v型球閥流量特性/系數/曲線

V 型球閥是球閥的一種，它的關閉件是半球體上開有V字型開口. V 型開口具有鋒利的刃口，在球體回轉過程中，關閉件之間有擦拭作用，對介質具有強有力的切斷力，球體的V型開口與閥座流道形成一個扇形區域，在回轉過程中可改變流道裁面積，形成對介質的精確調節，它是一種角回轉的調節閥， 其密封性能與普通球閥相同，使它同時具備調節和開關兩種功能，與氣動或電動執行器配套，廣泛使用于工業過程自控系統中。

The segment ball valve is a kind of ball valve with a hemisphere of V-shaped opening as closing part.V-shaped opening has a sharp edge provides a wiping between the closing parts while rotating,andit has a sharpcutoffto the medium.V-shaped opening portand the valve seatformafan-shaped areato change the port cross area,creating a precision adjustment of medium during rotary.It is a kind of adjusting valve with angle rotation, with the same seal performance as common  ball valve,which  makes  it  have a combination of regulation and on-off functions,equipped with  pneumatic or electric actuators,being widely used in industrial process auto-controlsystem.

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