Disadvantages of American standard gate valve

1. It is easy to cause erosion and wear between sealing surfaces, and it is difficult to maintain.

2. The overall size is large, which requires a certain opening space and a long opening and closing time.

3. The structure is complex.

The types of gate width can be divided into wedge gate valve and parallel gate valve according to the configuration of sealing surface, and wedge gate valve can be divided into single gate, double gate plate and elastic gate valve. Parallel gate valves can be divided into single gate type and double gate type. According to the thread position of the valve stem, it can be divided into two types: open stem gate valve and hidden stem gate valve.