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✨Pneumatic Eccentric Butterfly Valve
Categories：
Double Eccentric(Offset) Butterfly Valve
Pneumatic Eccentric Butterfly Valve | 38 Years of Valve Manufacturing Experience
Specializing in water treatment, wastewater treatment, seawater systems, and large-diameter eccentric valves.
⚙️ I. Product Overview
A pneumatic eccentric butterfly valve is an automated control valve driven by a pneumatic actuator. It uses compressed air to rotate the valve stem and disc, enabling rapid opening and closing or flow regulation of the pipeline medium.
The Zhongnan Valve pneumatic eccentric butterfly valve is primarily designed for water treatment, wastewater treatment, industrial water supply, seawater conveyance, and other industrial piping systems. It can be customized to meet project requirements by selecting different eccentric designs, valve body materials, sealing configurations, and pneumatic actuators.
Compared with conventional mid‑line butterfly valves, double‑eccentric butterfly valves employ an eccentric design between the valve stem and the disc, as well as in the sealing arrangement, which reduces friction between the disc and the seat during opening and closing. This helps lower operating torque, mitigate seal wear, and enhance the valve’s long‑term operational reliability.
Drawing on its valve‑manufacturing expertise since 1988, Zhongnan Valve specializes in eccentric valves and large‑diameter water‑treatment valves, offering product selection, technical consultation, and customized manufacturing support to project developers, equipment integrators, and valve distributors.
✨ II. Product Features and Advantages
✓ Eccentric sealing structure
Optimizing the motion trajectory during valve‑disc opening and closing reduces friction between sealing surfaces, thereby helping to extend the service life of the seals.
✓ Pneumatic automation control
Remote opening and closing are achieved via a pneumatic actuator, and the system can be equipped with accessories such as positioners, solenoid valves, and limit switches to meet varying levels of automation requirements.
✓ Multiple sealing options available
Depending on the medium, temperature, pressure, and leakage requirements, you can select an appropriate soft-seal or metal hard-seal configuration.
✓ Suitable for large-diameter pipelines
For water treatment plants, wastewater treatment plants, pumping stations, and industrial water distribution networks, equipment selection can be tailored to the actual pipe diameter, pressure class, and installation conditions.
✓ Flexible material configuration
The valve body, valve disc, stem, and sealing materials can be appropriately selected based on water quality, corrosivity, and operating conditions.
✓ Supports project customization
We can provide tailored technical selection support, taking into account pipeline standards, structural lengths, flange‑connection requirements, air‑supply conditions, and control methods.
💧 III. Main Application Areas
▪ Municipal Water Supply and Water Treatment Engineering
▪ Municipal and industrial wastewater treatment
▪ Seawater intake, conveyance, and discharge system
▪ Water treatment plant, pumping station, and circulating water system
▪ Industrial Pipeline Water Transport and Flow Control
▪ Environmental engineering and other water-related projects
Different application scenarios impose varying requirements on valve corrosion resistance, sealing performance, and actuator configuration; it is recommended to select an appropriate product design based on the actual operating conditions.
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