优点：
1、流体阻力小
2、开闭所需外力较小
3、介质的流向不受限制
4、全开时，密封面工作介质的冲蚀比截止阀小。 |
Advantages:
1.Small resistance with the fluid.
2.Small force is needed when open and close the
valve.
3.Unlimited direction of flow medium.
4.Resistance between the working medium and the
sealing surface is
smaller than that of stop valve's when the valve is opened
completely. |
