A flanged butterfly valve uses a rotating disc to control flow through a pipeline. It is installed between matching pipe flanges with bolted connections. Compared with many linear-motion valves, butterfly valves offer a compact structure, efficient operation, and convenient installation.
SDF manufactures industrial valves for power generation, chemical processing, refining, oil and gas, petrochemical, metallurgy, nuclear energy, natural gas, pharmaceutical, renewable energy, marine, and shipbuilding applications. For projects requiring reliable flange-end installation, this valve type provides a practical balance of shutoff performance, space efficiency, and operational flexibility.
Configurations vary by connection design, sealing structure, service temperature, media characteristics, and automation needs. Common industrial options include double-flanged designs, high performance butterfly valves, soft-seated designs, metal-seated designs, and PTFE-lined butterfly valves where applicable.
These valves are often selected when stable flange-mounted installation is preferred. This is especially important in larger pipe sizes or systems where field alignment and maintenance access matter. Wafer and lug butterfly valves are also common connection styles. Flanged designs use integral body flanges for direct bolting to pipeline flanges.
A double-flanged butterfly valve has integral flanges on both sides of the valve body. It connects directly to pipeline flanges. This configuration is widely used in industrial pipeline systems that require stable installation, convenient maintenance access, and reliable alignment during assembly.
Soft-seated designs are commonly used where tight shutoff is required under moderate service conditions. Metal-seated versions may be selected for higher temperature, abrasive, or more demanding industrial applications. Selection depends on the medium, leakage requirement, operating frequency, and pressure-temperature conditions.
SDF can support manual, gear-operated, pneumatic, electric, and motorized butterfly valve operation according to project requirements. Manual or gear operation may suit local control. Pneumatic and electric actuated designs are used for automation, remote operation, and process control integration.
| Configuration | Typical Use | Key Selection Considerations |
|---|---|---|
| Double-flanged body | Industrial pipelines requiring direct flange-to-flange installation | Pipe flange standard, face-to-face dimension, pressure rating, size |
| Soft-seated design | Water, utilities, general process service, and applications requiring tight shutoff | Seat compatibility, temperature, leakage requirement, operating frequency |
| Metal-seated design | Higher temperature or more severe industrial service where applicable | Temperature, pressure, abrasion, sealing performance, actuator torque |
| PTFE-lined butterfly valve | Corrosive media service where lining is suitable | Chemical compatibility, temperature, pressure, lining suitability |
| High performance butterfly valve | Process systems requiring enhanced sealing and reliability | Design standard, pressure class, shutoff requirement, cycle frequency |
SDF has a broad industrial valve portfolio covering DN10 to DN4000. Our portfolio also covers pressure ranges from 1.6 MPa to 80.0 MPa, Class 150 to Class 4500, and temperatures from -196°C to 1100°C. Exact specifications for this category are confirmed by model, design standard, medium, pressure, temperature, flange connection, and operating requirements.
For industrial butterfly valve projects, common pressure references may include PN10, PN16, PN25, PN40, Class 150, Class 300, and other ratings where technically applicable. Pressure, temperature, and leakage requirements influence the valve body design, disc material, seat structure, shaft design, and actuator selection.
| Specification Item | Available or Project-Selected Options | Selection Notes |
|---|---|---|
| Nominal size | SDF valve portfolio includes DN10 to DN4000 | Final size range depends on the selected model and pipeline requirement |
| Pressure rating | Common references include PN10, PN16, PN25, PN40, Class 150, Class 300, and higher ratings where applicable | Confirm according to design pressure, test pressure, and flange standard |
| Temperature range | SDF valve portfolio covers -196°C to 1100°C | Temperature capability depends on body, seat, seal, and stem materials |
| Connection | Flanged end, double-flanged body | Match project flange standard and face-to-face requirements |
| Operation | Manual, gear-operated, pneumatic, electric, motorized | Select according to valve size, torque, automation level, and control mode |
| Body material | Carbon steel, stainless steel, alloy steel, ductile iron, WCB cast steel, CF8 stainless steel where applicable | Confirm according to medium, pressure, temperature, and corrosion profile |
| Applicable media | Water, steam, gas, oil, chemical media, and process fluids depending on design | Media compatibility must be reviewed before final selection |
Final specifications are confirmed according to project drawings, standards, medium, pressure, and temperature conditions. Buyers are encouraged to send datasheets, pipeline specifications, or drawings for accurate model selection and quotation.
Material selection is one of the most important decisions when specifying a flanged butterfly valve. The correct body, disc, stem, seat, and sealing materials help improve corrosion resistance, temperature resistance, pressure performance, shutoff reliability, and lifecycle value.
SDF manufactures industrial valves using materials such as stainless steel, carbon steel, alloy steel, forged steel, ductile iron, WCB cast steel, CF8 stainless steel, A105 forged steel, and ASTM A182 F92 where applicable. For this category, final material selection should be based on the medium, operating temperature, design pressure, flange standard, and service severity.
