Why must the quality of the accessories used to install the pipeline centrifugal pump be extremely hard?
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In the above description is a basic knowledge of the pipeline centrifugal pump, then we will need some accessories when installing the pipeline centrifugal pump, such as check valves, globe valves, pressure gauges or control cabinets and so on.
A check valve, also called a bottom valve, is a device that prevents back pouring. To give a simple example: When a pipeline centrifugal pump is installed, if its inlet is high, the pump outlet must be equipped with a fitting. This fitting is a pressure gauge and a check valve. The function of the return valve is to prevent the water in the pipeline from backwatering when the pump stops running. If the quality of the check valve is not excessive (that is, the quality is not good), then pouring the pump body into the pump can cause the pump to break.
When a pipeline centrifugal pump is used as a self-priming pump, a check valve is more necessary. At this time, we generally call it a bottom valve. At this time, the working condition is that the water inlet of the pump is below, that is, the pipeline centrifugal pump is required to suck water. Come up. In fact, we all know that the pipeline pump has no suction stroke, but we only need to add a bottom valve or it can be used as a self-priming pump, but this will reduce the pump head. If the quality of the bottom valve is not enough at this time, the water inside the inlet pipe will leak into the pool. When the pump is started, no water in the pipe will cause the impeller to dry. This will damage the pump seal and even destroy the impeller. The motor may be burned.
Author: Yong Jia Liangbang pump manufacturers 
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