Publish Time: 2023-04-03 Origin: Site
Gate valves compared to other valves, the pressure, temperature, caliber, and other requirements of the applicable range to a wide range. So from the performance, how to choose it? The following describes what are the advantages of gate valve performance as well as compares different structures of gate valves.
Here is the content list:
l Performance advantages of gate valves
l Performance comparison of different structure gate valves
1. Valve fluid resistance is small because the gate valve body is straight type, and the media flow does not change direction, so compare other valve flow resistance to small.
2. The gate valve sealing performance is better than the shut-off valve, opening, and closing are also less effort than the shut-off valve.
3. The gate valve has a wide range of applications, in addition to steam, oil, and other media, but is also suitable for containing granular solids and viscous media, but also suitable for use as a venting valve and low vacuum system valves.
4. The gate valve is a valve with a double flow direction, not limited by the flow direction of the medium, so it is suitable for the pipeline where the medium may change the flow direction, and is also easy to install.
5. The gate valve has a large height and a long opening and closing time. The opening and closing stroke of the gate is large and the lifting is carried out using a screw.
6. The phenomenon of water hammer is not easily generated. The reason is that the gate valve has a long closing time.
7. The shape of the gate valve is simple, the length of the structure is short, the manufacturing process is good, and the scope of application is wide.
1. Wedge type single gate valve
a. The structure of the gate valve is simpler than that of the resilient gate valve.
b. At higher temperatures, the sealing performance of the gate valve is not as good as that of the resilient gate valve or the double gate valve.
2. Resilient gate valve
a. Resilient gate valve is a special form of wedge-type single gate valve. Compared with a wedge-type gate valve, the sealing performance is good at high temperatures and the gate is not easy to be stuck when heated.
b. The gate valve is suitable for steam, high-temperature oil, and oil and gas media, and is suitable for frequent switching parts.
3. Double gate valve
a. Sealing performance is better than wedge gate valve, when the sealing surface of the tilt angle and seat with not very accurate, still has a good sealing performance.
B. The gate sealing surface wear, the spherical top center bottom of the metal pad can be used after replacement, generally do not need to weld and grind the sealing surface.
C. Suitable for steam, high-temperature oil, oil and gas media, and frequent switching parts.
4. Parallel type gate valve
a. Sealing performance is worse than other forms of gate valves.
b. Suitable for media with lower temperature and pressure.
C. The gate and seat sealing surface processing and maintenance of other forms of the gate valve is simple.
There are many options for gate valves, compare the most suitable one based on performance. Our company has a wide range of products, if you want to know more information about gate valves, you can contact us, our website is https://www.luoomaivalve.com/, welcome your arrival and look forward to cooperating with you.