China Ductile Iron Lug Butterfly Valve DN50-DN600 - EPDM Rubber, Corrosion-Resistant, API 609, Factory Suppliers
Product Specification
| Product Name | Butterfly Valve | Body/Disc Material | Ductile Iron |
| Type | Lug | Shaft | SS304/SS316 |
| Size | DN50-DN600 | Seal | EPDM |
| Operation | Handle/Worm gear/Electric/Hydraulic/Peneumatic | Standard | DIN/ANSI/GOST/JIS/BS |
Product Description
Butterfly valves stand as pivotal fluid control devices in modern industrial systems, defined by a streamlined structure that balances functionality and simplicity. Their core framework comprises a valve casing, rotating vane, central shaft, and actuation mechanism—components engineered to work in tandem for smooth flow regulation. The casing, typically a one-piece or split-body design, houses the vane, which rotates 90 degrees to open or close the passage, while the shaft transmits torque from the actuator to the vane.
Material selection for butterfly valves is tailored to media characteristics and operating conditions. Common options include corrosion-resistant alloys for harsh chemicals, engineering plastics for low-pressure water systems, and carbon steel for general industrial use. High-performance models may adopt titanium or Hastelloy for extreme temperatures or abrasive media, ensuring structural integrity over prolonged use.
Sealing technology is a critical feature, with two primary configurations: elastic sealing elements and metallic sealing surfaces. Elastic seals, often made of EPDM or PTFE, deliver tight closure for low-pressure applications, while metallic seals—such as stainless steel or Inconel—withstand high temperatures and pressure, preventing leakage via precise contact between the vane and valve seat.
These valves find widespread use across sectors: municipal water treatment relies on their cost-effectiveness, petrochemical plants utilize them for medium-pressure fluid handling, and HVAC systems benefit from their compact size. They also serve in food and beverage production, where hygiene-grade materials ensure compliance with safety standards.
Operation methods vary from manual control via handwheels for small-scale setups to pneumatic or electrically powered drives for large industrial systems. Automated actuation enables remote monitoring and precise flow adjustment, reducing human intervention and enhancing operational efficiency—key for processes requiring consistent performance.
