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China Flanged Butterfly Valve Factory - Durable Ductile Iron & EPDM Rubber, Suppliers of DN50-DN2400 for Fluid Control
Product Specification
| Product name | Butterfly valve | Body/Disc Material | Ductile Iron |
| Type | Flanged | Shaft | SS304/SS316 |
| Size | DN50-DN2400 | Seal | EPDM |
| Operation | Handle/Worm gear/Electric/Hydraulic/Peneumatic | Standard | DIN/ANSI/GOST/JIS/BS |
Product Description
Flange-type butterfly valves emerge as indispensable fluid control devices, characterized by their flange-mounted design that delivers exceptional connectivity and reliability. Their structure comprises a flanged valve body, a pivoting closure disc, a transmission shaft, and a specialized sealing system—optimized to balance flow control efficiency and installation convenience. The integrated flanges align with pipeline flanges, secured by bolts to create a rigid, leak-tight joint that withstands high pressure and vibration.
Material Choices: Guided by application needs: ductile iron bodies offer cost-effectiveness for municipal projects, duplex stainless steel resists harsh chemicals in industrial processes, and titanium alloys suit extreme temperature environments.
Sealing Solutions: Includes elastic polymer seals for low-pressure systems and metal seals for high-temperature steam or abrasive media, ensuring long-term sealing integrity.
These valves are widely applied across sectors: petrochemical refineries use them for medium-to-high pressure fluid transfer, pharmaceutical plants deploy hygiene-grade variants for process fluids, and municipal water supply systems leverage their easy installation. They also serve in marine engineering and power generation facilities, adapting to diverse media and operational conditions.
Operational methods vary from manual lever operation for small valves to automated actuation via pneumatic cylinders or electric motors. Automated systems enable integration with control networks, facilitating remote monitoring and precise flow tuning—critical for large-scale facilities aiming to optimize process control and minimize maintenance costs.
Frequently Asked Questions
What are the core components of a flange-type butterfly valve?
A flange-type butterfly valve consists of a flanged valve body, a pivoting closure disc, a transmission shaft, and a specialized sealing system. This design ensures exceptional connectivity and leak-tight reliability.
What materials are recommended for different application environments?
Ductile iron bodies are highly cost-effective for municipal projects. Duplex stainless steel is ideal for resisting harsh chemicals in industrial processes, while titanium alloys are suited for extreme temperature environments.
How do I choose between elastic polymer and metal seals?
Elastic polymer seals (such as EPDM) are best for low-pressure systems requiring tight shut-off, whereas metal seals are designed for high-temperature steam or handling abrasive media to ensure long-term sealing integrity.
In what industries are these flanged butterfly valves commonly deployed?
They are widely applied in petrochemical refineries, pharmaceutical plants (hygiene-grade), municipal water supply systems, marine engineering, and power generation facilities due to their adaptability and easy installation.
What are the options for operating these butterfly valves?
Operation options range from manual handle levers and worm gears for smaller setups, to automated systems utilizing pneumatic cylinders, hydraulic systems, or electric motors for remote monitoring and precise flow control.