How gate valves are installed differently than globe valves

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

1. Structural characteristics: the gate valve is relatively simple in shape and has good casting process; The structure of the globe valve is complex.

2. Usage: The external force required for the opening and closing of the gate valve is small, the fluid resistance is small, and the flow direction of the medium is not restricted. When fully opened, the erosion of the sealing surface by the working medium is smaller than that of the shut-off valve; Due to its structural characteristics, the shut-off valve has a large flow resistance, and there is always a very laborious opening and closing process.

3. Tightness: the tightness of the gate valve is poor; The globe valve has the characteristics of good one-way sealing effect, so it can also be used in the occasion of preventing the backflow of working fluids.

4. Functional use:

Gate valve is used in a relatively large system, to close the gate system, gate valve is divided into many kinds such as open rod gate valve, dark rod gate valve, wedge gate valve, single valve gate valve, multi-valve gate valve is the valve body structure is different, large volume. Generally, large and nominal caliber DN50 are mostly used for gate valves, especially in industrial high temperature and high pressure, highly toxic and other occasions.

The globe valve is used in a relatively small system, and plays a role in adjusting the size of the flow rate of the system, can not close the specification stipulates that the gate valve and the globe valve are used in different occasions The globe valve can intercept and adjust the flow rate, covering a small area, small size, generally less than the nominal caliber DN50 occasions with it. Both can be turned off, and the flow can be adjusted in situations where the linearity of the flow is not high.

Where there is a requirement for throttling, use more gate valves. In addition, whether the globe valve is installed in the formal or reverse, there is always a very laborious process in the process of opening and closing, because the chamber can not be done very large, or it is not easy to open and close.

Whether it is a variety of valves often used in production or life, valves such as globe valves, gate valves, butterfly valves, check valves and ball valves are indispensable grip control components in various pipeline systems. People who are new to the chemical equipment industry may be a little confused, ball valves, gate valves, butterfly valves, check valves, these should be used under what circumstances. So, what is the difference between a globe valve and a gate valve?

The difference between globe valve and gate valve.

1. The working principle is different: the globe valve works with a rising valve stem, and the handwheel rotates and rises with the valve stem; The gate valve works by rotating the handwheel of the sedan car, and the valve stem does the upward movement.

2. Different sealing: the sealing surface of the gate valve is a small trapezoidal side, which is sealed by the side of the valve core gate, and the sealing effect is not as good as the globe valve, and the valve core will not be closed when the valve station is closed like the globe valve.

3. Different flow resistance: when the gate valve is fully opened, the whole flow channel is straight, and the pressure loss of the medium is minimal at this time. Compared with globe valves, its main advantage is that the fluid flow resistance is small, the flow resistance coefficient of ordinary gate valves is about, and the resistance coefficient of ordinary globe valves is about.

4. Different installation methods: when the globe valve is installed, the medium can enter from below and above the valve core, and the flow direction of the gate valve has the same effect from below and above. There are no inlet and outlet direction requirements for gate valves, and there are regulations for inlet and outlet of globe valves.