Double Flanged Butterfly Valves for Reliable Flow Control
FMV Valve Automation is a trusted double flanged butterfly valve manufacturer, dealer and supplier in Mumbai, serving customers across India. Our double flanged butterfly valves are a double-flanged body that bolts directly to pipe flanges in large water and process lines. They are designed and tested as per API 609, BS EN 593, AWWA C504. We supply 2" to 80" in PN 10 to PN 25, Class 150, with double flanged ends, in materials such as CI, DI, WCB, CF8M with EPDM, NBR seats. They are widely used in water treatment plants, pumping stations, desalination and power plants. Share your line size, pressure class and media with our team to receive a technical offer and quote.
About Our Double Flanged Butterfly Valves
A Double Flanged Butterfly Valve is a quarter-turn rotary valve featuring flanged connections at both ends of the valve body. This arrangement allows the valve to be bolted directly between matching pipeline flanges for a stable mechanical connection.
The valve controls flow through a rotating disc mounted on a shaft. Rotating the disc through approximately 90 degrees moves the valve between open and closed positions, while intermediate positions can be used for flow regulation where the valve design and service conditions permit.
Engineered for Reliable Industrial Flow Management
The double-flanged configuration combines secure pipeline connection with simple quarter-turn valve operation.
Double Flanged Construction
Flanges on both ends provide a rigid connection arrangement for compatible flanged pipelines.
Quarter-Turn Operation
The disc rotates through approximately 90 degrees between open and closed positions.
Compact Valve Design
The butterfly valve principle provides a relatively compact flow-control arrangement compared with many linear-motion valves.
Reliable Flow Isolation
Disc rotation into the closed position interrupts the flow passage through the pipeline.
Flow Regulation
Intermediate disc positions can provide flow regulation when appropriate for the selected valve design and service.
Multiple Operating Options
Depending on project requirements, butterfly valves can be arranged for manual, gearbox or actuator-based operation.
How a Double Flanged Butterfly Valve Works
The valve operates through rotary movement of a circular disc inside the pipeline. The stem or shaft transfers operating torque to the disc.
Open Position
The disc is positioned approximately parallel to the direction of flow, providing an open flow passage.
Disc Rotation
The operator, gearbox or actuator rotates the valve stem and connected disc.
Flow Regulation
Intermediate disc positions alter the available flow area and can regulate flow when suitable for the application.
Closed Position
The disc rotates toward a position perpendicular to the pipeline flow path, restricting and stopping flow.
Secure Flanged Connection with Rotary Disc Control
The defining feature of this valve is the double-flanged body configuration. Both ends of the valve incorporate flanged connection surfaces that mate with corresponding pipeline flanges.
Inside the body, the disc rotates around its shaft to control the flow passage. The final valve construction, sealing arrangement and material selection should be specified according to the process conditions.
Flanged Body Arrangement
Both valve ends provide flange connections for a secure pipeline installation.
Rotating Disc
The disc is the primary flow-control element and rotates around the valve shaft.
Shaft & Stem
Transfers operating torque from the manual or automated operating mechanism to the disc.
Sealing System
The seat and sealing arrangement are selected according to the intended fluid, temperature and operating conditions.
Benefits of Double Flanged Butterfly Valves
Their flanged connection and quarter-turn mechanism make them practical for many industrial pipeline applications.
Stable Pipeline Connection
Double flanged construction provides a secure connection between the valve and adjoining pipeline flanges.
Quick Quarter-Turn Operation
Rotary operation allows the valve to move between open and closed positions with a relatively simple operating movement.
Space-Efficient Arrangement
Butterfly valve construction can provide a compact alternative to many conventional linear-motion valve designs.
Easy Integration
The valve can be considered for manual or automated systems depending on the required operating arrangement.
Suitable for Large Pipelines
Flanged butterfly valve designs are commonly used in larger industrial and utility pipeline systems.
Versatile Industrial Use
Appropriate configurations can be selected for water, utility, process and other compatible fluid services.
