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China Flanged Butterfly Valve Suppliers - Ductile Iron & PTFE Rubber, DN50-DN2400 Factory Direct Quality
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 main advantages of flange-connected butterfly valves?
Flange-connected butterfly valves feature an integrated flange structure that allows direct connection to pipeline flanges using fasteners. This eliminates the need for extra adapters, ensures secure attachment, and enhances overall structural stability and leak-proof performance.
What materials are available for the body and sealing components?
The valve bodies are available in Ductile Iron, carbon steel for general industrial use, stainless steel (SS304/SS316) for corrosion resistance, and alloy steel for high-temperature applications. Sealing options include PTFE or EPDM for soft sealing, as well as metal-to-metal hard seals for high-pressure environments.
What size range and standards do these butterfly valves support?
These valves are available in sizes ranging from DN50 to DN2400. They are designed to meet major international standards including DIN, ANSI, GOST, JIS, and BS.
Which industries benefit most from using these valves?
They are widely used in oil and gas pipelines (for pressure resistance), water treatment plants (for easy maintenance), chemical processing plants (for corrosion resistance), as well as HVAC systems and industrial boilers where easy installation and replacement are critical.
What operation options are available for these butterfly valves?
Depending on your system requirements, the valves can be operated manually via a handle or worm gear, or automated using electric, hydraulic, or pneumatic actuators for remote control and precise flow adjustment.