There are many kinds of self-priming pump, but no matter what kind of self-priming pump needs to exhaust, the commonly used self-priming pump exhaust method has the following:
1. Install another closed water inlet at the water inlet pipe, inject water at the water inlet, and let the gas be discharged from the water outlet.
2. Place the water inlet and water inlet pipe of the self-priming pump in the scene where the level is higher than that of the self-priming pump, so as long as the water inlet valve is opened, the water will naturally enter the pump body, which is also the method of self-priming pump exhaust.