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Stainless Gate Valve What are the advantages and disadvantages of the performance of stainless steel gate valves?

What are the advantages and disadvantages of the performance of stainless steel gate valves? Regarding this question, we need to first understand what stainless steel gate valves are: gate valves are a kind of valves that are widely used in pipelines, mainly for connecting and cutting off the medium. It is not suitable for regulating the flow of the medium, but the flow rate can be judged according to the height of the valve stem (such as the elastic seat seal gate valve for fire protection is equipped with an opening and closing scale). Compared with other valves, gate valves have a wider range of applications for pressure, temperature, caliber, etc.

Now that we have learned about stainless steel gate valves, let's talk about today's question:

I. Main performance advantages of gate valves

1. The valve has low fluid resistance. Since the gate valve body is a straight-through type, the medium flow does not change direction, so the flow resistance is smaller than other valves;

2. The sealing performance is better than the stop valve, and the opening and closing is also more labor-saving than the stop valve;

3. It has a wide range of applications. In addition to being used for media such as steam and oil, it is also suitable for media containing granular solids and high viscosity. It is also suitable for use as a vent valve and a valve for a low vacuum system;

4. The gate valve is a valve with dual flow directions, which is not restricted by the flow direction of the medium. Therefore, it is suitable for pipelines where the medium may change the flow direction, and it is also easy to install.

II. Main performance disadvantages of gate valves

1. The design size is high and the opening and closing time is long. When opening, the valve plate needs to be lifted to the upper part of the valve cavity, and when closing, the valve plate needs to be completely dropped into the valve seat, so the valve plate opening and closing stroke is large and takes a long time;

2. Since the two sealing surfaces of the valve plate and the valve seat of the gate valve are rubbed during the opening and closing process, the sealing surface is easily scratched, which affects the sealing performance and service life, and is not easy to repair.