication (if required), along with visual inspection of the valve for external corrosion, are recommended. The resilient seat may need replacement after extensive cycling, which is a relatively simple procedure.
Q8: Do you provide technical support and documentation?
A> Yes. We provide detailed product datasheets, dimensional drawings, installation manuals, and operation guides. Our engineering team is available to offer technical support for selection, installation, and troubleshooting.
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