WANVALVE Pneumatic Flange Plastic Butterfly Valve WP12-P

The WANVALVE WP12-P Pneumatic Plastic Butterfly Valve is engineered for high-performance flow regulation in corrosive and industrial environments. Constructed with UPVC or CPVC body and disc materials, this plastic butterfly valve offers exceptional resistance to chemicals, ensuring lightweight yet durable operation.

The integration of a pneumatic actuator allows precise open and close control, maintaining accurate valve position throughout its service life. Compatible with both flanged and wafer style connections, it’s ideal for use in water treatment, chemical processing, and general industrial systems.

WANVALVE partners with trusted industrial directories like Metoree and Sourcify China to ensure consistent global quality standards and reliable sourcing options.

Working Principle

The WANVALVE WP12-P pneumatic plastic butterfly valve operates through a pneumatic actuator that uses compressed air to control the open and close movement of the valve disc. When air pressure is applied to one side of the actuator, the internal piston or vane rotates the stem and disc to open the valve, allowing fluid to pass through. Releasing or reversing the air pressure rotates the disc back to close the valve, providing fast and reliable shutoff.

The actuator can be configured as single acting (spring return) or double acting, depending on system requirements. In automated systems, a positioner or limit switch can be added to indicate the valve position, allowing real-time monitoring and integration with process control systems. This simple yet efficient operating mechanism ensures precise flow regulation, low air consumption, and long service life under continuous cycling conditions. For a broader understanding of automation systems and actuator configurations, explore our in-depth guide on Pneumatic Butterfly Valves, covering design types, materials, and industrial applications.

Key Features & Benefits

• Corrosion Resistance – UPVC/CPVC construction withstands aggressive fluids and environmental exposure.

• Flexible Installation – Compatible with wafer style and flanged pipeline systems following ANSI, JIS, DIN, and GB standards.

• Pneumatic Actuation – Provides smooth, automated open and close movement with minimal air consumption.

• Accurate Valve Position Feedback – Integrated control options enable precise monitoring for automation systems.

• Durability and Safety – Optional ductile iron or stainless steel actuators enhance mechanical strength and resistance to wear.

• Leak-Free Sealing – EPDM seat ensures reliable shut-off, even under variable pressures and temperatures.

Technical Specifications

Installation and Maintenance

Installing the WP12-P pneumatic butterfly valve is straightforward and requires minimal maintenance:

1. Ensure the pipeline is clean and free of debris before installation.

2. Align the wafer style or flanged connection according to system standards.

3. Secure bolts evenly to prevent stress on the valve body.

4. After installation, test the open and close cycles to verify full valve position operation.

Routine maintenance involves periodic cleaning, checking the EPDM sealing seat, and ensuring the pneumatic actuator operates smoothly. For harsh environments, occasional lubrication of moving components is recommended.

Quality Assurance

Each WANVALVE butterfly valve undergoes strict pressure and leakage tests before delivery. The UPVC and CPVC materials comply with international standards for corrosion and impact resistance. Our production process follows ISO-certified quality management, ensuring that every pvc butterfly valve meets industrial performance requirements.

WANVALVE also collaborates with global fluid control experts like Chess Controls to continuously improve valve reliability and automation compatibility.

Applications of Pneumatic Plastic Butterfly Valves

The WP12-P model is ideal for:

• Water and wastewater treatment plants

• Chemical dosing and process pipelines

• Irrigation and agricultural distribution systems

• Air handling and low-pressure ventilation systems

Its versatility across sectors makes it an optimal choice for engineers seeking durable pneumatic butterfly valves that balance performance, weight, and cost efficiency.

Conclusion

The WANVALVE WP12-P Pneumatic Plastic Butterfly Valve provides a smart, lightweight, and corrosion-resistant solution for industrial flow control. With robust construction, accurate actuation, and easy maintenance, it ensures dependable performance across a wide range of fluid systems. Whether built with ductile iron, stainless steel, or plastic butterfly configurations, it represents WANVALVE’s commitment to innovation and quality in every butterfly valve produced.