The head of the fire pump: the height difference between the water pump suction surface and the water pump outlet, often referred to as the "total head".
The potential difference from the water pump suction surface to the pump impeller is called "suction head". The head we usually refer to usually refers to the height difference from the impeller of the fire pump to the height of the water sent out.
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There are three factors that affect the head of the fire pump:
1. The head of the fire pump has a certain relationship with the water output of the pump and the size of the water inlet and outlet pipes. The larger the water output, the higher the head;
2. The smaller the outlet pipe, the higher the head. The suction port of the water pump is generally not smaller than the water outlet of the water pump. The inlet pipe of the water pump should be configured according to the manual of the pump, and should not be smaller than the standard size of the manual of the pump.
3. The water output of the fire pump is related to the speed of the pump and the displacement of the impeller. When the rotation speed and the displacement of the impeller are the same, the smaller the size of the water outlet, the higher the lift.
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