Which of the self-priming pump or the submersible pump has high efficiency, which of the self-priming pump and the submersible pump has a long life, and which of the self-priming pump and the submersible pump is durable?

First, Overview of self-priming pumps and submersible pumps
Since the two products of self-priming pump and submersible pump can be substituted for each other (the condition for the self-priming pump to replace the submersible pump must be within the effective self-priming height range of the self-priming pump), so many users decide which pump to use is better I am more entangled and want to search the Internet about which self-priming pump and submersible pump has a long life, or which is durable, self-priming pump and submersible pump, which is more efficient, the difference between self-priming pump and submersible pump, self-priming pump and Which submersible pump has a higher pressure, self-priming pump or submersible pump, which has a higher flow rate, and so on. In fact, the two questions about which pressure is higher for self-priming pump and submersible pump, and which flow rate is higher for self-priming pump and submersible pump are relatively general. It depends on which type of self-priming pump and submersible pump you choose, and the question about which pressure is higher between self-priming pump and submersible pump: self-priming pumps are single-stage impellers, and submersible pumps have multi-stage submersible pumps than pressure self-priming pumps. It is definitely not better than the submersible pump, self-priming pump or submersible pump which has a large flow rate: if you choose products with the same caliber and the same power, the flow rates of the two pumps will be similar. In addition, both self-priming pumps and submersible pumps can be used as large flow pumps. For products, there is no such thing as a self-priming pump or a submersible pump which has a higher flow rate.

Second, which is the most efficient self-priming pump or submersible pump?
The efficiency of self-priming pumps and submersible pumps depends first on the product of the impeller structure. Since the submersible pump is directly placed in the pool, the product with the same impeller structure is relatively more efficient. The submersible pump is divided into a variety of submersible pumps. Pumps include clean water submersible pumps and sewage submersible pumps. The impellers of clean water submersible pumps are all closed impellers, while the sewage submersible pump impellers are semi-closed, semi-open or open impellers. The efficiency of submersible pumps using these types of impellers The efficiency is lower than that of the clean water submersible pump. The standard model 50WQ15-15-1.5KW for a submersible sewage pump model describes that the flow head is 15 meters and the motor power is 1.5KW, but the efficiency of this series of sewage submersible pumps is relatively low. The flow head cannot be synchronized to reach the data. For example, when the actual use head needs 15 meters, the flow cannot reach 15m3/h, and the flow can only reach 15m3/h when the head is about 10 meters. So here I remind you to choose When the sewage submersible pump is selected according to the data in the parameter table, the corresponding data must be reached. It is recommended to select the model corresponding to the larger level.
All self-priming pump products need to pump low-level water into the pump cavity, and then pressurize and transport it to farther places. The higher the suction lift of the self-priming pump, the higher the head loss, so self-priming The pump is the same as the sewage submersible pump. When selecting the type, consider the self-priming height loss in actual use. When selecting the self-priming pump head, the self-priming height loss of the self-priming pump should be included. A self-priming pump with a head of 10 meters is required, so it is recommended that you choose a self-priming pump with a head of 15 meters when selecting the model.

Third, which of the self-priming pump or submersible pump has a long life, and which of the self-priming pump and submersible pump is durable
The submersible pump works by submerging into the water, while the self-priming pump works on the ground. The submersible pump's entire body is submerged in the water. After a long time, the motor will enter water due to damage to the mechanical seal, damage to the O-ring and other parts. Or it will cause the motor to burn out when it is damp or severe.
The self-priming pump is installed on the ground. When the mechanical seal is damaged, there will only be water leakage. The operator can observe at any time. The main components that are in contact with the liquid are the pump cavity, the impeller and the shaft. Therefore, the self-priming pump and the submersible The question of which pump has a long life and which is durable, self-priming pump and submersible pump, is definitely that the self-priming pump has a longer life and is more durable. Since the self-priming pump is installed on the ground, the operator can understand the operation status of the self-priming pump at any time by listening to the sound, observing and checking, and the maintenance is also convenient. The submersible pump must also be lifted to the shore for the self-priming pump. When conditions permit within the range of the process, we recommend choosing a self-priming pump.