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China Flanged Butterfly Valve Factory - EPDM Rubber & Ductile Iron, DN50-DN2400, Reliable Suppliers for Fluid Regulation
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 are 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 include 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 primary components of a flange-type butterfly valve?
A flange-type butterfly valve structure typically comprises a flanged valve body, a pivoting closure disc, a transmission shaft, and a specialized sealing system optimized for secure connectivity.
What materials are available for the body and disc?
Common material choices include ductile iron for cost-effective municipal projects, duplex stainless steel for harsh chemical resistance, and titanium alloys for extreme temperature environments.
How do the sealing options differ for low and high-pressure systems?
Elastic polymer seals (like EPDM) are utilized for low-pressure systems, whereas metal seals are deployed for high-temperature steam or abrasive media to ensure long-term sealing integrity.
What operation methods are supported by these butterfly valves?
They support manual operation via a handle or worm gear, as well as automated actuation via electric, hydraulic, or pneumatic systems for remote monitoring and precise flow control.
Which international standards do these valves comply with?
These valves are designed and manufactured to comply with major global standards, including DIN, ANSI, GOST, JIS, and BS.
In what industries are these valves commonly used?
They are widely applied in petrochemical refineries, pharmaceutical plants, municipal water supply networks, marine engineering, and power generation facilities.