Stainless steel self-priming pumps not only pay attention to the flow and head when selecting, the caliber is also a parameter that we need to pay attention to, especially when the old pump is replaced with a new pump, if the caliber is not correct, a series of problems will occur during installation. However, if it is simply for the sake of calibre, the flow and head cannot be matched, the same problem will occur. Therefore, when choosing a pump, you must make sure of these parameters.

       Often customers will ask a question, if the head is not enough, reduce the diameter of the outlet pipe, so that the head will become higher? In fact, the main reason he asked this question was because in our daily life, if we squeeze the outlet of the plastic pipe half, the water will spray farther, so inspired by this life common sense, when the head they actually need is not enough At that time, they will think of ways to increase the head by reducing the diameter of the outlet pipe.

       In fact, this method is wrong. The actual head of the stainless steel self-priming pump is equal to the rated head of the pump minus the lost head of the pipeline. Because the rated lift of the stainless steel self-priming pump is certain, because the pump impeller and the structure of the pump determine the rated lift of the pump, and the pump's head loss is mainly due to the friction of the pipeline and the number of elbows, so when your pipeline becomes smaller In the future, the friction of the pipeline will increase, and the head loss of the stainless steel self-priming pump will increase, so the head will definitely not increase.

       At the same time, if the diameter of the pipeline is greatly reduced, and the liquid in the pipeline is too late to transport, it will cause pressure, which will overload the motor and cause the motor to shake and heat up. If it is used for a long time, it will also burn the motor. Case. Therefore, reducing the diameter of the pipeline will not increase the pressure of the lift.

       So if the diameter of the outlet pipe is increased, what is the change in the lift of the stainless steel self-priming pump? If it is only fine-tuning, it will appear that the lift is reduced, but the impact will not be great. If the pipeline changes greatly, the lift will be obvious. It is lowered, and it may cause no pressure. Once the water is not delivered, the motor will be overloaded. Because the motor is running, the pump is working but the liquid cannot be delivered, so the motor will be abnormal.

       In summary, it is not feasible to change the lift of stainless steel centrifugal pumps by changing the diameter of the outlet pipe. If you need to increase the lift, you need to choose a suitable pump. You cannot change the pipeline at will, otherwise problems will occur.