Comparison Between Concentric and Double Offset Marine Butterfly Valves

Item	Concentric Butterfly Valve	Double Offset Butterfly Valve
Structure	Disc center aligned with body centerline	Disc center offset from body centerline
Sealing Type	Mainly soft seal	Soft+hard seal available
Operation Torque	Low	Slightly higher
ApplicationPressure	Low to medium pressure(PN6-PN16)	High pressure(PN25-PN40)
Cost	Lower	Higher
Typical Application	General ship pipelines,ballast water systems	High-ressure fire system,deck wash system

 

 

Centerline butterfly valves are more economical and suitable for general marine pipelines, while double offset valves are better for high pressure, high temperature, or special media.

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DNV foundry and products approval. Now we have our own independent R & D, manufacturing, assembly and warehousing workshops; we have professional pre-sale and after-sale technical support and perfect services. Below is our wafer butterfly valve of marine valves,if you need to check more information, please click here:https://www.tanghaivalve.com/wafer-type-butterfly-valve-th-btv-aw/.

Please contact us if you need more support, please contact us freely: info@tanghaivalve.com.