1、小型轻便，容易拆装及维修，并可在任意位置安装。
2、结构简单，紧凑，90°回转启闭迅速。
3、操作扭矩小，省力轻巧。
4、流量特性趋于直线，调节性能好。
5、启闭实验次数多达数万次，寿命长。
6、达到完全密封，气体实验泄漏为零。
7、选择不同零部件材质，可适用多种介质。
1.Small in size and light in weight.Easy instllation and mintenance.It can be mounted wherever nedded.
2.Siple and compact construction，quick 90° degrees on-off operation.
3.Miniminzed operating torque，energy saving
4.Flow curve tending to straight line.Excellent regulation performance.
5.Long service life. Standing the test of tens of thousands opening，closing operations.
6.Bubbles-tight sealing with no leakage under the pressure test.
7.Wide selection of materials，applicable for various mdeium.