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0102030405

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

China Suppliers Factory DN50-DN600 Lug Butterfly Valve with Ductile Iron & PTFE - Durable & Reliable Industrial Solution

Introducing our high-quality lug type butterfly valve, expertly crafted from ductile iron for unmatched tensile strength and impact resistance, making it ideal for the most demanding industrial environments. This valve features a PTFE seating that guarantees a bubble-tight seal, effectively resisting aggressive media while maintaining stability in temperatures ranging from -20°C to 190°C, Designed for effortless single-end installation, this valve minimizes flow restriction and allows for straightforward maintenance, making it the perfect choice for water distribution, chemical plants, and petrochemical systems. As a reliable supplier from China, our factory ensures that this product meets ANSI/ASME B16.5 standards, promising dependable performance and longevity in your operations. Choose our butterfly valve for a combination of durability and efficiency that meets 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	PTFE
Operation	Handle/Worm gear/Electric/Hydraulic/Peneumatic	Standard	DIN/ANSI/GOST/JIS/BS

Product Description

Butterfly valves emerge as indispensable tools for fluid regulation, distinguished by a robust yet minimalist design that adapts to diverse operational demands. Their core components include a valve body, closure element (rotating vane), drive shaft, and sealing assembly—each optimized to deliver reliable flow control with minimal pressure drop. The valve body, often cast or forged, provides structural support, while the vane rotates around the shaft to modulate flow, offering quick on-off or throttling capabilities.

Material choices are guided by the fluid being handled: PTFE-lined bodies excel with corrosive media, brass alloys suit potable water systems, and high-strength steels cater to high-pressure industrial applications. Advanced models may integrate composite materials or titanium alloys to balance durability and weight, ideal for offshore or aerospace fluid systems.

Sealing performance is achieved through two main approaches: soft-seal and hard-seal designs. Soft-seal configurations use elastic polymers to create a tight seal at low pressures, while hard-seal options employ metal-to-metal contact, suitable for high-temperature steam or abrasive fluids. Both designs prioritize leak prevention, ensuring system efficiency and safety.

Butterfly valves are applied across a broad spectrum of industries: marine engineering uses them for ballast water systems, pharmaceutical plants deploy hygiene-grade variants for process fluids, and power generation facilities rely on them for cooling water regulation. Their versatility also extends to wastewater treatment and chemical processing, where adaptability to varying media and pressures is essential.

Operational modes range from manual operation with lever handles for small valves to automated systems powered by pneumatic cylinders or electric motors. These automated solutions enable integration with control systems, allowing for precise flow tuning and remote operation—critical for large-scale facilities seeking to optimize process control and reduce downtime.

Frequently Asked Questions

What are the main components of a butterfly valve?

A butterfly valve consists of a valve body, a closure element (rotating vane), a drive shaft, and a sealing assembly. These components work together to regulate or shut off the fluid flow efficiently.

How do I choose the right material for a butterfly valve?

Material selection depends on the fluid type: PTFE-lined bodies are ideal for corrosive media, brass alloys are suitable for potable water, and high-strength steels or titanium alloys are preferred for high-pressure and industrial applications.

What is the difference between soft-seal and hard-seal configurations?

Soft-seal configurations utilize elastic polymers to ensure a tight seal at lower pressures. Hard-seal configurations use metal-to-metal contact, making them highly suitable for high-temperature steam or abrasive fluids.

What industries commonly use butterfly valves?

They are widely used in marine engineering (ballast water), pharmaceutical plants (hygiene-grade processes), power generation (cooling water), wastewater treatment, and chemical processing systems.

What operational modes are available for these valves?

Butterfly valves can be operated manually using handles or worm gears, or automated via pneumatic cylinders, hydraulic systems, and electric motors for remote integration and precise process control.