Whether the flow meter is properly mounted behind the check valve

The flowmeter is not installed correctly behind the check valve, the flowmeter should be installed behind the pump, downstream of the check valve, and the high pressure is conducive to measurement.

If it is a flow meter used for anti-surge calculations, it is placed downstream of the compressor outlet and check valve according to API specifications.

Check valve refers to the valve that automatically opens and closes the valve disc by relying on the flow of the medium itself to prevent the medium from backflowing, also known as check valve, check valve, reverse flow valve, and back pressure valve. The check valve is an automatic valve, and its main function is to prevent the backflow of the medium, prevent the pump and the drive motor from reversing, and the discharge of the container medium.

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.

There is no need to install a check valve behind the electromagnetic flowmeter, the electromagnetic flowmeter can achieve positive and negative two-way measurement, if you actually need to install the valve, please pay attention to the requirements of the straight pipe section, generally the first 5dn (5 times the pipe diameter) distance, and the 3dn straight pipe section after the flowmeter.

The function of the check valve is to prevent the air plug caused by the backflow of water, so the check valve is the water inlet of the water pump, and the pipeline above the check valve must be filled with water for the first use. In order to slowly discharge the air and water below the check valve.

1 All "Why is the flow control valve installed downstream of the flow meter and what is its purpose? If you change the question, you will understand why the flowmeter should be installed upstream of the control valve.

After the fluid passes through the flow control valve, the fluid will change at the back end of the flow control valve, such as swirl, turbulence, etc., which has a great impact on the measurement of the flow meter, so usually the flow meter will be installed at the front of these valve bodies.

In addition, the valve body is fully open, and most valves will also make the straight pipe section at the front end of the flowmeter smaller. Valves have reduced diameters and even curved channels.

Also, I haven't seen a kind of flow meter that is afraid of "a large amount of liquid pouring into the flow meter, causing the flow meter to be damaged." ”