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Help CenterPneumatic Actuated Butterfly Valve With 2-Year Warranty
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As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance industrial flow control solutions. Our Pneumatic Actuated Butterfly Valve represents our commitment to reliability and efficiency in demanding applications. This valve combines a robust butterfly valve mechanism with a precise pneumatic actuator, offering automated flow control for a wide range of industries. With an annual export value between US$1 Million and US$1.5 Million, our products have gained trust in markets across North America, South America, Europe, Asia, Africa, and Oceania. We ensure every valve leaving our Shanghai facility meets stringent quality standards, backed by our ISO9001 certified manufacturing process.
The core value of this Pneumatic Actuated Butterfly Valve lies in its ability to provide reliable, automated on/off or modulating control in pipelines handling liquids, gases, and semi-solids. Its design ensures quick operation, tight shut-off, and long service life, making it a cost-effective solution for plant automation. The integration of a pneumatic actuator allows for remote operation and seamless integration into PLC or DCS control systems, enhancing operational safety and efficiency by eliminating manual intervention in hazardous or hard-to-reach locations.
Key Features & Technical Advantages:
- Durable Construction: The valve body is typically crafted from cast iron, ductile iron, or stainless steel, providing excellent resistance to corrosion and mechanical stress. The disc, often made of stainless steel, ensures smooth operation and reliable sealing.
- Precise Pneumatic Actuation: The actuator is available in double-acting or spring-return configurations. It converts compressed air energy into precise rotary motion for accurate valve positioning, supporting both on/off and proportional control modes.
- Excellent Sealing Performance: Utilizes elastomer seats (like EPDM or NBR) or PTFE seats, offering bubble-tight shut-off for a wide range of media, including water, air, steam, and mild chemicals.
- Versatile Mounting & Connection: Available in wafer, lug, and flanged designs to suit different piping system requirements, facilitating easy installation and maintenance.
- Low Torque Operation: The 90-degree rotation design requires minimal torque to operate, which reduces the size and cost of the required actuator and saves energy.
- Compact & Lightweight Design: Compared to gate or globe valves, the butterfly valve design offers a more compact profile and lower weight, saving space and simplifying support structure requirements.
Technical Specifications:
| Parameter | Specification / Options |
| Valve Size | DN50 (2"), DN65 (2.5"), DN80 (3"), DN100 (4"), DN150 (6"), DN200 (8"), DN250 (10"), DN300 (12"), DN350 (14"), DN400 (16"), DN450 (18"), DN500 (20"), DN600 (24") |
| Pressure Class | PN10, PN16, ANSI 150LB |
| Body Material | Cast Iron (GG25), Ductile Iron (GGG40), Carbon Steel (WCB), Stainless Steel (CF8/CF8M) |
| Disc Material | Stainless Steel (304, 316), Ductile Iron with Ni-plating |
| Seat Material | EPDM (for water), NBR (for oil), PTFE (for chemicals, high temp) |
| Stem Material | Stainless Steel (304, 316) |
| Actuator Type | Pneumatic Double Acting, Pneumatic Spring Return (Fail-Safe) |
| Actuator Air Supply | Standard: 4-7 bar (58-102 psi). Other ranges customizable. |
| Control Signal (for Positioner) | 4-20mA, 0-10V DC, Switch Signal (On-Off) |
| Operating Temperature | Standard: -20°C to 120°C (depends on seat material). High-temp options available. |
| Leakage Class | ANSI/FCI 70-2 Class IV or Class VI (optional) |
Benefits for Your Operation:
- Enhanced Process Automation: Enables fully automated control loops, improving consistency, repeatability, and reducing human error.
- Improved Safety: Allows operators to control valves from a safe distance, crucial for handling hazardous media or in extreme environments.
- Reduced Operational Costs: The low-friction design and efficient actuator lead to lower air consumption and energy costs over time.
- Minimal Maintenance: Simple design with few moving parts translates to less wear and tear, lower maintenance frequency, and reduced downtime.
- Flexibility: Can be equipped with accessories like limit switches, solenoid valves, and positioners for advanced control and feedback.
- Long-Term Reliability: The use of quality materials and robust manufacturing ensures stable performance over extended periods, protecting your process integrity.
Choosing Shanghai Zhibang's Pneumatic Actuated Butterfly Valve means partnering with an established manufacturer with a proven global track record. Our products are shipped worldwide from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery to your project site. The comprehensive 2-Year Warranty we provide is a testament to our confidence in the product's quality and durability. This warranty covers defects in materials and workmanship, giving you peace of mind and protecting your investment. For engineers and procurement managers looking for a reliable, automated valve solution that balances performance with cost-effectiveness, our valve offers a compelling choice. Contact us today to discuss your specific application requirements, request a detailed quotation, or access technical support for your integration projects.
Frequently Asked Questions (FAQ):
-
Q: What is the main difference between double-acting and spring-return pneumatic actuators?
A: A double-acting actuator uses air pressure to move the valve in both opening and closing directions. A spring-return (or single-acting) actuator uses air to move in one direction and a built-in spring to return to a fail-safe position (either open or closed) upon air supply loss, which is critical for safety applications. -
Q: Can this valve be used for throttling or modulating flow control?
A: Yes, when paired with a pneumatic positioner that receives a proportional control signal (like 4-20mA), the valve can accurately position the disc at any angle between fully open and fully closed, enabling precise flow modulation. -
Q: What media is the EPDM seat material suitable for?
A: EPDM (Ethylene Propylene Diene Monomer) seats are excellent for hot water, steam (up to certain temperatures), alcohols, dilute acids, and alkalis. They are not recommended for petroleum-based oils, fuels, or strong aromatic hydrocarbons. -
Q: Is the valve suitable for food or pharmaceutical applications?
A: For such applications, we can provide valves with bodies and internals made of stainless steel (AISI 304 or 316L) and FDA-approved seat materials (like certain grades of EPDM or PTFE). Please specify your hygienic requirements when inquiring. -
Q: What accessories are typically needed for a complete automated valve package?
A: A complete package often includes the valve, pneumatic actuator, positioner (for modulation), solenoid valve (for on/off air control), limit switches (for position feedback), air filter regulator, and mounting brackets. We can supply these as a unit. -
Q: How do I determine the correct valve size and pressure rating for my application?
A: You need to know your pipe nominal diameter (e.g., DN100), the system's maximum working pressure and temperature, and the type of fluid. Our technical team can assist in selection based on these parameters. -
Q: What does the 2-year warranty cover?
A: The warranty covers any manufacturing defects or failures in materials under normal use conditions as specified in the manual. It does not cover damage from improper installation, misuse, operation outside specified parameters, or normal wear and tear. -
Q: What is the typical lead time for an order?
A: Lead time depends on the specification and quantity. Standard configurations may have shorter lead times, while custom materials or special accessories might require additional production time. We provide estimated lead times upon receipt of your detailed inquiry.
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