Description of advantages and disadvantages of gate valves

I. Advantages of gate valves
1. Low fluid resistance.
2. Opening and closing require less external force.
3. The flow direction of media is not limited.
4. When fully open, the erosion of sealing surface by working medium is smaller than that of globe valve.
5. Simple shape and good casting technology.
2. Disadvantages of gate valves
1. The shape size and opening height are larger. The installation space is large.
2. In the process of opening and closing, there is relative friction between the sealing surfaces, which easily causes abrasion.

3. Gate valves generally have two sealing surfaces, which make it difficult to process, grind and maintain.