Gate valve performance advantages and disadvantages

Gate valve performance advantages

1. The valve fluid resistance is small, because the gate valve body is straight type, medium flow does not change direction, so compared to other valves flow resistance is small;

2. Better sealing performance than the globe valve, opening and closing is also less effort than the globe valve;

3. Wide range of application, in addition to steam, oil and other media, but also suitable for containing granular solid and high viscosity medium, also suitable for vent valve and low vacuum system valve to use; Tianjin gate valves

4. Gate valves are double-flow valves that are not limited by the flow direction of the medium, so they are suitable for pipelines where the medium may change the flow direction and are also easy to install.

Performance defect of gate valve

1. High shape design, long opening and closing time. When opening, it is necessary to lift the valve plate to the upper part of the valve chamber, and when closing, it is necessary to drop all the valve plate into the seat, so the opening and closing stroke of the valve plate is large and the time is long;

2. Due to the friction between the sealing surface of the gate valve plate and the seat during opening and closing, the sealing surface is easy to be scraped, which affects the sealing performance and service life, and is not easy to be maintained.