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Lug Butterfly Valve with Ductile Iron and EPDM Rubber DN50-DN600.jpg

China Lug Butterfly Valve Suppliers - Ductile Iron & EPDM Rubber, DN50-DN600, Factory Direct Pricing

Discover our premium lug type butterfly valve, engineered from epoxy-coated ductile iron, ensuring exceptional anti-corrosive properties and robust structural integrity for demanding applications. This valve features an EPDM seat that guarantees a bidirectional bubble-tight shutoff, superior elasticity, and impressive temperature resilience ranging from -10°C to 120°C. The innovative centerline design minimizes torque, while the lug structure allows for simplified single-end mounting. Perfectly suited for HVAC systems, municipal water networks, and light chemical applications, our valve is compliant with API 609 standards. As a trusted supplier and factory in China, we are committed to delivering high-quality products tailored to meet your industrial needs

Product Details

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.

Frequently Asked Questions

What are the primary components of a butterfly valve?

A butterfly valve's core framework consists of a valve casing (one-piece or split-body design), a rotating vane (disc), a central shaft that transmits torque, and an actuation mechanism to regulate flow.

What body and disc materials are available for butterfly valves?

Common materials include Ductile Iron, carbon steel, engineering plastics, and corrosion-resistant alloys. For extreme temperatures or abrasive environments, high-performance materials like titanium or Hastelloy are also used.

What is the difference between elastic and metallic sealing technologies?

Elastic seals (often made of EPDM or PTFE) provide tight closure for low-pressure applications. Metallic seals (such as stainless steel or Inconel) are engineered to withstand high temperatures and pressures through precise contact between the vane and seat.

Which standards do these butterfly valves comply with?

These butterfly valves comply with major international standards including DIN, ANSI, GOST, JIS, and BS, ensuring compatibility across global piping systems.

What operation methods are supported for flow control?

They support a wide range of operations, including manual control (handle or worm gear) and automated systems (electric, hydraulic, or pneumatic drives) for remote monitoring and precise adjustments.

What sizes are available for the Lug type butterfly valve?

The Lug type butterfly valves are available in sizes ranging from DN50 to DN600, suitable for various industrial applications.