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Lug Butterfly Valve DN50-DN600 | Ductile Iron & PTFE Rubber | China Suppliers & Factory
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?
The core components of a butterfly valve include a valve body, a closure element (rotating vane), a drive shaft, and a sealing assembly. These parts work together to control fluid flow with minimal pressure drop.
How do I choose the right material for a butterfly valve?
Material selection depends on the fluid being handled. For instance, PTFE-lined bodies are ideal for corrosive media, brass alloys are suited for potable water, and high-strength steels or titanium alloys are preferred for high-pressure or demanding industrial systems.
What is the difference between soft-seal and hard-seal designs?
Soft-seal designs utilize elastic polymers to ensure a tight seal at lower pressures. Hard-seal designs use metal-to-metal contact, making them suitable for high-temperature steam or abrasive fluids where durability is critical.
What operational modes are supported by these butterfly valves?
They support various modes of operation, ranging from manual control (lever handles and worm gears) to automated solutions (pneumatic cylinders, electric motors, or hydraulic systems) for remote process integration.
Which industries commonly utilize butterfly valves?
Butterfly valves are widely used in marine engineering (ballast systems), pharmaceuticals (hygiene-grade systems), power generation (cooling water), wastewater treatment, and chemical processing plants.