How much pressure is suitable for the micro impedance slow closing butterfly check valve

The diameter of the butterfly check valve is different, the general national standard specification of the micro resistance slow closing butterfly check valve can be suitable for the pressure of 10 kg to 16 kg, for the pressure of the pipeline with micro resistance slow closure butterfly check valve pressure can reach 25 kg, generally need to be customized. The pressure is high, and the required parameters for the entire valve body will also be different.

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.

The working principle of the micro-impedance slow-closing check valve.

The working principle of the micro-resistance slow-closing check valve is to rely on the flow rate and head of the medium at the nozzle of Yansun, and the valve disc will automatically open to let the medium pass. Pressurized water in the valve body flows through the microvalve into the rear chamber of the piston assembly, pushing the piston out of the piston chamber. When the water flow stops (or the pump suddenly stops running), the disc closes automatically due to the dead weight of the disc and the action of the water backflow.

However, because the piston is in the push-out position, it is pressed against the disc, so that the disc cannot close all the valve ports and the remaining 20% of the opening allows the water to pass through, so the water hammer pressure is weakened. When the valve disc is pressed on the end of the piston, due to the generation of reaction force, the water in the rear cavity of the piston prevents the piston from exiting, and also prevents the valve disc from closing.

The disc is divided into two steps, fast and slow, to prevent reversal and reduce water hammer. The length of the piston extension determines the degree of pure auspicious opening of the disc slow closing. The slow closing opening is large, the water hammer is small, and the closing time is extended; Conversely, the opening is small, which can produce destructive water hammer.

Therefore, this product adopts a slow closing opening adjuster in the structure, that is, the length of the piston extension is controlled by a tie rod. In order to meet the requirements of the slow closing time of various systems, the valve is equipped with a micro regulating valve, which can accurately control the flow of compressed water in the rear cavity of the piston according to the length of time when the peak water hammer arrives, that is, the slow closing time of the control valve disc.

Precautions for the installation of the micro-resistance slow-closing check valve.

1. Do not make the check valve bear the weight in the pipeline, and the large check valve should be supported independently so that it is not affected by the pressure generated by the pipeline.

2. During installation, pay attention to the direction of the medium flow should be consistent with the direction of the arrow voted by the valve body.

3. The lifting vertical flap check valve should be installed on the vertical pipeline.

4. The lifting horizontal flap check valve should be installed on the horizontal pipeline.

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Which check valve has the least resistance Answer: PVC spherical check valve is better to use. 1. Low resistance.

The flow rate is large, the resistance is small, the rolling is light, and the water is not blocked. 2. Good stability. Because the sewage contains a lot of impurities, in the process of long-term use, even if the spherical surface is worn, it is uniform, and will always maintain high shape, precision, sealing effect and other properties.

3. Self-cleaning. The unique self-cleaning effect can effectively clean the channel and sealing surface in the rolling process, and the balance thus has the function of cleaning the sealing surface. 4. Anti-vibration.

Since the ball core is made of rubber-coated hollow iron balls, the check valve has a certain elasticity during use, which can play the role of vibration damping and vibration reduction. 5. Small loss. The ball check body has no connecting body and is configured to open and close freely with no shaft wear.

6. Strong adaptability. It can be evenly rolled during the passage of any fluid, and is especially suitable for industrial and domestic sewage discharge pipes containing suspended solids. 7. Long life.

When the check valve is closed, the silencer is closed, no water hammer, better protection of the sealing surface, and longer service life; Effectively prevent pipe and valve plate noise when the equipment is closed. 8. Seal well. The sealing surface is relatively narrow, and the sealing effect will be better if the sealing pressure is relatively large; Plate check valves are slightly inferior to most spherical check valves, although they are cheaper, but they are not durable.

Therefore, the spherical check valve is the best choice for the pump configuration, and it is also the best configuration among the various pump configurations, there is no one. It can effectively ensure the use effect and service life of the water pump.