China Flanged Butterfly Valve Suppliers - Ductile Iron & EPDM Rubber Valve Factory for DN50-DN2400
| 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 |
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.
What are the main 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 optimized for flow control and connection reliability.
What materials are available for the valve body, disc, and shaft?
The body and disc are commonly constructed from Ductile Iron, duplex stainless steel, or titanium alloys. The shaft is typically made of high-grade stainless steel like SS304 or SS316.
What types of seals are used in these butterfly valves?
These valves utilize elastic polymer seals (such as EPDM) for low-pressure systems, and metal seals for high-temperature steam or abrasive media to ensure long-term sealing integrity.
Which operation methods are compatible with flange-type butterfly valves?
They can be operated manually via handle/lever or worm gear, as well as automatically through electric, hydraulic, or pneumatic actuation systems for remote control.
What sizing and connection standards do these valves support?
These valves are available in sizes ranging from DN50 to DN2400 and are manufactured to comply with international standards including DIN, ANSI, GOST, JIS, and BS.