The check valve is an automatic valve. It relies on the pressure of the flowing medium in the pipeline to push the valve flap to close and open the valve. When the medium stops flowing, the check valve flap closes, which can effectively prevent the medium from flowing back in the pipeline. , which plays a great role in ensuring the safety of the pipeline. The purpose of installing the check valve is to ensure the flow direction of the water inside the pump, so as to ensure the normal operation of the pump. So about the installation position of the check valve, whether it is installed in front of the water pump or behind the water pump, it can be divided into two situations, follow the thread ball check valve For sale editor to briefly understand it!

One is installed at the end of the vertical suction pipe in front of the water pump, also called the bottom valve. The purpose is to fill the water pump once without pumping water, because when there is no water in the water pump and the suction pipe in front of the pump, the water pump can only be idling and cannot pump water, so the water pump needs to be filled with water to pump out water. The installation of this kind of water pump is a method when it is higher than the liquid level, also called the negative pressure method.
The other is installed behind the water pump. This installation method is that when the liquid level is higher than the water pump, it is convenient to start and stop the water pump without closing the water outlet valve of the water pump, especially for the main control water pump system, to prevent backflow.
The above is the thread ball check valve For sale editor's description: a brief introduction to the knowledge of the installation position of the check valve.