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China Lug Butterfly Valve Suppliers - Ductile Iron & PTFE Rubber DN50-DN600 from Reliable 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 materials are available for the Butterfly Valve body and disc?
The standard body and disc material is Ductile Iron. Material choices are guided by the handled fluid, including PTFE-lined bodies for corrosive media, brass alloys for potable water systems, and high-strength steels or titanium alloys for high-pressure industrial, offshore, or aerospace fluid systems.
What is the difference between soft-seal and hard-seal configurations?
Soft-seal configurations use elastic polymers (such as PTFE) to create a tight seal at low pressures. Hard-seal options employ metal-to-metal contact, which makes them suitable for high-temperature steam or abrasive fluids.
What sizes and standards do these Butterfly Valves support?
These valves are available in sizes ranging from DN50 to DN600. They conform to various international standards including DIN, ANSI, GOST, JIS, and BS.
What operational modes can be used with these valves?
Operational modes range from manual operation (using handle levers or worm gears) to automated configurations powered by pneumatic cylinders, hydraulic actuators, or electric motors.
In which industries are these Butterfly Valves commonly applied?
They are widely used across multiple industries, including marine engineering (ballast water systems), pharmaceutical plants (hygiene-grade process fluids), power generation (cooling water regulation), wastewater treatment, and chemical processing.