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Flanged Butterfly Valve Suppliers: Ductile Iron & PTFE Rubber Factory in China, DN50-DN2400, Durable & Reliable
Product Specification
| Product name | Butterfly valve | Body/Disc Material | Ductile Iron |
| Type | Flanged | Shaft | SS304/SS316 |
| Size | DN50-DN2400 | Seal | PTFE |
| Operation | Handle/Worm gear/Electric/Hydraulic/Peneumatic | Standard | DIN/ANSI/GOST/JIS/BS |
Product Description
Flange-connected butterfly valves stand out as reliable fluid control solutions, distinguished by their flange-integrated structure that ensures secure pipeline attachment. Their core design features a valve body with integral flanges, a rotating disc, a central shaft, and a sealing assembly—all engineered for seamless integration and leak-proof performance. The flanges, drilled with bolt holes, enable direct connection to pipeline flanges via fasteners, eliminating the need for extra adapters and enhancing structural stability.
Material selection is tailored to operational demands: carbon steel bodies suit general industrial use, stainless steel variants resist corrosion for chemical or marine applications, and alloy steel models handle high temperatures in power plants. The disc and sealing components often adopt PTFE or EPDM for soft sealing, while metal-to-metal hard seals cater to high-pressure scenarios, ensuring tight closure even under extreme conditions.
These valves excel in industries requiring robust connections: oil and gas pipelines leverage their pressure resistance, water treatment plants benefit from their easy maintenance, and chemical processing facilities rely on their corrosion resistance. They also find use in HVAC systems and industrial boilers, where flange connections simplify installation and replacement.
Operation modes range from manual handwheels for small-scale setups to pneumatic or electric actuators for large industrial systems. Automated versions enable remote control and precise flow adjustment, reducing downtime and improving operational efficiency in complex pipelines.
Frequently Asked Questions
What are the standard sizes and specifications for these butterfly valves?
These flanged butterfly valves are available in sizes ranging from DN50 to DN2400. They feature a Ductile Iron body and disc, SS304/SS316 shaft, PTFE seal, and conform to international standards including DIN, ANSI, GOST, JIS, and BS.
What are the benefits of a flange-connected butterfly valve design?
The flange-integrated structure allows for a direct, secure connection to pipeline flanges using fasteners. This eliminates the need for extra adapters, enhances structural stability, simplifies installation and replacement, and ensures leak-proof performance.
Which materials are used for different operating conditions?
Carbon steel bodies are used for general industrial applications, stainless steel for corrosive chemical or marine environments, and alloy steel for high-temperature power plant settings. Sealing elements use PTFE or EPDM for soft seals, or metal-to-metal hard seals for high-pressure environments.
What industries commonly utilize these flanged butterfly valves?
These valves are highly utilized in oil and gas pipelines (for pressure resistance), water treatment plants (for easy maintenance), chemical processing facilities (for corrosion resistance), as well as in HVAC systems and industrial boilers.
What operation modes are available for these valves?
They support a wide range of operations including manual handles or worm gears for smaller setups, and pneumatic, electric, or hydraulic actuators for automated, remote flow control in large-scale industrial pipeline systems.