阀门工作状态 Working status of pinchvalve
全开：管夹阀的全通径弹性阀套无任何缝隙和死角。
Fully-open: thefull-bore elastic valve sleeve of pinch valve without any gaps &dead spots.
关闭中：中线关闭，这一特征避免了套管内的紊流和磨损，阀套成为一个平滑的封闭的文氏管，每次操作都能自清洗。
Center closed:closed on the center line of the valve body, which avoidsturbulence and abrasion, as a result, the valve sleeve becomes asmooth and enclosed venturi with self-cleaning during everyoperation.
关闭：管夹阀在全关时确保双向零泄漏关闭，采用无密封件需要维护的内在安全
设计。
Fully-closed: itensures the pinch valve is with no leakage of two ways when shutoff, and the safe design of inner valve sleeve requires nomaintenance of sealing elements.
