Gate valve advantages and disadvantages

Gate valve advantages

1. The fluid resistance is small, and the sealing surface is less brushed and eroded by the medium.

2, opening and closing is more labor-saving.

3. The flow direction of the medium is not restricted, no disturbance, no pressure reduction.

4. Simple shape, short structure length, good manufacturing process and wide application range.

Gate valve disadvantage

1. Erosion and abrasion are easily caused between the sealing surfaces, and maintenance is difficult.

2. The external dimensions are large, and a certain space is required for opening, and the opening and closing time is long.

3. The structure is more complicated.

According to the sealing surface configuration, the wedge type gate valve and the parallel gate type gate valve can be divided into: single gate type, double gate type and elastic gate type; parallel gate type gate valve 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 gate valve and dark gate valve.