Carbon steel and WCB cast steel designs are commonly considered for general industrial service, utility lines, water, oil, gas, steam, and process pipelines. Suitability depends on the working conditions. These materials offer a practical combination of mechanical strength and cost efficiency for many industrial flow control systems.
Stainless steel designs, including CF8 stainless steel options where applicable, are often selected for corrosive media, chemical processing, petrochemical, pharmaceutical, and cleaner service environments. Stainless grades should be selected according to the actual corrosion profile, chloride content, temperature, and process requirements.
The seat and sealing structure affect shutoff performance, operating temperature, chemical resistance, torque, and valve service life. Depending on the application and valve model, resilient seats, PTFE-based sealing, reinforced PTFE designs, or metal sealing structures may be considered. For abrasive, corrosive, high-temperature, high-cycle, or automated service, our engineers can review working conditions and recommend suitable materials.
| Material or Sealing Type | Typical Application Direction | Important Considerations |
|---|---|---|
| Carbon steel | General industrial pipelines, utility systems, oil and gas service where suitable | Corrosion environment and coating or lining requirements |
| WCB cast steel | Industrial process and utility applications requiring cast steel construction | Pressure, temperature, medium compatibility |
| Stainless steel / CF8 | Chemical, petrochemical, pharmaceutical, and corrosive service where suitable | Corrosion profile, temperature, process cleanliness |
| Alloy steel | More demanding temperature or process conditions where specified | Material grade, heat treatment, standards, testing requirements |
| PTFE-lined or PTFE sealing | Corrosive media applications where PTFE compatibility is suitable | Chemical resistance, temperature limit, pressure suitability |
| Metal seat | Higher temperature or severe service applications where applicable | Leakage requirement, torque, abrasion, thermal expansion |
Actuated flanged butterfly valves are used when pipelines require remote operation, automatic shutoff, process control, or frequent cycling. SDF can provide manual, gear-operated, pneumatic, electric, and motorized operation options. Selection is based on valve size, torque, pressure differential, control logic, and site conditions.
Actuator selection should consider the valve diameter, seat type, pressure differential, operating frequency, opening and closing speed, installation environment, power or air supply, and safety requirements. Where required, valve-actuator assemblies may include accessories such as limit switches, solenoid valves, positioners, air filter regulators, and control system interfaces.
| Operation Type | Best-Fit Applications | Buyer Notes |
|---|---|---|
| Manual lever operation | Smaller valves and local open-close control | Simple operation where automation is not required |
| Gear-operated butterfly valve | Larger sizes or valves requiring reduced handwheel effort | Common for large-diameter industrial pipelines |
| Pneumatic flanged butterfly valve | Fast automation, frequent cycling, remote on-off service | Requires air supply and actuator accessory selection |
| Electric flanged butterfly valve | Remote operation and process automation where electric power is preferred | Control signal, voltage, enclosure, and feedback requirements should be confirmed |
| Motorized flanged butterfly valve | Industrial systems requiring powered operation and integration | Confirm torque, control mode, duty cycle, and installation environment |
These valves are used for isolation, throttling, regulation, utility service, cooling water, circulating water, gas pipelines, process media, and auxiliary systems. The selected design determines final suitability. Their compact structure and flange-end installation make them suitable for many industrial systems where reliable flow control and ease of maintenance are important.
SDF serves industries including power generation, chemical processing, coal-to-chemicals, refining, oil and gas, petrochemicals, metallurgy, nuclear energy, natural gas, pharmaceutical, renewable energy projects, marine, and shipbuilding. Our long experience in high-temperature and high-pressure power station valves also supports engineering review for demanding industrial pipeline applications.
In power generation facilities, flange-mounted butterfly valves may be used in auxiliary systems, cooling water, circulating water, and other plant pipeline services. Application depends on pressure, temperature, medium, and shutoff requirements. SDF’s background in power station valve manufacturing provides valuable experience for projects where reliability and technical review are important.
Chemical, petrochemical, refining, and oil and gas systems often require careful review. Key factors include corrosion resistance, sealing performance, fire-safe requirements, pressure rating, and actuator control. Body material, seat structure, leakage requirement, and testing documentation should be confirmed during selection.
Metallurgy, marine, shipbuilding, and general industrial facilities often use large-diameter pipelines for water, gas, utilities, and process support systems. Flange-end butterfly valves provide connection stability and convenient installation for plant environments where space, maintenance, and reliable operation matter.
| Industry | Common Use Direction | Selection Focus |
|---|---|---|
| Power generation | Cooling water, circulating water, auxiliary pipelines | Plant standards, pressure-temperature conditions, reliability |
| Chemical and fine chemicals | Process lines and corrosive media service where suitable | Material compatibility, seat selection, leakage class |
| Oil, gas, refining, petrochemicals | Hydrocarbon and process systems depending on design | Pressure rating, fire-safe requirements, documentation |
| Metallurgy | Industrial water, gas, and process support systems | Large size, durability, installation stability |
| Marine and shipbuilding | Shipboard and marine pipeline systems where specified | Corrosion resistance, compact installation, actuator selection |
SDF integrates R&D, manufacturing, testing, and after-sales service to support industrial valve projects from selection through delivery and operation. For this category, inspection and testing can be arranged according to applicable standards, customer specifications, pressure class, materials, and documentation requirements.
