How to make the self-priming pump flow head work stably

July 17, 2023

Self-priming stabilization method

1. The bottom valve is installed in the suction port of the suction pipe of the self-priming pump, and the bottom valve cannot be sucked up normally. It is recommended to use a suitable bottom valve.

2. Since the inlet pipe is too long to exceed the self-priming capacity of the self-priming pump, if the pipe in which the inlet pipe is submerged in the water is more than 1 m, it is recommended to shorten the length of the pipe in the water to reduce the self-priming distance.

3, the self-priming pump has not sucked up the water, so there is no water at the end of the outlet pipe. Some users understand the situation as the reason that the head of the self-priming pump can not reach, so the ball valve and pressure gauge should be installed at the outlet of the self-priming pump. The pressure gauge should be installed between the pump outlet and the ball valve to facilitate observation of the outlet pressure and determine if the water is sucked up.

4. Self-priming pump selection error The actual working condition is too high, and the head of the self-priming pump can not meet the actual working conditions. The solution that the self-priming pump head can not reach can only replace the high-lift self-priming pump.

5. The liquid to be transported contains debris particles. Because the pipeline or the pump body is blocked, the lift of the self-priming pump is not reached. It is recommended to use a self-priming sewage pump to transport the sewage.

6. The liquid conveyed is corrosive. The impeller of the self-priming pump encounters severe corrosion. It is recommended to use corrosion-resistant self-priming pump products such as stainless steel self-priming pump or fluoroplastic self-priming pump, or self-priming pump impeller after long time. It is recommended to replace the new self-priming pump impeller with the gap between the worn impeller and the pump cover being too large for the lift of the self-priming pump.

7. The self-priming pump head purchased by the user is wrong with the self-matching motor. For example, the actual motor needs 2900r/min and the user is equipped with 1450r/min motor.

Flow stabilization method:

For the first time, the self-priming pump must be filled with the pump body as the irrigation water. It is normal for the suction pipe to be absolutely sealed and the flow is unstable because it is stable after the exhaust air is exhausted.

Self-priming pump use sequence

1 Import fully open, close the outlet valve

2 Fill up the irrigation water (pay attention to monitoring after the first use)

3 Start the pump. Open the valve to a size of 1/3. Wait for the pump to drain the air (see the status of the pump to determine if the air is vented)

4 The outlet valve is fully open. Normal use

5 Is the liquid water or mud? In the case of mud, the flow head will decrease. The flow head of the pump calibration is true for clean water. Too sticky media has a large impact.

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