What Is A Butterfly Valve? Advantages and Disadvantages and operation - Ewan Jordan | Water Fittings

Updated: May 7, 2019

A butterfly valve is a quarter-turn valve used to regulate flow. A metal disc in the body of the valve is positioned perpendicular to the flow in the closed position, and rotated one quarter of a turn to be parallel to the flow in the fully opened position. Intermediate rotations allow regulation of liquid flow. They are often used in agricultural and water or wastewater treatment applications and are one of the most common and well-known valve types.


Advantages of a Butterfly Valve


Butterfly valves are similar to ball valves but have several advantages. They are small and, when actuated pneumatically, open and close very quickly. The disc is lighter than a ball, and the valve requires less structural support than a ball valve of comparable diameter. Butterfly valves are very precise, which makes them advantageous in industrial applications.



Disadvantages of a Butterfly Valve

One disadvantage of butterfly valves is that some portion of the disc is always presented to the flow, even when fully opened. The use of a butterfly valve therefore always results in a pressure switch across the valve, regardless of the setting.






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A.1 Jordan is a 100% Jordanian manufacturer Specialized in water fittings industry. We offer a wide range of Gunmetal Ferrules Straps, PP Compression Fittings and all types of valves

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