What Factors Can Cause Water Meter Rotation Problems?

I. Factors of pressure fluctuations
Since water is a liquid, its physical properties are generally incompressible. Still, in tap water pipes where the pipe pressure is high, the water will show a certain degree of compressibility. Pressure fluctuations in tap water pipes are inevitable, and all mechanical watches we use rely on the kinetic energy generated by the flow of water in them to drive the gears to rotate, so as to achieve the purpose of measurement. When the water is not used, there is a certain amount of fixed high-pressure water in the connecting pipes at both ends of the water meter. Therefore, when the pressure of the pipe network increases, the volume of tap water in the pipe behind the meter will shrink due to the increase in pressure, and there will be a small amount of water at this time. The forward rotation is generated by the water meter. When the pressure drops, the compressed water in the pipe behind the meter expands due to the pressure drop. There will also be a small amount of water passing through the water meter. The difference is that it is reversed at this time. We all know that the general mechanical watch enters the water from bottom to top, and pushes the gear to rotate forward. When the water meter is inverted, the water enters from the top and comes out from the top. Although the water inflow is the same at both ends, the readings on the water meter are quite different.
II. Tap water dissolves a lot of gas
The amount of rotation water produced by this reason is relatively large because tap water will dissolve a large amount of gas. If the exhaust valve on the pipeline is not set properly, the gas cannot be removed well. In this way, if the home does not use water for a long time or the design is unreasonable, the home will be damaged. At the highest point of the pipe, there will be an airbag. As we all know, the compressibility of gas is very high. If there is a pressure fluctuation on the pipe network at this time, the space in the pipe behind the meter will expand and contract greatly, so the rotation of the water meter will be relatively high. 
III. Other reasons
There are few straight pipe sections left by the water meter, which will also affect the normal measurement of the water meter and cause the water meter to rotate.