The purpose of swing check valve, is swing check valve easy to use?

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Swing check valves have a bushing structure and a gate-like disc that rests freely on the surface of the skewed seat. In order to ensure that the disc can reach the correct part of the die face of the valve seat family every time, the disc is located on the sleeve structure, so that the disc has sufficient space in the swing room, so that the disc can touch the disc in the sense of touching. When the turn check valve is fully opened, the fluid clear gong zhao is slow pressure does not seem to be blocked, so the gas pressure after passing through the gate valve will be very small.

Gate valves can be made of metal, leather goods, plastics, or generative coverings can be placed on top of metal, depending on the available characteristics.

1. Different forms: the lifting check valve is a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself, and is used to prevent the medium from flowing backwards. The opening and closing parts of the swing check valve are opened or closed by the flow and force of the medium to prevent the reverse flow of the medium.

2. Different functions: the function of the lifting check valve is to only allow the medium to flow in one direction, and to prevent the reverse flow. Swing-open check valves prevent backflow of media in the pipeline. The opening and closing parts are valves that open or close by themselves by the flow and force of the medium to prevent the medium from backflowing.

3. Different uses: Swing check valve can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea and other media. Lift check valves are not.

In petrochemical, pharmaceutical, electric power and other pipeline transportation, swing check valves are widely used. In these systems, it is often necessary to convey some oil, steam, nitric acid, and strong oxidizing media. The swing-type check valve is to avoid the backflow of these media through the structure of the internal rocker arm swing-open, and at the same time avoid the outflow of the internal medium.

Let's introduce the working principle of the swing check valve. 

The working principle of swing check valves

Swing check valves, like lift check valves, are used in the transport control of piping systems. However, lift-type check valves can only be used in horizontal pipes, while swing-type check valves can be installed in both horizontal and vertical pipes. However, the working principle of swing check valve and lifting check valve is the same, both of which act through the pressure action generated by the flow of the medium and the pressure of the disc itself, and usually the inlet direction of the internal medium flow can impact the valve disc and rotate to the other side.

The swing-start check valve is mainly composed of four parts: valve body, bonnet, disc and rocker, in addition, there are auxiliary springs and hammer structures to improve the tightness of the pipeline, because in the low-pressure condition, the tightness of the swing-type check valve is not enough.

The metal seat of a swing check valve is often susceptible to wear, and the pressure inside the pipe of the swing check valve will exceed the pressure drop of the disc return valve. Therefore, a damping structure is set on the disc or the disc inside the check valve to avoid the sudden closure of the disc due to the rise and fall of the check valve when the medium flows in the pipeline, so that water hammer is generated in the pipeline and wear is caused to the valve seat.

The swing check valve controls the swing flow in the tubular pie through the internal disc and rocker shaft. The channels within the valve are streamlined, resulting in greater flow resistance. Due to the gravitational force of the disc, the swing-open check valve opens and creates resistance to the flowing medium.

When the swing-off check valve is installed in the vertical pipeline, the internal medium in the pipeline flows from the bottom to the upper level, and if there is an emergency stop, the internal valve will also flow back into the pipeline with the internal medium due to its own gravity, and the internal valve will also automatically close to play a commanding role. When a swing-start check valve is installed in a horizontal pipe, the internal medium in the pipe can also be automatically closed by flowing in a single direction.

In short, as an automatic device, all the internal opening and closing devices act on the inside of the valve and will not penetrate the valve body, so as to avoid the possibility of pipeline liquid leakage, and the valve disc can maintain a certain degree of freedom through the spherical connection structure, which can obtain a longer service life.

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Gas pipeline is a very critical link in chemical engineering, involving the transportation, storage and treatment of gas. In gas pipelines, valves play an extremely important role, not only to control the gas flow, but also to ensure the safe and stable operation of the system.

However, in the field of chemical industry, due to the particularity of the medium and the harsh conditions of the operating environment, the traditional valve often has many problems, such as poor corrosion resistance, serious leakage, easy perforation, difficult maintenance and other problems, which affect the normal operation of the pipeline system. How to solve these problems has become a major problem in this field.

In response to these problems, Janite Valve Group has launched a new H44 swing check valve, which not only has stable sealing performance, but also is more safe and reliable to use. Compared with the traditional valve lifting door, the H44 swing check valve has stronger corrosion resistance, can maintain good operation in any environment, and it can avoid oil leakage inside and outside the medium, so as to better ensure the stability of the system.

In addition, the valve has very good operating performance, which can be easily and intelligently opened, closed and switched in the flow direction, which greatly improves the efficiency of the piping system. At the same time, during use, the valve is easy to repair, and users can easily carry out maintenance and upkeep, thus prolonging its service life.

H44 swing check valve has excellent performance in the transmission of ammonia, gas and other gases in the chemical industry, and has become an indispensable professional pipeline equipment for users in the industry. Jienet Valve Group will continue to strengthen R&D and quality control to provide better products and services for our users.

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 Co., Ltd., 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's worth noting that market and industry developments are changing 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.