SDF is an early adopter of ISO 9001, ISO 14001, and ISO 45001 triple certification. We also hold China Special Equipment Manufacturing Licenses A1, A2, and B, API 6D, API 607, and CE certifications. These qualifications support SDF’s position as a manufacturer for mission-critical industrial valve applications.
Project standards may define design requirements, flange dimensions, face-to-face dimensions, pressure testing, fire-safe performance, material certificates, inspection reports, and other quality documentation. Our team can review these requirements during quotation and engineering confirmation.
Selecting the right flanged butterfly valve requires more than matching the pipe size. Buyers should confirm the working medium, pressure rating, temperature, shutoff requirement, flange standard, material compatibility, operating method, and installation conditions.
High-temperature, corrosive, abrasive, high-cycle, or automated service may require more detailed engineering review. To receive a precise recommendation, customers can send drawings, datasheets, operating conditions, and control requirements to SDF for technical selection and quotation support.
Complete RFQ information helps SDF recommend the right model, material, actuator, and testing scope. If some details are not yet confirmed, our technical team can help review the application and identify missing parameters.
Flanged, wafer, and lug butterfly valves are all widely used in industrial flow control, but their end connections are different. Flanged designs have integral body flanges for bolted installation. Wafer butterfly valves are clamped between flanges. Lug butterfly valves use threaded or through-hole lugs depending on the design.
| Connection Type | Installation Style | Typical Selection Reason |
|---|---|---|
| Flanged butterfly valve | Bolted directly to matching pipe flanges | Stable flange-mounted installation, large-diameter pipelines, easier alignment |
| Wafer butterfly valve | Clamped between two pipeline flanges | Compact structure and lower weight where suitable |
| Lug butterfly valve | Installed with lug-style body connection | Used where the piping arrangement requires lug connection features |
SDF provides custom design and engineering support for complex industrial valve applications. With more than five decades of manufacturing experience since 1966 and over 2,000 valve models, we can support project-specific requirements for materials, pressure rating, temperature range, actuation, flange standard, testing, and documentation.
As a manufacturer focused on high-temperature and high-pressure power station valves, SDF also provides broader industrial valve solutions. We understand the importance of reliable engineering review and controlled manufacturing. Custom projects can be developed around pipeline conditions, process safety requirements, automation needs, and after-sales service expectations.
Shanghai Power Plant Valve Factory Co., Ltd. is an industrial valve manufacturer and supplier headquartered in Qingpu District, Shanghai, China. Founded in 1966, SDF has developed integrated capabilities covering R&D, manufacturing, testing, and after-sales service for power station valves and industrial valve solutions.
SDF products are used in mission-critical industrial applications and exported to more than 30 countries across Europe, North America, Southeast Asia, the Middle East, and South Asia. The company’s certifications and custom engineering capability help buyers reduce sourcing risk. Our full-cycle support also covers product selection, installation guidance, and after-sales service.
If you are evaluating a flanged butterfly valve manufacturer and supplier for an industrial project, contact SDF for technical consultation, product selection, pricing, and quotation support. Our team can review your size, pressure rating, temperature, medium, material, flange standard, operation type, quantity, and testing or certification requirements.
To speed up the quotation process, please send your drawings, datasheets, pipeline specifications, actuator control requirements, or project standards. We can support your project from selection and manufacturing to installation guidance and global after-sales service.
A flanged butterfly valve is used for flow isolation, regulation, and shutoff in pipelines with flange connections. Our team commonly reviews these valves for water, steam, gas, oil, chemical, power plant, petrochemical, and general industrial systems.
A flanged butterfly valve has integral flanges for bolted connection to pipeline flanges. A wafer butterfly valve is clamped between two pipeline flanges. We often recommend flanged designs when stable installation or large-diameter pipeline alignment is a key concern.
Yes. SDF can provide manual, gear-operated, pneumatic, electric, and motorized butterfly valve options. We select the operating method according to valve size, torque, control requirements, and working conditions.
Common material options include carbon steel, stainless steel, alloy steel, ductile iron, WCB cast steel, and CF8 stainless steel depending on the application and valve model. Our engineers also help select seat and sealing materials according to medium, temperature, pressure, and leakage requirements.
Please provide valve size, pressure rating, working temperature, medium, flange standard, body and seat material, actuator type, quantity, and any testing or certification requirements. Drawings or project datasheets help SDF provide a more accurate selection and quotation.
