What are the uses of globe valves? What is the difference in the use of globe valves

The opening and closing parts of the stop valve (globe valve) are plug-shaped discs, which are flat or sea cone surfaces on the seal, and the disc moves in a straight line along the center line of the valve seat. The movement form of the valve stem, (common name: dark rod), there are also lifting and rotating rod types, which can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

As a result, this type of shut-off valve valve is ideal for shut-off or regulation and throttling. This type of valve is very suitable for regulating the flow rate because the stem opening or closing stroke is relatively short, and because it has a very reliable shut-off function, and because the change of the seat port is proportional to the stroke of the disc.

See the encyclopedia for details.

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 are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Neway Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing, 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.

Beacon valve professionals will answer for you, gate valve refers to the valve in which the shut-off (ram) moves in the vertical direction along the center line of the channel. Gate valves are mainly used for shut-off in pipelines. Gate valve is a kind of valve that is widely used, the shut-off device with a general diameter of DN 50mm is selected from it, and sometimes the shut-off device with a small diameter is also used as a gate valve, and the gate valve has the following advantages:

Low fluid resistance.

The external force required for opening and closing is small.

There is no restriction on the flow direction of the media.

When fully opened, the erosion of the sealing surface by the working medium is less than that of the shut-off valve.

The body shape is relatively simple, and the casting process is better.

Gate valves are used in relatively large systems to close the gate system; The globe valve is used in a relatively small system, and plays a role in regulating the flow of the system, can not close the specification stipulates that the gate valve and the globe valve are used on different occasions, the 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 can intercept and adjust the flow rate, occupies a small area, is small in size, and is generally used in situations less than the nominal diameter DN50. Both can be turned off, and the flow can be adjusted in situations where the linearity of the flow is not high. It's just that the shut-off valve has a large flow resistance due to its structural characteristics, so the gate valve is used more where there is a requirement for throttling.

In addition, whether the globe valve is installed in the front or reverse, there is always a very laborious opening and closing process, so it cannot be made very large, or it is not easy to open and close. In addition, the globe valve has the characteristics of good one-way sealing effect, so it is also useful in the occasion of preventing the backflow of working fluids.

Hope it helps!

Uses of globe valves:

1. The main function of the globe valve in the pipeline is to cut off or connect the fluid, and the regulating flow of the globe valve is better than that of the gate valve, but the globe valve cannot be used to adjust the pressure and flow rate for a long time, otherwise, the sealing surface of the globe valve may be washed and corroded by the medium, destroying the sealing performance.

2. The globe valve can be used for water, steam, air shrinkage and other pipelines, but it should not be used for medium pipelines with high viscosity, easy coking and easy precipitation, so as not to damage the sealing surface.

The interception and volt check valve is actually a type of valve, which can be installed in the water pipe, and its application range is still very wide, but many people do not have a special understanding of the globe valve, and its role is mainly fully open or full crown is mainly for the effect of cutting off the water source, and with the continuous development and improvement of the current technology, the role of regulation and throttling is also very large.

01 When choosing the globe valve, in fact, the purpose of closing the valve can be achieved in the process of shut-off, so as to achieve the effect of entering the water flow, and the throttling is mainly to achieve the effect of sealing by twisting the valve stem.

02 The main function of the globe valve in the pipeline is that it can be used as a pipeline for water vapor shrinkage. In the process of use, it can not be used in the place where the viscosity is relatively large and easy to adhesion, otherwise it is easy to cause the sealing to be affected to a certain extent.

03 The rice wind part of the globe valve is mainly used to achieve the purpose of closing the globe valve, but when using the globe valve, it can be connected to the valve stem with a movable movement.

04 Generally, the globe valve is used to achieve a good control purpose by using the lifting method, so that the inside of the globe valve can be prevented from being affected when adding materials.

The function of the shut-off valve:

1. The opening and closing parts used in the globe valve are discs in the form of scattered plugs, which are divided into planes and cones on the sealing surface, and the disc moves in a straight line along the center line of the fluid. The movement form of the valve stem has a lifting rod type and a lifting and rotating Tanwu's rod type.

