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China Suppliers Factory Lug Butterfly Valve, Ductile Iron & PTFE Rubber DN50-DN600 for Industrial Use
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
QWhat materials are used for these butterfly valves?
The body and disc are constructed from Ductile Iron, with shafts available in SS304/SS316. PTFE is used for the seals to ensure excellent performance. Depending on the fluid application, options range from brass alloys for potable water to high-strength steels or titanium alloys.
QWhat is the size range and standard compliance of the valves?
These butterfly valves are available in sizes ranging from DN50 to DN600. They conform to various international standards, including DIN, ANSI, GOST, JIS, and BS.
QWhat is the difference between soft-seal and hard-seal configurations?
Soft-seal configurations utilize elastic polymers to ensure a tight seal at low pressures. Hard-seal configurations rely on metal-to-metal contact, which is ideal for demanding applications like high-temperature steam or abrasive fluids.
QWhat operational modes are supported?
The valves support multiple operational modes, including manual operation with a handle or worm gear, as well as automated systems powered by electric, hydraulic, or pneumatic actuators for remote control.
QWhich industries commonly use these butterfly valves?
They are widely applied in marine engineering (ballast water systems), pharmaceutical plants (hygiene-grade process fluids), power generation (cooling water regulation), wastewater treatment, and chemical processing.