Selection of self priming pump

1. Strict procedures should be followed to purchase water pumps.
When selecting a water pump, it is necessary to verify it, and only with complete three certificates can we avoid purchasing outdated and inferior products.
2. Choose self priming pumps according to local conditions
3. Select water pumps that exceed the standard appropriately.
After determining the type of water pump, its economic performance should be considered, with special attention paid to the selection of the pump's head, flow rate, and supporting power. It must be noted that there is a difference between the head (total head) indicated on the water pump label and the outlet head (actual head) during use, as there is a certain resistance loss when the water flows through the water delivery pipe and the vicinity of the pipeline. So, the actual head is generally 10% to 20% lower than the total head, and the water output also decreases accordingly.
Therefore, in actual use, it can only be estimated based on 80% to 90% of the head and flow rate indicated on the label. The selection of matching power for the water pump can be based on the power indicated on the label. In order to make the water pump start quickly and use safely, the power of the power machine can also be slightly higher than the required power of the water pump, generally about 10% higher; If there is already power, when purchasing a water pump, you can choose a matching water pump according to the power of the power machine.