Concentric Flanged Butterfly Valves Made in Tianjin China
Concentric flanged butterfly valves with bolted flange ends for pipeline integration, designed for medium- and low-pressure service in industrial water, power, chemical and heating systems.
Concentric Flanged Butterfly Valves Available From Stock Drawings
Model codes as they appear on our production drawings. Sizes and pressure ratings for each code are confirmed on quotation.
DF9A001 Concentric Flange Butterfly Valve Electric Actuator with Hand Wheel
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DF3C003 Concentric Flange Butterfly Valve Epoxy Coated Disc and Half Shaft
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DF3C002 Concentric Flange Butterfly Valve Epoxy Coated Disc and Wormgear
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DF3B001 Concentric Flange Butterfly Valve Nylon Coated Disc and Gearbox
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DF3A005 Concentric Flange Butterfly Valve Al-Bronze Disc and Wormgear
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DF3A004 Concentric Flange Butterfly Valve Pin Type and Wormgear
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DF3A003 Concentric Flange Butterfly Valve Pin Type and Bare Shaft
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DF3A002 Concentric Flange Butterfly Valve Pin Type and Gearbox
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DF3A001 Concentric Flange Butterfly Valve Wormgear and PN10 PN16
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DFA004 Concentric Flange Butterfly Valve Hand Lever PN16
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DFA001 Concentric Flange Butterfly Valve Hand Lever and JIS 10K
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DF9A002 Concentric Flange Butterfly Valve Electric Actuator DN1200
View SpecificationBuyers This Category Suits
- Water and wastewater utilities installing or replacing valves in municipal pipelines
- Power plant engineers specifying isolation valves for auxiliary systems and cooling loops
- Chemical and petrochemical plants needing corrosion-resistant valves for process lines
- Marine and shipyard builders integrating valves into piping systems with strict space limits
- HVAC and district heating contractors standardising on a single valve type across multiple projects
What It Fixes on the Line
- Existing flanged connections require valves with matching flange standards and bolt patterns
- Space constraints in retrofit projects limit the use of longer valves like gate valves
- Disc-to-stem connections degrade under repeated cycling, leading to leakage and misalignment
- Mixed valve brands across a system result in inconsistent spare parts and maintenance delays
- Large diameter valves often require custom sourcing with long lead times and higher costs
Why Engineers Specify This Family
Advantage
Flanged ends match standard pipe flanges, enabling direct bolted installation without welding
Advantage
Concentric disc design ensures low torque and smooth operation, even at low pressure
Advantage
Multiple disc coatings and stem types (pin, half-shaft, epoxy, nylon, al-bronze) allow media-specific selection
Advantage
Wormgear, gearbox, and handwheel options provide manual control for remote or emergency operation
Advantage
Electric actuators can be factory-fitted and tested for automated control integration
Advantage
Full range from DN10 to DN2600 allows one supplier to cover all diameters in a project
Where These Valves Are Installed
- Isolating water supply lines in municipal pumping stations with existing flanged pipe connections
- Controlling flow in power plant auxiliary cooling circuits where space is limited
- Managing chemical transfer lines in petrochemical plants requiring corrosion-resistant materials
- Regulating steam and hot water in district heating networks with flanged piping
- Controlling process water in pharmaceutical facilities where cleanability and low leakage are critical
Industries and Guides for This Family
Power Generation
Cooling water circulating water and auxiliary system isolation for power station pipework.
Heat Supply
District heating primary and secondary circuit isolation balancing and expansion.
Preventing Seat Leakage in Butterfly Valves
Where butterfly valve seats actually fail and what to change in specification or installation.
Concentric Flanged Butterfly Valves FAQ
What flange standards do these valves follow?
Flange dimensions and bolt patterns are confirmed on request based on your project specifications.
Can the disc be coated for aggressive media?
Yes. Options include epoxy, nylon, and al-bronze coatings. Send the medium details and operating temperature for confirmation.
What actuation options are available?
Manual handwheels, wormgear, gearboxes, and electric actuators are available. All are tested before shipment.
Are the valves available in large diameters?
Yes. The concentric flanged butterfly valve series covers DN10 to DN2600. Exact size and pressure rating per model are confirmed on request.
What certifications does the factory hold?
Tianjin MIC Valve Co., Ltd. holds ISO 9001 quality management and ISO 14001 environmental management certification. Test records are issued on request.
Can I order mixed models in one shipment?
Yes. Butterfly valves, gate valves, check valves, and strainers from the same family can be combined in one container.
Quote Concentric Flanged Butterfly Valves for Your Project
Send the sizes, quantities and flange standard on your line list. Our engineers reply with a model-by-model quotation and a confirmed specification sheet.