Press release
Understanding The Difference Between Single and Double Flange Butterfly Valves
1. Structural Design
A double flange butterfly valve has two full flanges, one on each side of the valve body.This structure offers excellent alignment and stability.
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Bolts directly to both pipeline flanges
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Valve becomes a fixed part of the pipeline
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Provides strong mechanical support
A single flange butterfly valve has one flange, usually on one side, while the other side connects differently.This design saves space and reduces weight.
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One flanged connection
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The opposite side may be wafer-type or spigot-style
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Lighter and more compact
2. Installation Method
Double Flange:Installed using bolts on both sides.Requires more installation space.Easy to align during mounting.The valve can handle higher tightening forces.
Single Flange:Installed with fewer bolts.Faster to install.Limited axial support.Alignment accuracy depends more on pipeline conditions.
Image: https://www.iflowmarinevalves.com/uploads/d-flange-butterfly-valve.png
3. Pressure and Strength CapabilityDouble Flange Butterfly Valve
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Better suited for medium to high pressure systems
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Strong resistance to pipe movement and vibration
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Suitable for larger pipe diameters
Single Flange Butterfly Valve
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Generally used in low to medium pressure systems
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Less resistant to mechanical stress
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Best for smaller or less critical pipelines
4. Sealing Performance
Double flange valves:More uniform gasket compression.Better long-term sealing reliability
Single flange valves:Depend more on installation accuracy.May experience uneven sealing under stress
5. Maintenance and ReplacementDouble Flange
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Easy to remove as an independent pipeline section
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Suitable for systems requiring frequent maintenance
Single Flange
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Removal may affect pipe alignment
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Better for systems with limited maintenance needs
Image: https://www.iflowmarinevalves.com/uploads/s-flange-butterfly-valve.png
6. Typical ApplicationsDouble Flange Butterfly Valves
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Marine pipelines
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Water treatment plants
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Power stations
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Large-diameter industrial systems
Single Flange Butterfly Valves
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HVAC systems
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Compact piping layouts
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Light industrial applications
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Cost-sensitive projects
Media Contact
Company Name: Qingdao I- Flow Co., Ltd.
Email:Send Email [https://www.abnewswire.com/email_contact_us.php?pr=understanding-the-difference-between-single-and-double-flange-butterfly-valves]
Address:Unit 1517-1520, Building 4, Excellence Century Center, No. 31 Longcheng Road
City: Qingdao
Country: China
Website: https://www.iflowmarinevalves.com/
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