Industrial Applications
Double Flanged Butterfly Valves are used across a wide range of industrial and utility piping systems.
Water Treatment
Wastewater Treatment
Water Distribution
Power Generation
Chemical Processing
Petrochemical Plants
Oil & Gas
HVAC & Utilities
General Process Industries
Main Components
The exact construction can vary according to the selected valve design and application. Typical components include:
Double Flanged Butterfly Valve Selection Guide
- Pipeline nominal size and connection dimensions
- Operating pressure and temperature
- Process fluid and chemical compatibility
- Required flow rate and pressure drop
- Seat and sealing material compatibility
- Body, disc and shaft material requirements
- Manual, gearbox or automated operation
- Required shut-off performance
- Installation and maintenance requirements
Manual & Automated Valve Operation
The operating mechanism can be selected according to the required frequency of operation, torque requirements and plant automation strategy.
Manual Operation
Manual operation is suitable for applications where the valve is operated directly by plant personnel and frequent remote operation is not required.
Gear Operated
Gear-operated arrangements can assist with operation where additional mechanical advantage is required for larger valves or higher operating torque.
Actuated Operation
Suitable actuator arrangements can enable remote or automated operation and integration with industrial control systems.
Double Flanged vs Wafer Butterfly Valves
The primary difference is the pipeline connection arrangement.
| Feature | Double Flanged Butterfly Valve | Wafer Butterfly Valve |
|---|---|---|
| Connection | Flanged ends on both sides | Installed between pipeline flanges |
| Installation | Direct flange-to-flange connection | Compact between two pipeline flanges |
| Body Arrangement | Integral flanged body | Wafer-style body |
| Operation | Quarter-turn rotary operation | Quarter-turn rotary operation |
| Typical Focus | Secure flanged pipeline connection | Compact installation |
Double Flanged Butterfly Valve Solutions by FMV
FMV Valve Automation focuses on industrial valve solutions for flow isolation, regulation and process piping applications.
Industrial Valve Expertise
Product solutions are positioned around practical industrial flow-control and pipeline requirements.
Application-Based Selection
Valve selection can be aligned with process media, pressure, temperature and operating requirements.
Manual & Automated Solutions
Valve operation can be considered for manual, gearbox or actuator-based applications depending on project needs.
Industrial Process Focus
FMV supports valve requirements across process plants, utilities and industrial pipeline systems.
Double Flanged Butterfly Valve FAQs
What is a Double Flanged Butterfly Valve?
A Double Flanged Butterfly Valve is a quarter-turn rotary valve with flanged connections at both ends of the valve body. It is installed between compatible flanged pipelines and uses a rotating disc to control flow.
How does a Double Flanged Butterfly Valve work?
The valve controls flow by rotating a circular disc around a shaft. The disc is approximately parallel to the flow path when open and rotates toward a perpendicular position to restrict or stop flow.
What is the main advantage of double flanged construction?
Double flanged construction provides a rigid flange-to-flange connection between the valve and adjoining pipeline sections, making it suitable for many industrial and utility systems.
Can a Double Flanged Butterfly Valve regulate flow?
Butterfly valves can be used for flow regulation in suitable applications by positioning the disc at an intermediate angle. The suitability depends on the valve design and process conditions.
Can Double Flanged Butterfly Valves be automated?
Yes. Depending on the application, suitable actuators can be integrated for automated or remote operation.
Where are Double Flanged Butterfly Valves used?
Common applications include water treatment, wastewater, water distribution, power generation, chemical processing, petrochemical plants, oil and gas, HVAC and general industrial process systems.
How should a Double Flanged Butterfly Valve be selected?
Selection should consider pipeline size, flange arrangement, operating pressure and temperature, process medium, sealing materials, flow requirements and the required operating method.
Need the Right Double Flanged Butterfly Valve?
Share your pipeline and process requirements with FMV Valve Automation for a suitable valve solution.