2. The axis of the stem of the globe valve is perpendicular to the sealing surface of the valve seat. The medium flow direction of the globe valve is changed to enter the valve cavity from above the valve disc, at this time, under the action of medium pressure, the force of closing the valve is small, and the force of opening the valve is large, the opening or closing stroke of the valve stem is relatively short, once the globe valve is in the open state, there is no longer contact between its valve seat and the sealing surface of the valve disc, so its sealing surface has less mechanical wear and has a very reliable shut-off action.

3. The function of the globe valve is only fully open and closed, that is, the role of cutting off, but some variants of the globe valve can also achieve the role of adjustment and throttling through some structural changes.

Globe valve function:

It is mainly cut off, and it can also be used to throttle the tomb of repentance. However, the frequent opening and closing of the shut-off valve will cause its cut-off to be not tight, and its cut-off significance will be lost at this time.

Most of the main water valves in the home should be designed as shut-off valves.

The globe valve, also known as the cut-off door, is the most widely used valve, it is widely popular, because the friction between the sealing surfaces in the opening and closing process is small, relatively durable, the opening height is not large, easy to manufacture, easy to maintain, not only suitable for medium and low pressure, but also suitable for high pressure. The closing principle of the globe valve is to rely on the pressure of the valve stem to make the sealing surface of the disc and the sealing surface of the valve seat fit tightly to prevent the flow of medium.

As an extremely important cut-off valve, the globe valve is sealed by applying torque to the valve stem, and the valve stem applies pressure to the valve disc in the axial direction, so that the sealing surface of the valve disc and the sealing surface of the valve seat are closely fitted, and the medium is prevented from leaking along the gap between the sealing surfaces.

The function of the shut-off valve:

1. The main function of the globe valve in the pipeline is to cut off or connect the fluid, and the regulating flow rate of the globe valve is better than that of the gate valve, but the globe valve cannot be used to adjust the pressure and flow rate for a long time, otherwise, the sealing surface of the globe valve may be washed and corroded by the medium, and the sealing performance of the megafiber will be broken.

2. The globe valve can be used for water, Wangchailu steam, constriction air trapping and other pipelines, but it is not suitable for medium pipelines with high viscosity, easy coking and easy precipitation, so as not to damage the sealing surface.

The globe valve, also known as the cut-off valve, is very widely used in life, because its structure is simpler than that of the gate valve, and the manufacturing and maintenance are more convenient than the square buried bridge, which is not easy to wear and abrasion, and has good sealing. Not only for medium and low pressure, but also for high pressure.

What is the function of the globe valve.

The main function of the globe valve is to open or close the water, which refers to the role of cutting off the water source, but with the slow development and improvement of the globe valve, it has now also realized the role of regulation and throttling, cutting off is to control the flow of water entering with the closing valve, and the throttling is to seal by twisting the valve stem, exerting pressure on the valve disc and preventing the medium from entering through the gap.

Advantages and disadvantages of globe valves.

Disadvantages: 1. The fluid resistance is large, and the force required for opening and closing is large.

2. It is not suitable for media with particles, large viscosity and easy coking.

3. Poor adjustment performance.

Merit. 1. Double sealing design (bellows + packing) If the bellows fails, the stem packing will also be avoided;

2. External leakage, and in line with international sealing standards;

3. There is no fluid loss, reducing energy loss and improving the safety of factory equipment;

4. Long service life, reduce the number of maintenance and reduce operating costs;

5. The sturdy and durable bellows sealing design ensures zero leakage of the valve stem and provides maintenance-free conditions.

6. The bellows seal globe valve adopts the design of bellows seal, which completely eliminates the shortcomings of fast aging and easy leakage of ordinary valve stem packing seal, which not only improves the energy efficiency, increases the safety of production equipment, reduces maintenance costs and frequent maintenance, but also provides a clean and safe working environment.

<>1. Cutting effect. The shut-off valve has the effect of shut-off the beam and can control the stupid flow of water slag. 2. The role of throttling.

By applying torque to the valve stem to achieve tightness, it can effectively prevent the leakage of the medium along the gap between the sealing surfaces. Shut-off valves are suitable for use in most media process systems. At present, various forms of globe valves have been developed to meet the various purposes of various sectors such as petrochemical, electric power, and chemical industry.