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

China Ductile Iron Lug Butterfly Valve DN50-DN600 - Reliable Suppliers & Factory for Industrial Applications

Introducing our high-performance lug type butterfly valve, expertly crafted from ductile iron for superior tensile strength and impact resistance, making it ideal for demanding industrial applications. This China-manufactured valve features PTFE seating, ensuring a bubble-tight closure that effectively withstands aggressive media while maintaining operational stability in temperature ranges from -20°C to 190°C. Perfect for sectors such as water distribution, chemical processing, and petrochemical systems, our valve guarantees minimal flow restriction and simplifies maintenance tasks. Compliant with ANSI/ASME B16.5 standards, this product from a trusted factory in China is designed for easy single-end installation and promises long-term reliability, making it a top choice among suppliers in the industry

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

Q: What is the main application of a Lug type Butterfly Valve?

Lug type butterfly valves are widely used across diverse industries including marine engineering for ballast systems, pharmaceutical plants for process fluids, power generation for cooling water regulation, as well as wastewater treatment and chemical processing.

Q: What materials are available for the body, disc, and shaft?

The standard body and disc material is Ductile Iron. For the shaft, high-grade SS304 and SS316 stainless steels are used to ensure durability and resistance to wear and corrosion.

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

Soft-seal configurations utilize elastic polymers (like PTFE) to create a tight, leak-proof seal at lower pressures. Hard-seal configurations employ metal-to-metal contact, which is ideal for handling high-temperature steam or abrasive fluids.

Q: What operational modes can be integrated with these butterfly valves?

They support manual operation using lever handles or worm gears, as well as automated systems powered by pneumatic cylinders, hydraulic actuators, or electric motors for integration with remote control systems.

Q: Which international standards do these valves conform to?

Our butterfly valves are designed and manufactured to comply with major global standards, including DIN, ANSI, GOST, JIS, and BS, ensuring compatibility with various piping systems worldwide.