Through experiment, achieved the relation of the flux and the opening degree of the SPF balance valve, protracted the ideal flow characteristic curve.

通过实验，得到了SPF型平衡阀的流量与开度间的关系，绘制了理想流量特性曲线。

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The flow to open design is adopted, and the medium flow direction tends to the opening direction of the valve with good controllability of small opening and low flow characteristic distortion.

采用流开式设计，介质趋向于阀门开启的方向，小开度可控性好，流量特性畸变小。

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