WANVALVE Pneumatic Stainless Steel Flange Butterfly Valve WP12-F-S

The WANVALVE WP12-F-S Pneumatic Flange Butterfly Valve is a high-performance valve designed for demanding flow control systems. Made from duplex steel alloy, it combines the advantages of austenitic and ferritic steel alloy, offering outstanding mechanical properties, corrosion resistance, and stability at high pressure. Its chromium content forms a natural chromium oxide layer that prevents surface corrosion, ensuring longevity in chemical, water, and food processing industries.

Working Principle

The pneumatic actuator operates by converting compressed air into rotational motion, allowing the butterfly valve disc to open or close within seconds. To learn more about the operation and types, visit butterfly valves. This mechanism provides fast response and reliable shut-off, making it ideal for automated control systems. When combined with positioners or solenoid valves, it enables precise flow regulation across complex industrial networks.

Superior Material Composition

Constructed from high-grade types of corrosion-resistant duplex alloy, including duplex and austenitic alloys, this valve ensures exceptional structural integrity. The ductile iron or stainless steel disc enhances torque strength, while PTFE/EPDM seals minimize pressure drops and leakage.
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Pneumatic Actuation and Valve Design

Equipped with a pneumatic valve, the WP12-F-S provides smooth and precise control in both single acting and double acting modes. Its flange butterfly configuration allows for easy installation between ANSI, JIS, DIN, or GB standards, maintaining tight sealing and reducing pressure drops in automated systems.

Technical Specifications

Maintenance and Service Life

Designed for long-term performance, the WP12-F-S features a maintenance-friendly structure with replaceable seats and seals. The duplex stainless steel body and chromium oxide layer significantly extend service life by preventing pitting and scaling. With proper installation and regular cleaning, this valve can maintain peak performance for over ten years in continuous operation.

Quality Standards and Certifications

The WP12-F-S Pneumatic Flange Butterfly Valve is manufactured in accordance with ISO 5211, API 609, and EN 593 standards. Each valve undergoes rigorous testing for leakage, torque, and pressure performance to ensure compliance with international quality requirements. This ensures reliable operation in critical applications such as chemical dosing, water purification, and food-grade systems.

Applications of Pneumatic Flange Butterfly Valve

This valve is ideal for food processing, chemical treatment, marine, and water supply systems. Its duplex stainless steel construction resists chloride corrosion and ensures high performance under high pressure. The combination of austenite and ferrite structures offers strength and toughness unmatched by other grades of metal body construction.

Conclusion

The Valve represents the next generation of high-performance flow control technology. Its duplex steel alloy composition unites the benefits of austenitic, ferritic, and precipitation hardening stainless steels, achieving superior mechanical properties and corrosion resistance.
Enhanced by its protective chromium oxide layer, robust pneumatic actuator, and low pressure drops, this flange valve ensures stable and efficient operation across all industrial environments. For engineers seeking durable, precise, and efficient actuated valves, WANVALVE delivers reliability that meets the highest industry standards.